Physical & Chemical Changes — Homi Bhabha Class 6 Chemistry MCQs with Solutions
Free Homi Bhabha Class 6 Chemistry Physical & Chemical Changes MCQs with step-by-step solutions (10 questions). Part of Properties of Matter & Changes Around Us. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Physical & Chemical Changes · easy · theory
A change in which no new substance is formed is called a …
A. Chemical change
B. Physical change ✓ Correct
C. New change
D. Colour change
Solution: In a physical change no new substance is made; only the shape, size or state changes.
Q2 — Physical & Chemical Changes · easy · theory
Which of these is a chemical change?
A. Burning a piece of paper ✓ Correct
B. Tearing a piece of paper
C. Melting an ice cube
D. Folding a cloth
Solution: Burning paper makes new substances like ash and smoke, so it is a chemical change.
Q3 — Physical & Chemical Changes · easy · theory
Melting of ice into water is an example of a …
A. Physical change ✓ Correct
B. Burning
C. Chemical change
D. Rusting
Solution: Melting only changes water from solid to liquid; no new substance forms, so it is a physical change.
Q4 — Physical & Chemical Changes · easy · theory
The rusting of an iron nail is an example of a …
A. Chemical change ✓ Correct
B. Bending
C. Melting
D. Physical change
Solution: Rust is a new substance formed on iron, so rusting is a chemical change.
Q5 — Physical & Chemical Changes · medium · theory
In a chemical change, a ____ substance is always formed.
A. new ✓ Correct
B. round
C. cold
D. wet
Solution: A chemical change always produces one or more new substances that were not there before.
Q6 — Physical & Chemical Changes · medium · theory
Which of these is a physical change?
A. Burning wood
B. Cooking an egg
C. Dissolving sugar in water ✓ Correct
D. Souring of milk
Solution: When sugar dissolves in water no new substance forms—the sugar is still there—so it is a physical change.
Q7 — Physical & Chemical Changes · medium · theory
Cooking of food is called a chemical change because …
A. The food only changes shape
B. New substances with a new taste and smell are formed ✓ Correct
C. The food only melts
D. No new substance is formed
Solution: Cooking makes new substances with a different taste and smell, so it is a chemical change.
Q8 — Physical & Chemical Changes · medium · theory
The souring of milk into curd is a …
A. Chemical change ✓ Correct
B. Physical change
C. Shape change
D. Melting change
Solution: Curd is a new substance with a different taste, so the souring of milk is a chemical change.
Q9 — Physical & Chemical Changes · hard · theory
Which pair contains only physical changes?
A. Cooking rice and burning coal
B. Melting of wax and folding of paper ✓ Correct
C. Burning of wax and rusting of iron
D. Rusting of iron and souring of milk
Solution: Melting wax and folding paper make no new substance, so both are physical changes.
Q10 — Physical & Chemical Changes · hard · theory
When a candle burns, the wax near the flame melts and the wick burns. Which statement is correct?
A. Both melting and burning are chemical changes
B. Melting of wax is a physical change, but burning is a chemical change ✓ Correct
C. Melting is chemical and burning is physical
D. Both are physical changes
Solution: Melting only changes the wax to a liquid (physical), while burning forms new substances like gases and smoke (chemical).