CBSE Class 12 Chemistry Question Paper 2020 Set D Solved

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Read and download CBSE Class 12 Chemistry Question Paper 2020 Set D Solved designed as per the latest question paper pattern and Class 12 examination guidelines issued by CBSE, NCERT and KVS. The past year Question Papers for Class 12 Chemistry have been provided with solutions which will help students to assess their performance and find out topics in Chemistry Class 12 which they need to improve to get better marks in Class 12 exams. After solving these last year papers also refer to solved Sample Papers for Class 12 Chemistry available on our website to build strong understanding of the subject

Chemistry Question Paper Class 12

Students can refer to the below Class 12 Chemistry Question Paper designed to help students understand the pattern of questions that will be asked in Class 12 exams. Please download CBSE Class 12 Chemistry Question Paper 2020 Set D Solved

Chemistry Class 12 Question Paper

1. What type of magnetism is shown by a substance if magnetic moments of domains are arranged in same direction?
 
2. Draw the structure of 4-tertbutyl-3-iodoheptane. 
 
3. Arrange the following in decreasing order of basic strength in gas phase:
C2H5NH2 , (C2H5)2NH, (C2H5)3N , NH3
 
4. Write the structure of the following:
4-fluoro-2-hydroxyacetophenone
 
5. Give the equation of reaction for the preparation of phenol from cumene. 
 
6. Explain the following:
i) Henry’s law about dissolution of a gas in a liquid
ii) Boiling point elevation constant for a solvent.
 
7. Explain the following observations:
i) Transition metals generally form coloured compounds.
ii) The highest oxidation state of a metal is exhibited in its oxide or fluoride.
What happens when KI solution is added to
i) Alkaline solution of KMnO4?
ii) Acidified solution of KMnO4?
 
8. Explain the following terms:
i) Electrophoresis
ii) Dialysis
 
9. For a certain reaction, variation in the concentration, ln[R] Vs time(s) plot is given below:
CBSE Class 12 Chemistry Question Paper 2020 Set D Solved 1
 
i) What is the order of the reaction?
ii) What are the units of rate constant k?
iii) Give the relationship between k and t1/2?
iv) What does the slope of the above line indicate?
 
10. What happens in the following activities and why?
i) An electrolyte is added to a hydrated ferric oxide sol in water.
ii) A beam of light is passed through a colloidal solution.
 
11. The density of chromium metal is 7.2 g cm-3. If the unit cell has edge length of 289 pm, determine
i) The type of unit cell
ii) The radius of chromium metal
(At.mass of Cr = 52 u, N0= 6.023 x 1023 )
 
12. Describe the preparation of potassium permanganate from pyrolusite ore. Write balanced chemical equation for one reaction to show the oxidizing nature of potassium permanganate.
 
13. Give reasons for the following observations:
i) p-dichlorobenzene has higher melting point than those of o and m –isomers.
ii) Haloarenes are less reactive than haloalkanes towards nucleophillic substitution reaction.
iii) The treatment of alkyl chloride with aqueous KOH leads to the formation of alcohol but in the presence of alcoholic KOH, alkene is the major product.
 
14. Assuming complete ionization, calculate the expected freezing point of solution prepared by dissolving 7.00g of Glauber’s salt, Na2SO4.10H2O in 100 g of water.
(Kf for water = 1.86 K kg mol-1)(RAM of Na = 23, S = 32 , O = 16, H =1 u)
 
15. How are the following conversions carried out?
i) Ethanoic acid to methanamine
ii) Nitromethane to dimethyl amine
iii) Chlorobenzene to p-chloroaniline
 
16. i) Name the method used for refining of zirconium.
ii) What is the role of CO in the extraction of iron?
iii) What is meant by the term pyrometallurgy?
 
17. Write the mechanism of the following reaction :
 
                    H+
2CH3CH2OH   →  CH3CH2-O-CH2CH3
 
18. A first order reaction takes 40 minutes for 30% decomposition. Calculate t1/2 for this reaction.
OR
Consider the reaction : 2A + B → C + D
Following results were obtained in experiments designed to study the rate of reaction:
CBSE Class 12 Chemistry Question Paper 2020 Set D Solved 2
i) Write the rate law for the reaction.
ii) Calculate the value for the rate constant for the reaction.
 
