CBSE class 12 chemical sample paper 2023 and solutions (2023)

Class 12 chemical sample paper 2023

Chemical class 12 sample paper 2023: CBSE has published the chemical -testing paper 2023 of class 12 together with solution and marking scheme. Now the students have to attract themselves in order to start their revision for the chemical test, and the loosening of the chemistry sample paper in class 12 could be the best wayBeing to increase yourself and improve your trust for the actual examination. Look for the sample paper in class 12 chemistry 2023 for your chemical test according to the new CBSE test pattern? Then you are in the right place, as we have provided this hereCBSE class 12 chemical sample paperThis is issued by the CBSE on its official website according to the latest examination pattern.

Chemical sample paper class 122023

The Central Board of Secondary Education has also published the design and marking system for examining class 12 Chemistry Board 2023.In the exam, five sections are divided with 35 questions for 70 points.The complete examination pattern that was followed is as follows.

1st section A consists of 18 questions, each mark 1 [Multiple -Choice questions].

2. Section B consists of 7 questions, each of which bears 2 points [very short answer questions].

3rd section C consists of 5 questions, each of which bears 3 markings [short answer questions].

4. Section D consists of 2 questions, each of which has 4 markings [case -based questions].

5th section E consists of 2 questions that bear 5 points each [long answer questions].

Chemical class 12 sample paper 2023 PDF

The students who carry out their revision for the upcoming CBSE class 12 chemistry test must download the official sample paper PDF together with its solution from the following link. With this CBSE sample paper of the chemical class 12 it would be easier for the studentsTypes of questions to try the CBSE in the Board exam 2023 should be asked and analyze your experiment with the solution provided by CBSE.The link for the same is given below.

CBSE class 12 chemicals paper 2023- PDF download

CBSE class 12 chemical sample paper solution

CBSE class 12 chemical sample paper and solution 2023

Chemistry is one of the main subjects of class 12. Boards.It consists of a total of 100 points that continue to include 70 points for theory and 30 points for the practical test.In the following you will find the sample question from the official paper. Extra do you thoroughly to achieve good grades in chemistry, since chemistry is seen as one of the evaluation subjects in the board's exams.

Section A

The following questions are multiple-choice questions with a correct answer.

Question 1. The main product of the acid-catalyzed dehydration of 1-methylcyclohexanol is:





Solution:B.1-methylcycloHexen. After the rule of Saytzeff, d.H. The high -substituted alken is the main product. A dehydrate reaction takes place, an alken is formed due to the removal of a water molecule.

Question 2. Which of the following connections reacted to the SN1 reaction?



c.C6H5CH (C6H5) BR


Solution:c.C6H5CH (C6H5) BR

C6H5CH (C6H5)+ carbocation is more stable.

Question 3. KMNO4 is colored because:

A.D-D transitions

B. Ligand transfer transfer to metal

C.unge paarte electrons in the D orbital of MN

D. Charging transfer from Metall to Ligand

Solution:B. Ligand of Ligand to Metall The MN -Atom in KMNO4 has an oxidation state of +7 with electron configuration [AR] 3D 04S0, since there are no unpaired electrons, D -D transitions are not possible. The molecule should therefore be colorless.His intensive purple through L → M (Ligand to Metal) charge transfer 2P (L) from O to 3D (m) of MN.

Question 5.The molar conductivity of CH3COOH with infinite dilution is 390 SCM²/mol. Using the diagram and the given information, the molar conductivity of CH3COOK is:

a.100 scm²/mol

b.115 scm²/mol

c.150 scm²/ mol

d.125 scm²/mol

Solution:b.115 scm² /mol λOCH3COOK = λO CH3COOH +λOKCL - λOHCL = 390 +150-425 = 115 scm² /mol

Question 6. For the reaction A +2b - AB2, the order W.R.T.Reaktant A is 2 and W.R.T.Reaktant B. How is the reaction speed changed if the concentration of A doubles and B halved?

A. is four times

B. takes four times

C. climbed twice

D. not change

Solution:A. is about 4 times the rate = [a] ², if [a] doubled, rate = [2a] ² = 4 [a] ² = 4 rate

Question 7. Arrange the following in the increasing order of your boiling points: A: Butanamin, B: N, N-Dimethylethanamin, C: N-Etthylethanaminamine

a.C <b <a

b.A <b <c

c.A <c <b

d.B <c <a

Solution:D.B <c < primary amin, the intermolecular association is maximum due to the H bond, while it is minimal in the tertiary.

Question 8. The Kfste of [Cocl6] 3- IS 18000 cm-1 The CFSE for [Cocl4]- will be:

a.18000 cm-1

b.8000 cm-1

c.2000 cm-1

d.16000 cm-1

Solution:b.8000 cm-1 ∆t = (4/9) x 18000cm-1 = 8000 cm-1

Question 9. What would be the main product of the following reaction?

