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Questions Available: 17
Year: 2025
Topic: Biomolecules
1.
Match List - I with List - II

Choose the correct answer from the options given below :
(1).
A-IV, B-III, C-IL, D-I
(2).
A-I, B-III, C-II, D-IV
(3).
A-IV, B-III, C-I, D-II
(4).
A-II, B-III, C-I, D-IV

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Solution
Year: 2025
Topic: Biomolecules
2.
Sugar 'X'
A. is found in honey.
B. is a ketó sugar.
C. exists in \(\alpha\) and \(\beta\) - anomeric forms.
D. is laevorotatory.
'X' is :
(1).
Sucrose
(2).
D-Glucose
(3).
D-Fructose
(4).
Maltose

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Solution
Year: 2024
Topic: Biomolecules
3.
Fehling’s solution ‘A’ is
(1).
Alkaline solution of sodium potassium tartrate (Rochelle’s salt)
(2).
Aqueous sodium citrate
(3).
Aqueous copper sulphate
(4).
Alkaline copper sulphate

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Solution
Year: 2024
Topic: Biomolecules
4.
The reagents with which glucose does not react to give the corresponding tests/products are
A. Tollen's reagent
B. Schiff's reagent
C. HCN
D. NH2OH
E. NaHSO3
Choose the correct options from the given below:
(1).
B and E
(2).
E and D
(3).
B and C
(4).
A and D

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Solution
Year: 2023
Topic: Biomolecules
5.
Given below are two statements:
Statemnent I : A unit formed by the attachment of a base of 1' position of sugar is known as nucleoside.
Statement II : When nucleoside is linked to phosphorous acid at 5-position of sugar moiety, we get nucleotide.
In the light of the above statements, choose the correct answer from the options given below:
(1).
Both Statement I and Statement II are false.
(2).
Statement I is true but Statement II is false.
(3).
Statement I is false but Statement II is true.
(4).
Both Statement I and Statement II are true.

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Solution
Year: 2020
Topic: Biomolecules
6.
Which of the following is a basic amino acid ?
(1).
Alanine
(2).
Tyrosine
(3).
Lysine
(4).
Serine

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Solution
Year: 2020
Topic: Biomolecules
7.
Sucrose on hydrolysis gives:
(1).
\(\alpha \text{- D-Glucose + } \beta \text{-D-Glucose}\)
(2).
\(\alpha \text{- D-Glucose + } \beta \text{-D-Fructose}\)
(3).
\(\alpha \text{- D-Fructose + } \beta \text{-D-Fructose}\)
(4).
\(\beta \text{- D-Glucose + } \alpha \text{-D-Fructose}\)

Test
Solution
Year: 2020
Topic: Biomolecules
8.
Hydrolysis of sucrose is given by the following reaction.
Sucrose + H2O \(\rightleftharpoons \) Glucose + Fructose
If the equilibrium constant (Kc) is 2 x 1013 at 800 K, the value of \(\Delta \text{rG}^ \ominus \) at the same temperature will be
(1).
8.314 J mol-1K-1 x 300 K x In(2 x 1013)
(2).
8.314 J mol-1K-1 x 300 K x In(3 x 1013)
(3).
-8.314 J mol-1K-1 x 300 K x In(4 x 1013)
(4).
-8.314 J mol-1K-1 x 300 K x In(2 x 1013)

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Solution
Year: 2019
Topic: Biomolecules
9.
The non-essential amino acid among the following is
(1).
leucine
(2).
alanine
(3).
lysine
(4).
valine

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Solution
Year: 2019
Topic: Biomolecules
10.
Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is
(1).
Mg
(2).
Ca
(3).
Sr
(4).
Be

Test
Solution
Year: 2018
Topic: Biomolecules
11.
The difference between amylose and amylopectin is
(1).
amylose is made up of glucose and galactose.
(2).
amylopectin have 1 → 4 \(\alpha\) -linkage and 1 → 6 \(\beta \) - linkage.
(3).
amylose have 1 → 4 \(\alpha \) - inkage and 1 → 6 \(\beta \) - linkage.
(4).
amylopectin have 1 → 4 \(\alpha \) - linkage and 1 → 6 \(\alpha \) - linkage.

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Solution
Year: 2018
Topic: Biomolecules
12.
Which of the following compounds can form a zwitter ion ?
(1).
Glycine
(2).
Benzoic acid
(3).
Acetanilide
(4).
Aniline

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Solution
Year: 2017
Topic: Biomolecules
13.
Which of the following statements is not correct ?
(1).
Denaturation makes the proteins more active.
(2).
Insulin maintains sugar level in the blood of a human body.
(3).
Ovalbumin is a simple food reserve in egg-white.
(4).
Blood proteins thrombin and fibrinogen are involved in blood clotting.

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Year: 2017
Topic: Biomolecules
14.
Which one of the following statements is not correct ?
(1).
Coenzymes increase the catalytic activity of enzyme.
(2).
Catalyst does not initiate any reaction.
(3).
The value of equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium.
(4).
Enzymes catalyze mainly bio-chemical reactions.

Test
Solution
Year: 2016
Topic: Biomolecules
15.
In a protein molecule various amino acids are linked together by
(1).
β-glycosidic bond
(2).
peptide bond
(3).
dative bond
(4).
a-glycosidic bond

Test
Solution
Year: 2016
Topic: Biomolecules
16.
The correct statement regarding RNA and DNA , respectively is
(1).
The sugar component in RNA is ribose and the sugar component in DNA is 2`-deoxyribose
(2).
The sugar component in RNA is arabinose and the sugar component in DNA is ribose
(3).
The sugar component in RNA is 2 '-deoxyribose and the sugar component in DNA is arabinose
(4).
The sugar component in RNA is arabinose and the sugar component in DNA is 2 '-deoxyribose

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Solution
Year: 2016
Topic: Biomolecules
17.
Which one given below is a non - reducing sugar ?
(1).
Lactose
(2).
Glucose
(3).
Sucrose
(4).
Maltose

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Solution