19. i) What type of linkage holds together the monomers of DNA?
ii) What are the expected products of hydrolysis of lactose?
iii) What happens when D-glucose is treated with
a) HI
b) HNO3
 
20. i) Write the formula for the following coordination compound:
Amminebromidochloridonitrito-N-platinate(II)
ii) Why is geometrical isomerism not possible in tetrahedral complexes having two different types of unidentate ligands coordinated with the central metal ion?
iii) On the basis of crystal field theory, write the electronic configuration of d4 ion if Δt> p.
 
21. Account for the following :
i) XeF2 is linear molecule without a bend.
ii) The electron gain enthalpy with negative sign for fluorine is less than that of chlorine, still
fluorine is a stronger oxidizing agent than chlorine.
iii) Nitrogen shows catenation properties less than phosphorous.
 
22. i) Classify the following as addition and condensation polymers:
Terylene, Bakelite, Polyvinyl chloride, Polythene.
ii) Explain the difference between Buna – N and Buna – S.
 
23. Natural sweeteners, eg; sucrose add to calorie intake and therefore, cannot be used by diabetic patients. Such people use saccharin, alitame, aspartame as artificial sweeteners. These are boon for people who want to control their calorie intake.
i) Why is the use of aspartame limited to cold food and soft drinks?
ii) What is the drawback of alitame?
iii) Which is a better artificial sweetener than alitame and why?
iv) What are the values possessed by people taking less sugar?
 
24. i) Draw the structure of the following compounds:
a) XeF4
b) H3PO4
ii) Assign reasons for the following :
a) SF6 is kinetically inert.
b) NF3 is an exothermic compound whereas NCl3 is not.
c) HCl is a stronger acid than HF though fluorine is more electronegative than chlorine.
OR
i) How is ammonia prepared on a large scale? Name the process and mention the optimum conditions for the production of ammonia by this process.
ii) Complete the following chemical equations :
a) NH4Cl (aq.)+ NaNO2 (aq. ) →
b) P4 + 3NaOH + 3H2O →
iii) Why is Ka2<< Ka1 for H2SO4 in water?


Please click on below link to download CBSE Class 12 Chemistry Question Paper 2020 Set D Solved

