Biomolecules Online Mock Test Class 12 Chemistry – NEET & JEE

By admin / November 2, 2024

Class 12 Chemistry Online Free Mock Test For NEET Class 12 Chemistry Online Free Mock Test Class 12 Chemistry Online Free Mock Test For JEE Main

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Biomolecules Online Mock Test Class 12 Chemistry

1 / 8

Which of the following statements about metabolism is false?

a) It is due to this process that biomolecules do not have a turnover

b) It involves the formation of biomolecules

c) It involves the breaking down of biomolecules

d) It involves various chemical reactions

2 / 8

Which of the following chemical classes belong to the vast group of carbohydrates?

a) Polyhydroxy ketones

b) Polyhalo aldehydes

c) Polyamino aldehydes

d) Polyhydroxy carboxylic acids

3 / 8

RNA lacks the nitrogen base of _______

a) Thymine

b) Cytosine

c) Uracil

d) Adenine

	DNA	RNA
Nitrogen bases	Adenine (A), thymine (T), cytosine (C), guanine (G)	Adenine (A), cytosine (C), guanine (G), uracil (U)

4 / 8

Which of the following statements about starch is incorrect?

a) It gives blue colour with iodine

b) It is a polymer of α-D-glucose

c) It is a reducing carbohydrate

d) It consists of branched chains

5 / 8

Which of the following statements about maltose is incorrect?

a) It consists of two glucopyranose units

b) It is a disaccharide

c) Glycosidic bond between C1 of one unit and C4 of the other unit

d) It is a non-reducing sugar

6 / 8

Sucrose is a _____ chemical, and the hydrolysis product combination is ______in nature.

a) dextrorotatory; dextrorotatory

b) laevorotatory; laevorotatory

c) laevorotatory; dextrorotatory

d) dextrorotatory; laevorotatory

7 / 8

A disaccharide is formed when two monosaccharides are bonded together by a bond.

a) glycosidic

b) peptide

c) ionic

d) phosphodiester

8 / 8

When converting a disaccharide to monosaccharides, which bond is hydrolyzed?

a) Disulfide bond

b) Glycosidic bond

c) Phosphodiester bond

d) Hydrogen bond

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