C6H5 -CH2 -OC6H5 + HBR = A + B

a.A = C6H5CH2OH, B = C6H6

b.A = C6H5CH2OH, B = C6H5BR

c.A = C6H5CH3, B = C6H5BR

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d.A = C6H5CH2BR, B = C6H5OH

Solution:d.A. = C6H5CH2BR, B = C6H5OH, C6H5CH2OC6H5 H+ C6H5CH2OC6H5

Question 10. Which of the following statements is not correct for Amine?

A.The alkylamine are more fundamental than ammonia solution.

B.Der PKB value of ethylamine is lower than benzylamine.

C.CH3NH2 in response with laughing disease releases NO2 gas.

D.hinsberg's reagentzs reacts to sulfonamids with secondary amines.

Solution:C.CH3NH2 In response with laughing disease, NO2 Gas false statement releases. The development of nitrogen gas takes place.

Question 11. Which of the following tests/ reactions are given by both aldehydes and ketones?

a.Fehings Test

b.Great’s test

c.2,4 DNP -Test

D.Cannizaro -Anaktion

Solution:C.4 DNP test Fehlings, Tollens and Cannizzaro's reactions are only shown by alcohol.

Question12. The equation of Arrhenius can be shown graphically as follows:

The (i) intercept and (ii) slope of the graphic are:

a.(I) ln a (ii) Luft / r

B. (i) and (ii) air

c. (I) LN or (II) - air / r

d. (i) and (ii) -ea

Solution:12. C. (I) LN A (Ii) - air / r

Frage13.13. The number of ions that are formed when a molecule of FESO4 is dissolved.(NH4) 2S4.6H2O in water is:





Solution:13. C.5 1FE2 +, 2 SO4 2 and 2 NH4 + ions

Question14.The oxidation from Toluol to benzaldehyde by chromyl chloride is mentioned

A.etard reaction

b.Riemer-Tiemann Reaction

C.Stephen's reaction

D.Cannizzaro's reaction

Solution:A. Etard's reaction

Frage15.Below are two statements called "Association (A) and Reason (R).

Assertion (a):An ether is more fleeting than alcohol with a comparable molecular flash mass.

Basic (R):Ether are polar nature.

Select the most suitable answer from the options below:

A.Sowohl A and R are true and r is the correct explanation of A

B.Sowohl A and R are true, but R is not the right explanation of A.

C.A is true, but R is wrong.

D.A is wrong, but r is true.

Solution:B both a and R are true, but R is not the correct explanation of A and R and R are two different statements about ether.The right reason for this is that hydrogen binding does not exist between ether molecules

Question16. The following are given two statements called "Association (A) and Reason (R).

Assertion (a):It is found that proteins have two different types of secondary structures, namely the alpha-helix and beta-pace sheet structure.

Basic (R):The secondary structure of proteins is stabilized by hydrogen bond.

Select the most suitable answer from the options below:

A.Sowohl A and R are true and r is the correct explanation of A

B.Sowohl A and R are true, but R is not the right explanation of A.

C.A is true, but R is wrong.

D.A is wrong, but r is true.

Solution:B both a and r are true, but r is not the correct explanation of A.

Question17. The following are given two statements called "Association (A) and Reason (R).

Claim:Magnetic moment values of actinids are less than the theoretically predicted values.

Reason:Actinide elements are very paramagnetic.

Select the most suitable answer from the options below:

A.Sowohl A and R are true and r is the correct explanation of A

B.Sowohl A and R are true, but R is not the right explanation of A.

C.A is true, but R is wrong.

D.A is wrong, but r is true.

Solution:B both a and r are true, but R is not the correct explanation of A. The magnetic moment is lower, since the 5f electrons of actinids are less effective, which leads to deleting orbital contributions.Due to the presence of unpaid, they are strongly paramagnetic electrons

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Question18. The following are given two statements called "Association (A) and Reason (R).

Assertion (a):Tertiary amines are more fundamental than the corresponding secondary and primary amine in a gaseous state.

Basic (R):Tertiary amines have three alkyl groups that cause the +I effect.

Select the most suitable answer from the options below:

A.Sowohl A and R are true and r is the correct explanation of A

B.Sowohl A and R are true, but R is not the right explanation of A.

C.A is true, but R is wrong.

D.A is wrong, but r is true.

Solution:Both a and r are true and r is the correct explanation of A.

Section B

This section contains 7 questions with internal selection in two questions. The following questions are very short response types and each bear 2 markings.

Question 19. A first order reaction takes 69.3 min for 50%. How is the time required for 80% of the reaction to be completed? (Given: Log 5 = 0.6990, log 8 = 0,9030, log 2 = 0.3010)

Solution:19.HALF-LIFE T1 /2 = 0.693 /K

K = 0.693/69.3 = 1/100 = 0.01 min - - 1

For the first order reaction

𝑘 = 2,303/ 𝑡 𝑙𝑜𝑔 [𝑅𝑜]/ [𝑅]

𝑡 = 2.303 /0.01 𝑙𝑜𝑔 100/20

𝑡 = 230,3 log 5 (log 5 = 0,6990)

t = 160,9 min

Question 20.Conent for the following:

A.Ses gives 5 oh groups in glucose

B. glucose is a reducing sugar

Solution:A.The acetylation of glucose with acetic acid anhydride results in glucosententa acetate that confirms the presence of five OH groups.