2022
CBSE Class 12 Chemistry Question Paper 2022 Set A Solved
CBSE Class 12 Chemistry Question Paper 2022 Set B Solved
CBSE Class 12 Chemistry Question Paper 2022 Set C Solved
2021
CBSE Class 12 Chemistry Question Paper 2021 Set A Solved
CBSE Class 12 Chemistry Question Paper 2021 Set B Solved
CBSE Class 12 Chemistry Question Paper 2021 Set C Solved
2020
CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A
CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set B
CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set C
CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set D
CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set E
CBSE Class 12 Chemistry Compartment Question Paper Solved 2020 Set A
CBSE Class 12 Chemistry Question Paper 2020 Set A
CBSE Class 12 Chemistry Question Paper 2020 Set B
CBSE Class 12 Chemistry Question Paper 2020 Set C Solved
CBSE Class 12 Chemistry Question Paper 2020 Set D Solved
CBSE Class 12 Commercial Art Compartment Question Paper 2020
2019
CBSE Class 12 Chemistry For Blind Question Paper Solved 2019
CBSE Class 12 Chemistry Question Paper Solved 2019 Set A
CBSE Class 12 Chemistry Question Paper Solved 2019 Set B
CBSE Class 12 Chemistry Question Paper Solved 2019 Set C
CBSE Class 12 Chemistry Question Paper Solved 2019 Set D
CBSE Class 12 Chemistry Question Paper Solved 2019 Set E
CBSE Class 12 Chemistry Question Paper Solved 2019 Set F
CBSE Class 12 Chemistry Question Paper Solved 2019 Set G
CBSE Class 12 Chemistry Question Paper Solved 2019 Set H
CBSE Class 12 Chemistry Question Paper Solved 2019 Set I
CBSE Class 12 Chemistry Question Paper Solved 2019 Set J
CBSE Class 12 Chemistry Question Paper Solved 2019 Set K
CBSE Class 12 Chemistry Question Paper Solved 2019 Set L
CBSE Class 12 Chemistry Question Paper Solved 2019 Set M
CBSE Class 12 Chemistry Question Paper Solved 2019 Set N
CBSE Class 12 Chemistry Question Paper Solved 2019 Set O
2018
CBSE Class 12 Chemistry Board Question Paper Solved 2018 Set 1
CBSE Class 12 Chemistry Board Question Paper Solved 2018 Set 2
CBSE Class 12 Chemistry Board Question Paper Solved 2018 Set 3
CBSE Class 12 Chemistry Compartment Question Paper Solved Solved 2018 Set 1
CBSE Class 12 Chemistry Compartment Question Paper Solved Solved 2018 Set 2
CBSE Class 12 Chemistry Compartment Question Paper Solved Solved 2018 Set 3
2017
CBSE Class 12 Chemistry Question Paper All India with answers 2017 (1)
CBSE Class 12 Chemistry Question Paper All India with answers 2017 (2)
CBSE Class 12 Chemistry Question Paper All India with answers 2017 (3)
CBSE Class 12 Chemistry Question Paper Delhi with answers 2017 (1)
CBSE Class 12 Chemistry Question Paper Delhi with answers 2017 (2)
CBSE Class 12 Chemistry Question Paper Delhi with answers 2017 (3)
CBSE Class 12 Chemistry Question Paper Foreign with answers 2017 (1)
CBSE Class 12 Chemistry Question Paper Foreign with answers 2017 (2)
CBSE Class 12 Chemistry Question Paper Foreign with answers 2017 (3)
2016
CBSE Class 12 Chemistry Question Paper 2016 Set 1 C
CBSE Class 12 Chemistry Question Paper 2016 Set 1 Delhi
CBSE Class 12 Chemistry Question Paper 2016 Set 1 E
CBSE Class 12 Chemistry Question Paper 2016 Set 1 Foreign
CBSE Class 12 Chemistry Question Paper 2016 Set 1 N
CBSE Class 12 Chemistry Question Paper 2016 Set 1 S
CBSE Class 12 Chemistry Question Paper 2016 Set 2 C
CBSE Class 12 Chemistry Question Paper 2016 Set 2 Delhi
CBSE Class 12 Chemistry Question Paper 2016 Set 2 E
CBSE Class 12 Chemistry Question Paper 2016 Set 2 Foreign
CBSE Class 12 Chemistry Question Paper 2016 Set 2 N
CBSE Class 12 Chemistry Question Paper 2016 Set 2 S
CBSE Class 12 Chemistry Question Paper 2016 Set 3 C
CBSE Class 12 Chemistry Question Paper 2016 Set 3 Delhi
CBSE Class 12 Chemistry Question Paper 2016 Set 3 E
CBSE Class 12 Chemistry Question Paper 2016 Set 3 Foreign
CBSE Class 12 Chemistry Question Paper 2016 Set 3 N
CBSE Class 12 Chemistry Question Paper 2016 Set 3 S
2015
CBSE Class 12 Chemistry Question Paper 2015 (Delhi Set 1) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Delhi Set 1 (with answers) Reval
CBSE Class 12 Chemistry Question Paper 2015 (Delhi Set 2) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Delhi Set 2 (with answers) Reval
CBSE Class 12 Chemistry Question Paper 2015 (Delhi Set 3) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Delhi Set 3 (with answers) Reval
CBSE Class 12 Chemistry Question Paper 2015 (Outside Delhi Set 1) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Outside Delhi Set 1 (with answers) Reval
CBSE Class 12 Chemistry Question Paper 2015 (Outside Delhi Set 2) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Outside Delhi Set 2 (with answers) Reval
CBSE Class 12 Chemistry Question Paper 2015 (Outside Delhi Set 3) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Outside Delhi Set 3 (with answers) Reval
2014
CBSE Class 12 Chemistry Question Paper 2014 Set 1 - Delhi
CBSE Class 12 Chemistry Question Paper 2014 Set 1 - Foreign
CBSE Class 12 Chemistry Question Paper 2014 Set 1 - Outside Delhi
CBSE Class 12 Chemistry Question Paper 2014 Set 2 - Delhi
CBSE Class 12 Chemistry Question Paper 2014 Set 2 - Foreign
CBSE Class 12 Chemistry Question Paper 2014 Set 2 - Outside Delhi
CBSE Class 12 Chemistry Question Paper 2014 Set 3 - Delhi
CBSE Class 12 Chemistry Question Paper 2014 Set 3 - Foreign
CBSE Class 12 Chemistry Question Paper 2014 Set 3 - Outside Delhi
CBSE Class 12 Chemistry Question Paper SA2 2014 (1)
CBSE Class 12 Chemistry Question Paper SA2 2014 (2)
CBSE Class 12 Chemistry Question Paper SA2 2014 (3)
CBSE Class 12 Chemistry Question Paper SA2 2014 (4)
2013
CBSE Class 12 Chemistry Question paper 2013 (1)
CBSE Class 12 Chemistry Question paper 2013 (2)
CBSE Class 12 Chemistry Question paper 2013 (3)
CBSE Class 12 Chemistry Question paper 2013 (4)
CBSE Class 12 Chemistry Question paper 2013 (5)
CBSE Class 12 Chemistry Question paper 2013 (6)
CBSE Class 12 Chemistry Question Paper SA 2 2013 (1)
CBSE Class 12 Chemistry Question Paper SA 2 2013 (2)
CBSE Class 12 Chemistry Question Paper SA1 2013 (1)
CBSE Class 12 Chemistry Question Paper SA1 2013 (2)
CBSE Class 12 Chemistry Question Paper SA2 2013
2012
CBSE Class 12 Chemistry Question paper 2012 (1)
CBSE Class 12 Chemistry Question paper 2012 (2)
CBSE Class 12 Chemistry Question Paper SA 1 2012 (1)
CBSE Class 12 Chemistry Question Paper SA 1 2012 (2)
2011
CBSE Class 12 Chemistry 2011 Solved Question Paper
CBSE Class 12 Chemistry Question paper 2011 (1)
CBSE Class 12 Chemistry Question paper 2011 (2)
CBSE Class 12 Chemistry Question paper 2011 (3)
2010
CBSE Class 12 Chemistry 2010 Solved Question Paper
CBSE Class 12 Chemistry Question Paper SA 1 2010 (1)
2009
CBSE Class 12 Chemistry Question paper 2009 (1)
CBSE Class 12 Chemistry Question paper 2009 (2)
CBSE Class XII Chemistry Question paper 2009
2008
CBSE Class 12 Chemistry Question Paper 2008
CBSE Class 12 Chemistry Question paper 2008 (1)
CBSE Class 12 Chemistry Question paper 2008 (2)
CBSE Class 12 Chemistry Question paper 2008 (3)
CBSE Class 12 Chemistry Question Paper 2008 Answers
CBSE Class 12 Chemistry Question Paper 2008 Answers(2)
CBSE Class 12 Chemistry Question Paper 2008(2)
CBSE Class XII Chemistry Question paper 2008
2007
CBSE Class 12 Chemistry Question paper 2007 (1)
CBSE Class 12 Chemistry Question paper 2007 (2)
CBSE Class 12 Chemistry Question paper 2007 (3)
2006
CBSE Class 12 Chemistry Question paper 2006 (1)
CBSE Class 12 Chemistry Question paper 2006 (2)
CBSE Class 12 Chemistry Question paper 2006 (3)
CBSE Class 12 Chemistry Question paper 2006 (4)
2005
CBSE Class 12 Chemistry Question paper 2005 (1)
CBSE Class 12 Chemistry Question paper 2005 (2)
* More Question Papers
CBSE Class XII Chemistry Question Paper 1
CBSE Class XII Chemistry Question Paper 2
CBSE Class XII Chemistry Question Paper 3
CBSE Class XII Chemistry Question Paper 4 (For Blind Students)

