Functional Groups — Homi Bhabha Exam Chemistry MCQs with Solutions
Free Homi Bhabha Exam Chemistry Functional Groups MCQs with step-by-step solutions (7 questions). Part of Carbon & Its Compounds. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Functional Groups · medium · theory
An atom or group of atoms that gives characteristic properties to an organic compound is called a:
A. noble group
B. functional group ✓ Correct
C. periodic group
D. radical group
Solution: The functional group determines the chemical behaviour of an organic compound.
Q2 — Functional Groups · medium · theory
The functional group present in alcohols (such as ethanol) is:
A. –CO– (ketone)
B. –COOH (carboxyl)
C. –CHO (aldehyde)
D. –OH (hydroxyl) ✓ Correct
Solution: Alcohols contain the hydroxyl group, –OH.
Q3 — Functional Groups · hard · theory
The functional group present in carboxylic acids like acetic acid is:
A. –OH (hydroxyl)
B. –NH₂ (amine)
C. –CHO (aldehyde)
D. –COOH (carboxyl) ✓ Correct
Solution: Carboxylic acids contain the carboxyl group, –COOH.
Q4 — Functional Groups · medium · theory
Ethanol (an alcohol) is commonly used:
A. in alcoholic drinks and as a sanitiser ✓ Correct
B. as a fertiliser
C. to make cement
D. as a fuel gas for cooking
Solution: Ethanol is used in beverages, sanitisers and as a solvent/fuel additive.
Q5 — Functional Groups · medium · theory
Vinegar, used in cooking, is a dilute solution of:
A. sulphuric acid
B. hydrochloric acid
C. sodium hydroxide
D. acetic acid (ethanoic acid) ✓ Correct
Solution: Vinegar is about 5–8% acetic (ethanoic) acid in water.
Q6 — Functional Groups · hard · theory
The compound ethanoic acid contains which functional group?
A. hydroxyl (–OH)
B. ketone (>C=O)
C. aldehyde (–CHO)
D. carboxyl (–COOH) ✓ Correct
Solution: Ethanoic acid (acetic acid) has the carboxyl group, –COOH.
Q7 — Functional Groups · hard · theory
The functional group –CHO is characteristic of:
A. alcohols
B. aldehydes ✓ Correct
C. ketones
D. carboxylic acids
Solution: The –CHO group is the aldehyde functional group.