Question 20. What happens when D - glucose is treated with the following reagents



Question 21. Enter a reason for the following:

A. During the electrophilic substitution reaction of haloarens, the para-substituted derivative is the main product.

B.Das formed during SN 1 reaction is a racemic mix. the Ortho position is a higher steric obstacle, so Para isomer is usually predominant and is preserved in the main amount.

B. SN 1 -mechanism is hybridized with the formed medium carbocation of SP2 and planar in nature. This enables the attack of nucleophils from both sides of the level, which leads to a racemic mix.


Question 21. Enter a reason for the following:

A.nine the appropriate alcohol and the suitable reagent from which 2-chlorine 2-methylpropan can be made.

B. Welches from chlormethane and fluorethane have a higher dipol moment and why?

Solution:A.tter butyl alcohol or 2-methyl-propane-2-ol using Lucas-Ragenz, a mixture of conc.hcl and ZNCL2 The reaction follows SN 1 path.

B.Chlorethan has a higher dipol moment. Beyond the smaller fluorus size, the dipole moment of flouromethane is comparatively lower.

Question22.The Formula CO (NH3) 5co3Cl could represent a carbonate or chloride. Write the structures and names of possible isomers.

Solution:[CO (NH3) 5Co3] CL and [CO (NH3) 5Cl] CO3

Pentaamminecarbonatocobalt (iii) Chloride

Pentaamminechlorocobalt (III) Carbonate

Question 23. Corrosion is an electrochemical phenomenon. The oxygen in moist air reacts as follows:

O2 (G) + 2h2o (L) + 4E - → 4oh - (AQ).

Write the possible reactions for the corrosion of zinc, which occur at anode, cathode and overall reaction to form a white layer of zinc hydroxide.

Solution:Anode: Zn (s) → Zn2 + (aq) + 2 e--

Kathode: O2 (G) + 2h2o (L) + 4E - → 4oh- (AQ).

In total: 2 ZN (s) + O2 (g) + 2H2O (L) → 2 ZN2 + (AQ) + 4OH- (AQ)

2 Zn (s) + O2 (g) + 2H2O (l) → 2 Zn (OH) 2 (PPT)

Question24. Explain how and why the reaction speed for a certain reaction is influenced if

A. A catalyst is added

B. the temperature in which the reaction took place is reduced

Solution:The reaction speed increases. The catalytic converter reduces the activation energy of the reaction, which is why the reaction becomes faster. (1/2+1/2) B.which leads to a reduction in the reaction speed.

Question 25. Write the reaction and IUPAC names of the product that was formed when 2-methylpropanal (isobutyraldhyde) is treated with ethyl magnesium bromide, followed by hydrolysis.


Section C

This section contains 5 questions with internal selection in two questions. The following questions are short response types and each bear 3 markings.

Question26. Write the equations for the following reaction:

A.Salicylic acid is treated with acetic acid anhydride in the presence of Conc.h2so4

B.tert butyl chloride is treated with sodium method.

C.Phenol is treated in the presence of Naoh with chloroform

Solution:(i) Aspirin is formed

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(iii) o-hydroxybetzaldehyde is formed

Question27. Explain the following in relation to the paramagnetic complex [mn) 6] 3- of hybridization

B. magnetic moment of the complex - inner, outer orbital complex

Solution:[Von (be) i] p = [r] 3D54S2 Mn3+ = [R] 3D4 mn (Grend STAT)

Type of hybridization - D2SP3

Magnetic moment - √n (N+2) = √ (2 (2+2)) = 2.87 BM (n = No. No. of unpaired electrons)

Type of complex - inner orbital

Question 28. Answer the following questions:

A.State Henry's law and explain why the tanks used by divers with a helium (11.7% helium, 56.2% nitrogen and 32.1% oxygen) explain.

B. long, argon exercises a partial pressure of 6 bar. You calculate the solubility of Argongas in water. (In view of the Henry's law, constant for Argon, which was dissolved in water, KH = 40 kbar)

Solution:A.Henry's law: The partial pressure of the gas in the steam phase (P) is proportional to the mola content of the gas (x) in the solution. The pressure under water is high so that the solubility of gases in the blood increases.The surface comes, the pressure decreases, as well as the solubility, which causes nitrogen bubbles in the blood to avoid this situation and maintain the same sub -pressure of the nitrogen under water, the dilution is diluted.

B.P = KH x molan break from Argon in water x = p/ k = 6/40 x 103 = 1.5 x 10-4

Question 29. Enter reasons for 3 of the following observations:

A.Anilin is acetylated before the nitration reaction.

B. PKB from Anilin is lower than the M-Nitroanilin.

C. The primary amin when treating benzene sulfonyl chloride forms a product that is soluble in NAOH.Secondary Amin, however, offers a product that is insoluble in Naoh.

D.Anilin does not react with methyl chloride in the presence of an anhydrous ALCL3 catalyst.

Solution:(Any 3)

A.Anilin is acetylated before the nitration reaction to avoid the formation of Terry oxidation products and protect the Amino group so that P -Nitro derivative can be preserved as the main product.

