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Materials in Daily Use — Homi Bhabha Class 6 Chemistry MCQs with Solutions
Free Homi Bhabha Class 6 Chemistry Materials in Daily Use MCQs with step-by-step solutions covering Natural & Synthetic Fibres, Plastics & Glass, Metals & Non-metals, Soaps & Detergents. Practise online on Prepizo — no login needed.
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Sample questions with solutions
Q1 — Natural & Synthetic Fibres · easy · theory
Which of these fibres is obtained from a plant?
A. Wool
B. Nylon
C. Silk
D. Cotton ✓ Correct
Solution: Cotton is a natural fibre that grows in the fluffy bolls of the cotton plant, so it comes from a plant.
Q2 — Natural & Synthetic Fibres · easy · theory
Wool, the fibre that keeps us warm in winter, is obtained mainly from …
A. The jute plant
B. The silkworm
C. Sheep ✓ Correct
D. The cotton plant
Solution: Wool is a natural fibre made from the soft, thick hair of animals like sheep, so sheep are its main source.
Q3 — Natural & Synthetic Fibres · easy · theory
Silk thread is obtained from the cocoon of the …
A. Spider crab
B. Goat
C. Silkworm ✓ Correct
D. Sheep
Solution: The silkworm spins a cocoon of fine thread around itself, and this thread is unwound to get silk.
Q4 — Natural & Synthetic Fibres · easy · theory
Which one of these is a synthetic (man-made) fibre?
A. Jute
B. Nylon ✓ Correct
C. Silk
D. Cotton
Solution: Nylon is made in factories from chemicals, so it is a synthetic fibre, while cotton, silk and jute are natural.
Q5 — 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.
Q6 — 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.
Q7 — 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.
Q8 — 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.
Q9 — Metals & Non-metals · easy · theory
Which of these is a metal?
A. Carbon
B. Iron ✓ Correct
C. Sulphur
D. Oxygen
Solution: Iron is a hard, shiny metal, while sulphur, oxygen and carbon are non-metals.
Q10 — Metals & Non-metals · easy · theory
Most metals are shiny. This shine of a metal is called its …
A. Metallic lustre ✓ Correct
B. Transparency
C. Rust
D. Dullness
Solution: The natural shine seen on a clean metal surface is called metallic lustre.
Q11 — Metals & Non-metals · easy · theory
Which of these is a non-metal?
A. Copper
B. Oxygen ✓ Correct
C. Gold
D. Aluminium
Solution: Oxygen is a gas and a non-metal, while copper, gold and aluminium are all metals.
Q12 — Metals & Non-metals · easy · theory
Which of these is used to make electric wires because it carries electricity very well?
A. Plastic
B. Copper ✓ Correct
C. Rubber
D. Wood
Solution: Copper is a metal and a very good conductor of electricity, so it is used inside electric wires. Rubber, wood and plastic do not carry electricity.
Q13 — Soaps & Detergents · easy · theory
What is the main job of soap?
A. To remove dirt and grease and clean things ✓ Correct
B. To make clothes dirty
C. To add colour to clothes
D. To keep clothes wet
Solution: Soap helps to loosen and wash away dirt and greasy stains, so its main job is cleaning.
Q14 — Soaps & Detergents · easy · theory
We use soap to wash oily, greasy plates because plain water alone …
A. Cannot wash away grease and oil well ✓ Correct
B. Dissolves oil at once
C. Is itself greasy
D. Makes the plates dirtier
Solution: Oil and grease do not mix with plain water, so water alone cannot clean them well. Soap is needed to help remove the grease.
Q15 — Soaps & Detergents · easy · theory
The cleaning powder or liquid used to wash clothes in a washing machine is called a …
A. Chalk powder
B. Sand
C. Detergent ✓ Correct
D. Sugar
Solution: A detergent is a cleaning agent, often a powder or liquid, used to wash clothes, and it works well in washing machines.
Q16 — Soaps & Detergents · easy · theory
Washing our hands with soap before eating is good because soap helps to …
A. Add germs to the hands
B. Remove the colour of the skin
C. Make the hands dirty
D. Remove germs and keep us healthy ✓ Correct
Solution: Soap washes away dirt and germs from our hands, which helps to keep us healthy and prevent illness.
