MCQs for CBSE Class 12 Biomolecules: Check this article to get important MCQs for CBSE Class 12 Chemistry chapter ‘Biomolecules’. Practising with these MCQs is going to get you an idea of the type of questions for the upcoming CBSE Board Exam 2024. The Chemistry Question Paper in the Class 12 Board Exam will have 16 multiple choice type questions (MCQs) with each carrying 1 mark. Students can easily secure full marks in this section of the paper with a little practice and thorough knowledge of the chapter concepts. With the help of the MCQs with answers provided by Jagran Josh, you can revise all important concepts in just a few minutes and prepare yourself to answer similar questions correctly. You can check and download all the questions and answers from the link provided towards the end of this article.
Also Check: CBSE Class 12 Chemistry Syllabus 2023-24
MCQs for CBSE Class 12 Biomolecules (Chemistry) 2023-24
1.Which sugar is present in RNA?
(a) Glucose
(b) Fructose
(c) D-Ribose
(d) D-2-Deoxyribose
Answer:(d) D-2-Deoxyribose
2.Glucose reacts with hydroxylamine to form an oxime. This confirms the presence of
(a) straight chain of six carbon atoms
(b) carbonyl group
(c) primary alcoholic group
(d) secondary alcoholic group
Answer:(b) carbonyl group
3.Which of the following amino acid is neutral?
(a) Aspartic acid
(b) Glycine
(c) Lysine
(d) Arginine
Answer:(b) Glycine
4.The symbols D and L in the name of Carbohydrate represents
(a) Dextro rotatory nature
(b) Laevo rotatory nature
(c) The relative configuration of a particular isomer
(d) The optical activity of compounds
Answer:(c) The relative configuration of a particular isomer
5.Vitamin A is
(a) Retinol
(b) Ascorbic acid
(c) Thiamine
(d) Calciferol
Answer:(a) Retinol
6.Which of the following is/are example(s) of denaturation of protein?
(a) Coagulation of egg white
(b) Curding of milk
(c) Clotting of blood
(d) Both (a) and (b)
Answer:(d) Both (a) and (b)
7.The reagent used for obtaining osazone derivatives of fructose is
(a) NH2OH
(b) NH2-NH2
(c) NH2-NHC6H5
(d) 2,4-DNP
Answer:(c)NH2-NHC6H5
8.Nucleotides are joined together by
(a) Glycosidic linkage
(b) Peptide linkage
(c) Hydrogen bonding
(d) Phosphodiester linkage
Answer:(d) Phosphodiester linkage
9.A secondary structure of protein is stabilized by
(a) H-bond
(b) peptide bond
(c) ionic bond
(d) disulphide bond
Answer:(a) H-bond
10.Scurvy is caused due to deficiency of
(a) Vitamin B1
(b) Vitamin B2
(c) Ascorbic acid
(d) Glutamic acid
Answer:(c) Ascorbic acid
11.How many amino acids are present in insulin?
(a) 25
(b) 20
(c) 51
(d) 52
Answer: (c) 51
12.Which of the following reagents does not react with glucose?
(a) NH2OH
(b) HCN
(c) 2,4–DNP reagent
(d) Br2 water
Answer:(c) 2,4–DNP reagent
13.Which among the following is a water-soluble vitamin?
(a) Vitamin C
(b) Vitamin D
(c) Vitamin A
(d) Vitamin E
Answer:(a) Vitamin C
14.What are the hydrolysis products of lactose?
(a) β–D-galactose and β –D-Glucose
(b) α –D-Glucose and α –D-Glucose
(c) α –D-Glucose and β –D-Fructose
(d) None of these
Answer:(a) β–D-galactose and β –D-Glucose
15.Which of the following is incorrect for glucose?
(a) It contains four >CHOH groups
(b) It contains one –CH2OH group
(c) It contains one –CHO group
(d) It contains one >C=O group
Answer:(d) It contains one >C=O group
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