B. PKB from Anilin is lower than the M-Nitro-Anilin.The basic strength of anilin is more than M -Nitroanilin. The PKB value is the reverse to the basic strength. The presence of an electron withdrawal group reduces the basic strength.

C. The existence of the presence of acid hydrogen in the N-alkylbene scenesulphonamide, which is formed by the treatment of primary amines. (1)

D.anilin does not react with methyl chloride in the presence of an ALCL3 catalyst, since Anilin is a base and alcl3 Lewis -acid is that leads to the formation of salt.

Question 30identify the main product that is formed when 2-cycloHexylchlorethandergo is a dehydrohalogenation reaction.

B. WHARUM Haloalkanes react to nucleophilic substitution reactions as haloarene and vinyl -containing halogenids?

solution: A.The main product that was formed when 2-cycloHexyl chlorethanethan experiences a dehydrohalogenation reaction, 1 cyclohexyethen.

B.haloalkanes are more reactive than haloarene and vinylic halogenids, since there is a partial double binding character-C-X bond in haloarens and vinylhalogenidides.


A.nine the possible alken, the 1-chlor 1 methylcycloHexan in your reaction with HCL, write the associated reactions.

B.Allchloride is easier than N-propylchloride hydrolyzed.

Solution:B.Allchloride shows a high reactivity, since the carbocation formed in the first step is stabilized by resonance, while with N-propylchloride there is no such stabilization of the carbocation.

Section d

The following questions are case -based questions. Jede Question has an internal selection and bears 4 (1+1+2) markings. Read the passage carefully and answer the following questions.

Question 31. Strengthening the foundation:

Chargaff formulates his "rules".Many people believe that James Watson and Francis Crick discovered DNA in the 1950s. In reality, this is not the case. Rather, the DNA was first identified by the Swiss chemist Friedrich Miescher at the end of the 1860s, then in the decades after the discoveryFrom Mieschermithe.

Chargaff, an Austrian biochemist, as his first step in this DNA research, set out whether there were differences in the DNA between different types. After the development of a new paper chromatography method for separating and identifying small amounts of organic material,

Chargaff reached two main consequences: (i) The nucleotide composition of the DNA varies between the species. (II) Almost all DNA, regardless of which organism or tissue type it comes, reserves certain properties, even if its composition varies.a) The amount of thymine (t) similar, and the amount of guanine (g) approaches the amount of cytosine (c).

In other words, the total amount of purins (A + G) and the total amount of pyrimidines (C + T) are usually almost the same. This conclusion is known today as the "Chargaff's rule".These have either a striking DNA or RNA as a genetic material.

Answer the following questions:

A. A DNA segment has 100 adenin and 150 cytosin bases. How many nucleotides are there in this DNA segment? two places was found a hair and blood sample. Scientists claim that rehearsals belong to the same way. How did the scientists come to this conclusion?

C. The sample of a virus has been tested and it was found that it contains 20% adenin, 20% thymine, 20% guanin and the rest of the cytosine.-Single -Helix (C) -NA? What do you conclude from this data?

Solution:A.A = 100 SO T = 100 C = 150 SO G = 150 total nucleotide = 100+100+150+150 = 500

B.sie examined the nucleotide composition of DNA.Tes was the same and came to the conclusion that the rehearsals belong to the same way.

C.A = T = 20%, but G is not the same as the double helix is excluded. The base pairs are ATGC and not Augc, so it is not RNA, the virus is a single helix -dna virus.


Question 31.How can the rule of Chargaff be used to conclude that the genetic material of an organism is a double helix or single helix?

Solution:According to the rule of Chargaff, all double helix DNA has the same amount A and T and C.

So she is dared.Henna examines the melting point of different salt solutions. You produce a salt solution with 10 ml of water with a known mass of salt. She puts the salt solution in a freezer and lets it freeze.Frozen salt solution melts. They repeat every experiment.

S.NrMass of the salt used in GMelting point in 0c
Readings set 1Readings Set 2

Assuming the melting point of pure water as a 0OC, you answer the following questions:

A. A temperature in the second result set does not fit the pattern. What is the temperature of your answer.

B.Why did Henna collect two results?

C.Anpell from NACL, if Henna had used glucose, what would the melting point of the solution be with 0.6 g glucose in it?

Solution:The melting point of the ice cream is the freezing point of the water. In this case we can use the depression in the property of the freezer point

A.3.Readers for 0.5 g It has to take an increase in the depression of the freezing point and thus that freezing also decreases, so that the melting point decreases when the amount of salt is increased, but the trend is not followed in this case.

B.Two sentences help to avoid errors in data acquisition and to give more objective data.

c.Δtf (Glucose) = 1 x kf x 0,6 x 1000 /180 x 10

Δtf (NaCl) = 2 x kf x 0,6 x 1000 /58,5 x 10

3,8 = 2 x kf x 0,6 x 1000 /58,5 x 10

Equation 1 by 2 parts

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Δtf (Glucose) / 3,8 = 58,5 / 2x 180

ΔTF (glucose = 0.62 freezing point or melting point = - 0.62 ° C


So she is dared.What is the predicted melting point if 1.2 g salt is added to 10 ml of water? Justify your answer.

