Plastics & Glass — Homi Bhabha Class 6 Chemistry MCQs with Solutions
Free Homi Bhabha Class 6 Chemistry Plastics & Glass MCQs with step-by-step solutions (10 questions). Part of Materials in Daily Use. Practise online on Prepizo — no login needed.
▶ Practise Plastics & Glass online (free)
Questions with solutions
Q1 — Plastics & Glass · easy · theory
Which material is used to make buckets and water bottles that do NOT break when dropped?
A. Plastic ✓ Correct
B. Clay
C. Chalk
D. Glass
Solution: Plastic is light and tough and does not shatter when dropped, so it is used for buckets and water bottles.
Q2 — Plastics & Glass · easy · theory
Glass is made mainly by melting …
A. Sand ✓ Correct
B. Iron
C. Plastic
D. Wood
Solution: Glass is made by melting clean sand (with soda and limestone) at a very high temperature, so sand is its main raw material.
Q3 — Plastics & Glass · easy · theory
Raincoats and water bottles are made of plastic because plastic is …
A. Able to soak up water
B. Waterproof (it does not let water through) ✓ Correct
C. A good conductor of heat
D. Made from sheep wool
Solution: Plastic does not let water pass through it, so it is waterproof and perfect for raincoats and bottles.
Q4 — Plastics & Glass · easy · theory
Which material breaks easily into sharp pieces when it is dropped?
A. Glass ✓ Correct
B. Rubber
C. Plastic
D. Cloth
Solution: Glass is hard but brittle, so it cracks and breaks into sharp pieces when dropped, unlike bendy plastic or cloth.
Q5 — Plastics & Glass · medium · theory
Plastic is called a "non-biodegradable" material. This means that plastic …
A. Rots into soil within a day
B. Is made by animals
C. Is not rotted away by nature for many years ✓ Correct
D. Dissolves quickly in water
Solution: Non-biodegradable means nature cannot break it down easily, so plastic waste stays in the environment for a very long time.
Q6 — Plastics & Glass · medium · theory
Electric switches and plug covers are made of plastic because plastic …
A. Is a shiny metal
B. Carries electricity very well
C. Does not allow electricity to pass through it ✓ Correct
D. Attracts iron like a magnet
Solution: Plastic is a good insulator, meaning electricity cannot pass through it, so it keeps us safe when used around wires and switches.
Q7 — Plastics & Glass · medium · theory
The handles of cooking pans are often made of plastic because plastic …
A. Melts easily in cold water
B. Is heavier than the metal pan
C. Passes heat very quickly to the hand
D. Is a poor conductor of heat, so the handle stays cool ✓ Correct
Solution: Plastic does not carry heat well, so the handle stays cool enough to hold even while the metal pan is hot.
Q8 — Plastics & Glass · medium · numerical
A family uses a cloth bag instead of plastic bags. If it saves 3 plastic bags every week, how many plastic bags does it save in 4 weeks?
A. 12 ✓ Correct
B. 7
C. 3
D. 34
Solution: Multiply the bags saved each week by the number of weeks: 3 × 4 = 12 plastic bags.
Q9 — Plastics & Glass · hard · theory
Both glass and plastic can hold water. One reason we sometimes prefer a glass jar is that glass …
A. Melts in warm water
B. Never breaks at all
C. Does not add any smell or taste to the food inside it ✓ Correct
D. Is always lighter than plastic
Solution: Glass does not react with or add any smell or taste to food and drink, so it keeps them fresh and pure.
Q10 — Plastics & Glass · hard · theory
Why is burning plastic waste harmful to us?
A. It turns into clean drinking water
B. It gives off poisonous smoke and gases ✓ Correct
C. It makes fresh oxygen
D. It makes the soil fertile
Solution: When plastic burns it releases harmful, poisonous gases and smoke that pollute the air and can make people ill.