Back to BIOMOLECULES

Your Progress

0 / 141 Answered

Correct

Incorrect

Accuracy

JEE • CHEMISTRY • BIOMOLECULES

Biomolecules practice · Easy

Try a question, then open “View answer” to check it. Sign in to submit answers and save progress.

Practice format and chapter quiz

These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.

Take a chapter quiz →

Showing 121-141 of 141 questions

121 Easy

121 of 141

Remembering +4 | -1

Hydrolysis of fats and oils in the body produces:

View answer and explanation

Correct option: A

A fatty acid

Option A is correct because the hydrolysis of fats and oils yields fatty acids and glycerol.

122 Easy

122 of 141

Remembering +4 | -1

Which one is a test for proteins?

View answer and explanation

Correct option: B

Biuret test

Option B (Biuret test) is correct because the Biuret test is a chemical test used for detecting the presence of peptide bonds, which are characteristic of proteins.

123 Easy

123 of 141

Understanding +4 | -1

Which molecule possess the general formula of carbohydrates, but is not a carbohydrate?

View answer and explanation

Correct option: C

Acetic acid

Option C (Acetic acid) is correct because acetic acid has the general formula of carbohydrates (

{\mathrm{C}}_n({\mathrm{H}}_2{\mathrm{O}})_n

) but is not a carbohydrate.

124 Easy

124 of 141

Remembering +4 | -1

Which of the following vitamins contains isoprene unit?

View answer and explanation

Correct option: A

Option A (A) is correct because Vitamin A's structure contains isoprene units, which are repeating 5-carbon branched units.

125 Easy

125 of 141

Remembering +4 | -1

Carbohydrates containing more than 10 simple units of sugar are called:

View answer and explanation

Correct option: D

Polysaccharides

Option D (Polysaccharides) is correct because polysaccharides are carbohydrates containing more than 10 simple sugar units.

126 Easy

126 of 141

Remembering +4 | -1

Which base is present in RNA but not in DNA?

View answer and explanation

Correct option: A

Uracil

Option A (Uracil) is correct because Uracil is a nitrogenous base found in RNA but not in DNA, where it is replaced by Thymine.

127 Easy

127 of 141

Remembering +4 | -1

The secondary structure of a protein refers to

View answer and explanation

Correct option: A

\alpha

-helical backbone

Option A (

\alpha

-helical backbone) is correct because the secondary structure of a protein primarily refers to the local folding patterns like alpha-helices and beta-sheets.

128 Easy

128 of 141

Remembering +4 | -1

Which enzyme hydrolyses triglyceride to fatty acids and glycerol?

View answer and explanation

Correct option: C

Lipase

Option C (Lipase) is correct because lipase is the enzyme that specifically hydrolyzes triglycerides into fatty acids and glycerol.

129 Easy

129 of 141

Remembering +4 | -1

Which one of the following is an ester?

View answer and explanation

Correct option: A

Coconut oil

Option A (Coconut oil) is correct because coconut oil is an ester of glycerol and fatty acids.

130 Easy

130 of 141

Remembering +4 | -1

Globular proteins are present in:

View answer and explanation

Correct option: D

All of these

Option D (All of these) is correct because globular proteins, characterized by their spherical shape and solubility in water, are found in blood, eggs, and milk.

131 Easy

131 of 141

Understanding +4 | -1

Which of the following is not a classification of proteins?

View answer and explanation

Correct option: B

Antibiotics

Option B is correct because antibiotics are drugs synthesized to inhibit or kill bacteria, and are not classified as proteins.

132 Easy

132 of 141

Remembering +4 | -1

Which of the following enzymes hydrolysis starch to glucose?

View answer and explanation

Correct option: A

Amylase

Option A (Amylase) is correct because amylase is the enzyme that specifically breaks down starch into glucose molecules through hydrolysis.

133 Easy

133 of 141

Understanding +4 | -1

How glucose is related with fructose?

View answer and explanation

Correct option: A

Functional group isomerism

Option A (Functional group isomerism) is correct because glucose (an aldohexose) and fructose (a ketohexose) differ in their functional groups (aldehyde vs. ketone).

134 Easy

134 of 141

Remembering +4 | -1

Nucleic acid are polymers of

View answer and explanation

Correct option: D

Nucleotides

Option D (Nucleotides) is correct because nucleic acids (DNA and RNA) are polymers made up of nucleotide monomers.

135 Easy

135 of 141

Remembering +4 | -1

Which of the following is ketohexose?

View answer and explanation

Correct option: C

Fructose

Option C (Fructose) is correct because fructose is a ketohexose, meaning it has six carbon atoms and a ketone functional group.

Explore Other Chapters in CHEMISTRY

View All →

P-BLOCK ELEMENTS 736 MCQs Equilibrium 696 MCQs STRUCTURE OF ATOM 634 MCQs THERMODYNAMICS 536 MCQs CHEMICAL BONDING & MOLECULAR STRUCTURE 514 MCQs SOLUTIONS 480 MCQs

136 Easy

136 of 141

Remembering +4 | -1

Which of the following is protein?

View answer and explanation

Correct option: B

Natural silk

Option B (Natural silk) is correct because natural silk is a protein fiber.

137 Easy

137 of 141

Remembering +4 | -1

The aqueous solution of which vitamin is dark pink in colour:

View answer and explanation

Correct option: D

{\mathrm{B}_{12}}

Option D (

{\mathrm{B}_{12}}

) is correct because the aqueous solution of Vitamin B12 is known to be dark pink in color.

138 Easy

138 of 141

Remembering +4 | -1

The number of milligram of KOH required to neutralise l g of the oil or fat is called:

View answer and explanation

Correct option: A

Saponification value

Option D (Acid value) is correct because the acid value is defined as the number of milligrams of KOH required to neutralize 1 gram of fat or oil.

139 Easy

139 of 141

Remembering +4 | -1

Cellulose is a:

View answer and explanation

Correct option: C

Polysaccharide

Option C (Polysaccharide) is correct because cellulose is a complex carbohydrate composed of many glucose units linked together, classifying it as a polysaccharide.

140 Easy

140 of 141

Remembering +4 | -1

The carbohydrates are important constituent of our diet; they function as:

View answer and explanation

Correct option: A

Biofuels to provide energy

Option A (Biofuels to provide energy) is correct because carbohydrates are broken down into glucose, which is then used in respiration to produce energy.

141 Easy

141 of 141

Remembering +4 | -1

Which is a protein?

View answer and explanation

Correct option: D

All of these

Option D (All of these) is correct because gelatin, casein, and plasma protein are all examples of proteins.

Revision notes and key takeaways

Review BIOMOLECULES in your textbook or class notes, then use this set to check your understanding.

Showing 121-141 of 141 questions

Continue Your Practice

📚 Switch Set (EASY)

Chapter Sets

ALL 315 MCQs EASY 141 MCQs HARD 15 MCQs MEDIUM 159 MCQs

0 /141

0✓ 0✗

0% Accuracy