Solution:Depression at freezing is directly proportional to molality (mass of the dissolved substance if the amount of solvent remains the same.)

0.3 g depression is 1.9 ° C.

0.6 g depression is 3.8 ° C.

1.2 g depression is 3.8 x2 = 7.6 ° C

Section e

The following questions are long response types and each bear 5 points. Two questions have an internal choice.

So he returned.A.Why does the cell voltage of a mercury cell remain constant during your 10 lifespan?

B. Write the reaction that occurs on the anode and the cathode and the products of the electrolysis of AQ KCL.

C. What is the pH value of the HCL solution if the hydrogen gas electrode shows a potential of -0.59 V at standard temperature and printing?

Solution:The cell potential remains constant during its lifespan, since the overall reaction does not include an ION in a solution, the concentration of which can change over the course of its lifespan.

B.KCl (aq) à K + (aq) + cl- (aq) h2o (aq) h2o (l) + e-½CL2 (Aq) + E- (1/2) Net-Jare: kcl (aq) + h2o (al) + oh- (aq) + ).

C., the potential of the hydrogen gas electrode = –0.59 V

Electrodenreaktion: h + + E– → 0,5 h2

Apply equation, E (H+ /H2) = EO (H+ /H2) -0.059 Log [H2] 1/2 N [H+] (1) EO (H+ /H2) = 0 V E (H+ /H2) = -0.59V N = 1 [H2] = 1 bar –0.59 = 0 - 0.059 ( - log [H+]) (1/2) -0.59 = –0.059ph

∴ pH = 10


A.The molar conductivity of the substance "A" is 5.9 × 103 s/m and "B" 1 x 10-16 S/M. What is the most likely copper metal and why?

B. How is the amount of electricity in coulombs necessary to produce 4.8 g mg made of melted MGCL2? How much approx.

Mg = 24 u, nuclear mass of approx. = 40 u).

C. What is the standard change of free energy for the following reaction at room temperature? Is the reaction spontaneous?

Sn (s) + 2cu2 + (AQ) à SN2 + (AQ) + 2c + (s)

Solution:a. "A" is copper, metals are ladder and therefore have a high value of the conductivity.

B.MG2 + + 2E mg 1 mol magnesium ions wins two electron moles or 2F to form 1 mol mg

24 g mg requires 2 f electricity

4.8 g mg requires 2 x4.8/24 = 0.4 f = 0.4 x96500 = 38600C

Ca2 + + 2e- → Ca

2 F electricity is required to generate 1 mol = 40 g approx.

0.4 f electricity generates 8 g ca (1)

c.F = 96500c, n = 2,

Sn2 + (aq) + 2e - → sn (s) –0,14v

Cu2+ (aq)+ e- → cu+ (aq) 0.15 v

E ° ZELLE = E ° Cathode - And ° Anode

= 0,15-(-0,14) = 0,29 V (1)

δg ° = -nfecell

= -2 x96500x 0,29 = 55970 j/mol

Faraji 4.A hydrocarbon (a) with molecular formula C5H10 on ozonolysis results in two products (b) and (c).b) has a silver mirror in the reaction with great reagent.

A. identify (a), (b) and (c).

B. Write the reaction of B with Tollens Reagentz

C. Write the equation for the iodoform test for C.

D. Write down the equation for the Aldol condensation reaction of B and C.C.


An organic compound (a) with molecular formula C2CL3O2H is obtained when (b) reacts with red P and CL2.

A. identify A and B

B. Write the reaction for the formation of A from B. What's this reaction?

C. Enter a method with which organic compound B can be made from its corresponding acid chloride.

D. What will the acidic connection (a) or (b) be? Why that?

E. Write down the reaction to establish methane from the connection (B).

Question 35. Answer the following:

A.Why are all copper halogens known except for this copper iodide?

B. Is the EO value (V3+/V2+) comparatively low for vanadium?

C.Whl shouldn't HCL be used for potassium perpetrators?

D. Clarify the observation at the end of each period that the nuclear radius of D block elements increases slightly.

E. How does the pH value affect dichromat solution?

Solution:.a.cu2+ oxidized iodidion on iodine.

For example, low value for V is related to the stability of V2+ (half -filled T2G).

C.Permanganate titles in the presence of hydrochloric acid are unsatisfactory because hydrochloric acid is oxidized to chlorine.

D. The DABILATE is full of ten electrons and protects the electrons available in the higher S orbital to a larger extent, which leads to an increase in size.

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E.The chromate and dichromats depend on the pH value of the solution in an aqueous solution. Eerhow of the pH value (in a basic solution) of dichromations A color change of orange is observed when dichromations change to chromations

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Is CBSE released sample paper for 2023? ›

CBSE Sample Papers 2022-23 (OUT): Finally, CBSE has released the CBSE board class 10, 12th sample papers PDF in online mode. Students can download these subject-wise CBSE sample papers 2022-23 from the official website - Get direct link to the PDFs here at Jagran Josh.