Q17 — Natural & Synthetic Fibres · hard · theory
After washing, nylon clothes dry much faster than cotton clothes. Why?
A. Nylon is much heavier than cotton
B. Nylon absorbs very little water ✓ Correct
C. Nylon is a natural fibre
D. Nylon is made from wool
Solution: Nylon soaks up hardly any water, so it holds less water after washing and dries quickly, unlike cotton which absorbs a lot.
Q18 — Natural & Synthetic Fibres · hard · theory
A piece of nylon melts and forms a hard round bead when heated, but a piece of cotton burns to a fine ash. What does this show?
A. All fibres are made from wool
B. Nylon is stronger than every metal
C. Cotton is a synthetic fibre
D. Synthetic fibres like nylon melt on heating, while natural fibres like cotton do not ✓ Correct
Solution: Synthetic fibres such as nylon soften and melt into a bead when heated, whereas natural cotton simply burns away to ash. This is one way to tell them apart.
Q19 — 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.
Q20 — 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.
Q21 — Metals & Non-metals · hard · theory
Why do iron gates get a reddish-brown coating during the rainy season?
A. Iron melts in the rain
B. Iron reacts slowly with air and moisture to form rust ✓ Correct
C. The paint changes into iron
D. Iron turns into a non-metal
Solution: In damp air, iron reacts slowly with oxygen and water (moisture) to form a reddish-brown layer called rust.
Q22 — Metals & Non-metals · hard · theory
Mercury is a special metal because at room temperature it is …
A. A liquid ✓ Correct
B. A very hard solid
C. A powder
D. A gas
Solution: Unlike other metals, which are solids at room temperature, mercury is a shiny liquid metal at room temperature.
Q23 — Soaps & Detergents · hard · theory
Why does soap fail to make a good lather in hard water?
A. Hard water is too clean for soap
B. The salts in hard water react with the soap to form a sticky scum ✓ Correct
C. Soap dissolves fully and disappears
D. Hard water has no minerals at all
Solution: Hard water contains calcium and magnesium salts that react with soap to form a useless white scum, leaving little soap to make lather.
Q24 — Soaps & Detergents · hard · theory
Why is a lot of detergent washed into rivers harmful?
A. It helps fish grow faster
B. The foam and chemicals pollute the water and harm fish and plants ✓ Correct
C. It makes the river water safe to drink
D. It turns the river into clean soap
Solution: Detergent foam and chemicals pollute river water and can harm the fish, plants and other living things in it.
Q25 — Natural & Synthetic Fibres · medium · theory
Natural fibres come from plants and animals. Synthetic fibres like nylon and polyester are made in factories from …
A. Cotton plants
B. Chemicals obtained from petroleum ✓ Correct
C. The wool of sheep
D. Silkworm cocoons
Solution: Synthetic fibres are man-made from chemicals that come from petroleum (and coal), not from any plant or animal.
Q26 — Natural & Synthetic Fibres · medium · theory
Which natural fibre is used to make gunny bags (sacks) and thick ropes?
A. Nylon
B. Acrylic
C. Silk
D. Jute ✓ Correct
Solution: Jute is a strong, rough plant fibre, so it is used to make gunny bags and ropes rather than soft clothing.
Q27 — Natural & Synthetic Fibres · medium · theory
Polyester, nylon and acrylic are all examples of …
A. Natural fibres
B. Synthetic fibres ✓ Correct
C. Animal fibres
D. Plant fibres
Solution: Polyester, nylon and acrylic are all made by people from chemicals, so they are grouped together as synthetic fibres.
Q28 — Natural & Synthetic Fibres · medium · theory
Which fibre is chosen for cool, comfortable summer clothes because it soaks up sweat well?
A. Cotton ✓ Correct
B. Polyester
C. Nylon
D. Acrylic
Solution: Cotton absorbs sweat and lets air pass through, so it keeps us cool and comfortable in summer.
Q29 — 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.
Q30 — 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.