CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved

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Previous Year Question Papers for Class 12 Chemistry

Explore authentic exam materials through the CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved. Tailored for Class 12 learners, utilizing these Chemistry previous year papers ensures thorough preparation and strengthens time management skills before final CBSE evaluations.

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SECTION A
 CHEMISTRY
Read the given passage and answer the questions number 1 to 5 that follow :
 
Organic compounds containing amine as functional group are present in a vivid variety of compounds, namely amino acids, hormones, neurotransmitters, DNA, alkaloids, dyes, etc. Drugs including nicotine, morphine, codeine and heroin, etc. which have physiological effects on humans also contain amino group in one form or another. Amines are basic because of the presence of lone pair of electrons on nitrogen.
 
Addition of nitrogen into an organic framework leads to the formation of two families of molecules, namely amines and amides. As chemistry students, we must appreciate the versatility of nitrogen.
 
1. What are amino acids ?
 
2. Why are amino acids amphoteric ?
 
3. Give one point of difference between acidic and basic amino acid.
 
4. What are essential amino acids ?
 
5. Name the linkage formed when carboxyl end of one amino acid condenses with amino end of other amino acid.
 
6. Name the process used for the benefaction of ores if the ore is soluble in some suitable solvent.
 
7. Give an example of a metal which can be purified by the process of distillation.
 
8. What type of isomerism is shown by the complex [Co(NH3)5 NO2] Cl2 ?
 
9. An organic compound is adsorbed on the surface of silica gel. Name the process of removing the organic compound from silica gel.
 
10. Calculate the overall order of the reaction whose rate law expression was predicted as :
Rate = k[NO]3/2 [O2]1/2
 
Questions number 11 to 15 are multiple choice questions :
 
11. 50 mL of an aqueous solution of glucose C6H12O6 (Molar mass : 180 g/mol) contains 6·02 x 1022 molecules. The concentration of the solution will be
 
(A) 0·1 M
 
(B) 0·2 M
 
(C) 1·0 M
 
(D) 2·0 M
 
12. If the standard electrode potential of an electrode is greater than zero, then we can infer that its
 
(A) reduced form is more stable compared to hydrogen gas.
 
(B) oxidised form is more stable compared to hydrogen gas.
 
(C) reduced and oxidised forms are equally stable.
 
(D) reduced form is less stable than the hydrogen gas.
 
13. Total number of unpaired electrons present in Co3+ (Atomic number = 27) is
 
(A) 2
 
(B) 7
 
(C) 3
 
(D) 5
Please click on below link to download CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set B.

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Practice Exam Question Papers for Class 12 Chemistry CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved

Download CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved for Class 12 Chemistry

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Where can I download the official PDF for CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved?

The CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved is available for download on StudiesToday.com. It includes complete set with all sections so that Class 12 students can practice with the exact same paper that came in the CBSE exams.

Are the solutions for CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved based on the official CBSE marking scheme?

Yes, the solutions for CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved are prepared by subject matter experts as per official marking scheme. Class 12 students will understand the structure of answers and 'step-marks' methodology Chemistry.

How does solving CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved help in preparing for the 2026 exams?

Solving previous year papers like CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved is important to understand repeat themes and question difficulty levels of Chemistry. It helps Class 12 students to test their time management skills too.

Can I access CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved in different languages?

Yes, where applicable, CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved is available in both English and Hindi mediums. All students from Class 12 can access Chemistry study material in their preferred language.

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No, all previous year question papers on StudiesToday, including CBSE Class 12 Chemistry Boards 2020 Question Paper Set 02 Solved, are provided free of charge in mobile-friendly PDF.