Is CBSE 12 Chemistry paper easy? ›

Students who appeared for the Central Board of Secondary Education (CBSE) 12th Chemistry paper said it to be easy and high scoring. Most of the questions were from the syllabus, students informed. The 35 marks exam was taken by the students in two hours.

How can I get full marks in Chemistry 12? ›

Ans: To score above 90 marks in Chemistry, students must complete studying the topics with more weightage first followed by other topics, practice previous year question papers and sample papers, prepare revision notes and have regular revisions.

Does CBSE repeat questions from sample papers? ›

There is like 50-50% chances that some questions can be repeated. But you will get to know about the same when you appear in the exam as CBSE doesn't release information about all this. So I would suggest you to practice well and give your best in your exam.

Is 2023 board exam term wise? ›

In 2023, the board will only conduct one exam. The board has decided to do away with the term-wise examination pattern. Hence, the CBSE Board exam 2023 will be held only once. As the board moves back to the traditional once-a-year exam pattern, the marking scheme will also change accordingly.

Will 2023 boards be conducted? ›

CBSE Time Table 2023 - Central Board of Secondary Education will release the CBSE date sheet 2023 in the third week of December 2022. The CBSE board exam 2023 for Classes 10 and 12 will be conducted from February 15, 2023, tentatively.

Which board is very easy? ›

The CBSE Board syllabus is far easier compared to ICSE. The CBSE syllabus features an additional compact structure and fewer subjects.

Is NCERT enough for 12 boards? ›

NCERT books are fundamental books of the CBSE Board. These books have all the information that is required by any CBSE student of classes 10 and 12. These books are being read by all CBSE Board students since class 6th, which is why it is easy to follow and understand the language of these books.

Which is the easiest board for Class 12? ›

Answer: The syllabus of the CBSE Board is considered as quite comprehensive and easy to understand.

Is Chem 12 hard? ›

Chemistry is exceptionally hard in Grade 12! Once students gain confidence in Chemistry, it becomes a lot easier when they are taking Chemistry in University. If students scrape through Chemistry, they will then require serious tutoring in University, which is a lot more expensive than tutoring in high school.

Which is the hardest chapter in chemistry class 12? ›

  • Physical Chemistry is the hardest branch of chemistry.
  • It involves the study of physical properties and constitution of matter, the laws of chemical combination, and theories governing chemical reactions.

How do you score 150 in chemistry? ›

Score 150+ in Physics and Chemistry – Scoring Tips
  1. Clear Your Concepts. One of the basic things on how to score 150+ in Physics and Chemistry in NEET is to clear your concepts. ...
  2. Important Topics. ...
  3. The Right Reference Books. ...
  4. Practice Regularly. ...
  5. Attempt Full Mock Tests. ...
  6. Solve Previous Year Papers.
23 Aug 2022

Does CBSE give extra marks? ›

The moderated marks are not given to all candidates equally. - The students who fail the subject will not be granted moderated marks. - Candidate with 85% or less will be got all 10 marks.
CBSE added 'Extra Marks' in 12th Boards Result, Know How CBSE Explains 'Extra Marks'
8 more columns
27 Jun 2019

Is CBSE copy checking strict? ›

The CBSE evaluation process can't be considered a strict one, because the guidelines given to the teachers who check the copies are not very strict.

Are boards of 2023 Cancelled? ›

“In the light of lessening of impact of the Covid pandemic across the globe, the board has decided to conduct 2023 examination from February 15, 2023,” a CBSE statement said while issuing the Class 10, 12 CBSE 2022 results.

Will 2023 boards be MCQ? ›

As per the recently announced assessment policy of board exams 2022-23, there will be at least 40% competency-based questions in classes 9th and 10th. These questions can be multiple-choice questions, case-based, source-based integrated questions or any other type of questions.

Are 2023 exams normal? ›

GCSE and A Level exams will see a return to normal for 2023 as the UK continues to move on from Covid-19. The UK's Department for Education and exam regulator Ofqual have announced a return to pre-pandemic grading next year, but with “some protection against any impact of Covid disruption”.

Is 2023 board exam easy or hard? ›

CBSE Board exam 2023 is going to be super difficult!

It's estimated that almost 60% of the questions will be competency and subjective-based. Also, the number of case-based questions will increase and 20% of the questions on critical thinking will be included.

Will there be 2 boards in 2023? ›

A: The Board has decided to restore the pre-pandemic single-exam format, which means the class 10 and 12 board exams are not likely to be split into two parts. Q: What is the syllabus of Class 10 CBSE 2023? A: The Board exam for class 10 and 12 students next year will be based on the pre-pandemic syllabus.

Will there be boards in 2023 for Class 12? ›

CBSE Class 12 Date Sheet 2023 for Practical Exams

The exams for winter-bound schools were conducted from November 15 to December 14, 2022. The practicals for other affiliated schools will begin on January 1, 2023. Students can contact their respective schools to know about their individual practical exam dates.

Which board is toughest in India? ›

However, in the case of the ICSE Board, students encounter a comprehensive and practical-based syllabus to get an in-depth knowledge of the subject matter. This is one of the prime reasons why ICSE is the toughest board in India.