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Previous Year Question Paper Chemistry Class 12

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Class 12 Chemistry Previous Year Question Papers

The past year question papers CBSE Class 12 Chemistry Question Paper 2020 Set D Solved covers all the topics which have been suggested by CBSE in their Class 12 Chemistry syllabus for the current year. By doing all CBSE Class 12 Chemistry Question Paper 2020 Set D Solved PYP (previous year papers) you will understand the regular questions and MCQ questions for Class 12 Chemistry which are always asked and learn them so that you can get full marks in those questions.

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Chemistry Previous Year Question Papers Class 12 with Solutions

We have provided CBSE Class 12 Chemistry Question Paper 2020 Set D Solved with solutions. You will be able to understand the type of answers which you should write in Class 12 Chemistry exams to score good marks. You should attempt all the last year question paper for Class 12 and Class 12 Chemistry MCQ Test in examination conditions at home and then compare their answers with the solutions provided by our teachers. This way you will be able to identify your weak areas and also understand how the teachers of Class 12 Chemistry set their questions in the exams.

CBSE Class 12 Chemistry Previous Year Question Papers with solutions

We have provided the last 10 years Class 12 Chemistry Question Papers. Students who want to practice question papers from all previous years can easily get them on studiestoday. We are the leading website in India from which you can download all the latest Class 12 Chemistry study material for free as per the CBSE syllabus for Class 12 Chemistry for the current academic year.
 

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