Which board is better for future? ›

Higher education: CBSE is a better option when developing a course for the future. It is more difficult to study for CBSE exams than for State exams.

Which is the No 1 board in India? ›

Central Board of Secondary Education (CBSE)

CBSE (Central Board of Secondary Education is considered to be among the most prominent and perhaps most widely acknowledged Education Boards in India.

Can I skip NCERT? ›

No , You should not skip the whole NCERT book of Physics, Chemistry and Maths for JEE Mains as they are the basic books which help you clear your concept in a very easy way plus they contain hundreds of questions for your practice and sometimes you will find NCERTs question in JEE Mains .

Can CBSE 12 students fail? ›

You will be declared failed that is if you fail two or more subjects, and you will have to repeat 12th grade. You have a chance of passing your academic if you pass the improvement test/exam.

How to score 95 in class 12 physics? ›

You have to follow a few steps before starting the preparation.
  1. Check your handwriting. Along with your preparation, your handwriting also matters to score 90+ marks in physics subject. ...
  2. Make your textbooks as Bible. ...
  3. Check your Grammar. ...
  4. Compete with yourself. ...
  5. Don't worry about the Results. ...
  6. Be Confident!
12 Nov 2020

Which board is very tough? ›

Ans: ICSE is one of the toughest boards managed by CISCE (Council for the Indian School Certificate Examination). It is similar to AISSE conducted by CBSE. ICSE has taken in a lot of structures from NCERT.

Which is the toughest board in world? ›

Here are the Top 10 Toughest Exam in the World :
  • Gaokao.
  • UPSC Civil Services Exam (CSE)
  • Joint Entrance Examination.
  • Master Sommelier Diploma Exam.
  • All Souls Prize Fellowship Exam.
  • Mensa IQ Test.
  • Chartered Financial Analyst (CFA)
  • Cisco Certified Internetworking Expert (CCIE)
27 Apr 2022

Is 1 month enough for boards class 12? ›

Because As per the syllabus of the 12th board exam, this one month is not enough, but with this latest revised exam pattern, you will have to prepare for fifty per cent of this total syllabus at a time. So if you want to get a good score, you have to ensure that you do not deviate from the aim for even a single hour.

Is Jee Chem easy? ›

JEE Main Chemistry is often considered as the easiest section in the JEE Main examination. It also happens to be the key scoring subject for JEE Main 2023. The JEE Main Chemistry section comprises mostly application-based questions. These questions require concrete theoretical knowledge.

Is Chem a lot of math? ›

Also like many of the sciences, chemistry has a bit of math. This set of readings and exercises will help prepare you for future chemistry courses. Some of the mathematical features of chemistry include exponents, scientific notation, orders of operation, algebra, unit conversion, and dimensional analysis.

Is Chem the hardest science? ›

Chemistry isn't merely a challenging science major; CollegeVine ranked it the most difficult of all the majors in its rankings of The 10 Easiest and 10 Hardest College Majors.

Which country is good at chemistry? ›

UniversitiesQS World University Rankings 2021 (Chemistry)
Tsinghua University17
Zhejiang University22
Fudan University23
University of Science and Technology of China40
1 more row
9 Jun 2021

What is the easiest chapter in chemistry? ›

Easy Chapters – High Weightage, Low Effort
  • Chemical Bonding.
  • Atomic Structure.
  • Periodic Properties.
  • General Organic Chemistry.
  • Hydrocarbons.
17 Sept 2022

Which chapter has highest weightage in chemistry? ›

High Weightage Chapters
  • Chemical Bonding and Molecular Structure.
  • Chemical Thermodynamics.
  • Chemical Kinetics.
  • Alcohols and Ethers.
  • P Block Elements.
  • General Organic Chemistry.
  • Coordination Compounds.
  • S block elements: Alkali and Alkaline Earth Metals and Hydrogen.
26 Oct 2022

How I got an A * in A Level chemistry? ›

Complete understanding of the syllabus, outstanding problem-solving skills, excellent exam technique and a focused plan are the key elements of securing the top grade for A level chemistry. Achieving an A* in A Level chemistry is difficult – only around 1 in 10 students achieve this grade each summer.

How do you score a1 in chemistry? ›

Here are some tips to master and score in Chemistry:
  1. Read and revise the assigned chemistry material before going to class.
  2. Listen to your chemistry teacher in class. ...
  3. Ask questions. ...
  4. Take plenty of notes. ...
  5. Review your notes from class. ...
  6. Make your own notes.
23 May 2019

What is the pass mark for 70 in chemistry? ›

Out of 70, you need to score atleast 23 marks in theory alone to be declared as pass in the Central Board of Secondary Education examination. This is applicable to chemistry and all other subjects which has a paper of total 70 marks. The other 30 marks are for practical examination.

How much mark is A+ in CBSE? ›

CBSE Grading System for Class 12
MarksGradesPoints for Grades
5 more rows
4 Aug 2022

Who got highest marks in CBSE? ›

In 2020, Shirija Chhabra and P. Harini emerged as CBSE toppers for Class 10 by securing 499 marks out of 500.
CBSE Class 10 Toppers List 2020.
Topper's namePercentageMarks secured
Shirija Chhabra99.80%499/500
P. Harini99.80%499/500
Ritish Agarwal99.60%498/500
4 more rows
22 Jul 2022

Which grade is fail in CBSE? ›

Aggregate scores of semesters 1 and 2 will correspond to the grades awarded. For awarding the grades, the board will put all the passed students in a rank order and will award the grades. As per the CBSE grading system, the grade “A” is the highest grade while grade “E” is the lowest.

Will CBSE fail any student? ›

A new rule has been announced by the CBSE (Central Board of Secondary Education) for the students of class 10 board who will be appearing for board exams this year.

Does CBSE fail Term 1? ›

Hope you are doing great. For the first term, students will not be given a pass or fail grade status. Only after the outcomes of the term 2 exams will they be given the final grade sheet. The CBSE and CISCE Boards are conducting class 10th and 12th examinations in two terms as part of the New Education Policy 2020.

Is mehendi allowed in CBSE board exam? ›

Yes , sure you are allowed to have henna in your hands it's not a restriction as its boards right not National level entrance.

Can teachers beat students in CBSE? ›

Conclusion. After covering the important issues, we can come to the conclusion that beating of students in schools is banned in India. It is a criminal act punishable under the rule of law and is completely unlawful and unconstitutional to do so.

Does CBSE check CCTV camera? ›

Central Board of Secondary Education (CBSE) on Tuesday said, in the upcoming board exams, it will use not just external invigilators and CCTV cameras but advanced data analytics techniques to identify malpractice and cheating at all the board exam centres in the country.

Is it OK to copy in exam? ›

Cheating and copying in tests is not the right thing to do.

It's not right by the students who actually studied or by the teacher. Those who copy and cheat are just masking their lack of knowledge.

How CBSE will conduct exams in 2023? ›

With human life returning to normalcy, the CBSE board has decided to switch to the pre-pandemic format of examinations for the upcoming academic year. This decision will mean that from now onwards CBSE 10th and 12th board exams will be conducted only once a year, as they used to be before the Coronavirus pandemic.

Will board exams be Mcq 2023? ›

As per the recently announced assessment policy of board exams 2022-23, there will be at least 40% competency-based questions in classes 9th and 10th. These questions can be multiple-choice questions, case-based, source-based integrated questions or any other type of questions.

Will there be board exam for 10th CBSE 2023? ›

The practical exams/project work/Internal assessment for all the schools affiliated with CBSE board (except winter-bound schools) will be held from January 1, 2023. 08 Dec 2022: CBSE Class 10, 12 practical exam , internal assessment and project assessment to start from January 1.

Will board exams be Cancelled for 2023? ›

According to the official statement “In the Light of lessening of the impact of COVID Pandemic across the globe, the board has decided to conduct 2023 exams from February 15, 2023”. The results for the CBSE 2022 examination for Class 10 and 12 were announced in July.

Will 2023 boards be in 2 terms? ›

A: The Board has decided to restore the pre-pandemic single-exam format, which means the class 10 and 12 board exams are not likely to be split into two parts.

Is CBSE 2023 exam date released? ›

CBSE has not officially released the datesheet of the examinations yet and as per the viral CBSE Class 12th Date Sheet 2023, the CBSE 12th exam will start on 15 February 2023.

When 2023 CBSE Board exam will be held? ›

These Class 10 and 12 students are eagerly waiting for CBSE to release the datesheets for the same. Last week, the CBSE released a circular stating that the annual board exams will commence on February 15 while the practical exams for classes 10 and 12 will begin on January 1, 2023.

Is CBSE 2023 tough? ›

CBSE Board exam 2023 is going to be super difficult!

It's estimated that almost 60% of the questions will be competency and subjective-based. Also, the number of case-based questions will increase and 20% of the questions on critical thinking will be included.

Is 2023 board exam easy? ›

If you are up to date on your preparation then the CBSE board exam is not difficult for you. Starting your preparation early will make it even easier for you.

Will Term 2 be cancelled? ›

Now, CBSE Term 2 board exam will not be cancelled!

What will be the pattern of board exam 2023? ›

The final exams will cover the entire curriculum in accordance with the CBSE curriculum for 2022–2023. 40% multiple-choice questions, 20% competency-based questions, and 40% subjective or short/long response type questions will be included on the question papers for the Class 10 board exams in 2023.

What is the new pattern of 12th 2023 CBSE? ›

The exam pattern, however, has changed. For CBSE class 12 board exams 2023, question papers would comprise 20% MCQs or objective questions. 30% would be competency-based questions. The remaining 50% would constitute the subjective or short/long answer questions.

How much attendance is required in class 12 CBSE 2023? ›

In 2023, the figures would go up to 40% in class X and 30% in class XII.

Is CBSE exam postponed 2023? ›

No, CBSE has not cancelled class 10 board exams. Class 10 students will be required to appear for exams, as per the regulations laid down by CBSE. The exam will be held once in a year (like pre-pandemic years) and will be conducted on the basis of 100 per cent syllabus.


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