Class 6 Science

Chapter 6 Solutions — Materials Around Us

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Solutions

Overview

Step-by-step NCERT solutions for Materials Around Us (Chapter 6, NCERT Class 6 Science) — every question and answer worked out in full, not just the final result. You can also read the Materials Around Us textbook chapter.

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What these solutions cover

All 10 questions in Materials Around Us are solved in the PDF. Here's what's inside, exercise by exercise:

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Visit your kitchen and observe how your parents have organised various edibles. Can you suggest a better sorting method? Write it in your notebook.
2.
Unscramble the letters (Column I) and match with their properties (Column II). Column I:
- (i) T R E M A T,
- (ii) U L S B E L O,
- (iii) T N E R P A S N A R T,
- (iv) E R U S T L Column II:
- (a) Objects can be seen clearly through it,
- (b) Occupies space and has mass,
- (c) Shiny surface,
- (d) Mixes completely in water
The containers which are used to store materials in shops and at home are usually transparent. Give your reasons for this.
4.
State whether the statements given below are True [T] or False [F]. Correct the False statement(s).
- (i) Wood is translucent while glass is opaque.
- (ii) Aluminium foil has lustre while an eraser does not.
- (iii) Sugar dissolves in water whereas sawdust does not.
- (iv) An apple is a matter because it occupies no space and has mass.
5.
We see chairs made up of various materials, such as wood, iron, plastic, bamboo, cement and stones. Following are some desirable properties of materials which can be used to make chairs. Which materials used to make chairs fulfil these properties the most?
- (i) Hardness (does not bend or shake on sitting even after long use).
- (ii) Lightweight (easy to lift or to take from one place to another)…
6.
You need to have containers for collection of:
- (i) food waste,
- (ii) broken glass and
- (iii) wastepaper. Which materials will you choose for containers of these types of waste? What properties of materials do you need to think of?
7.
Air is all around us but does not hinder us from seeing each other. Whereas, if a wooden door comes in between, we cannot see each other. It is because air is ___ and the wooden door is ___. Choose the most appropriate option:
- (i) transparent, opaque
- (ii) translucent, transparent
- (iii) opaque, translucent
- (iv) transparent, translucent
Imagine you have two mysterious materials, X and Y. When you try to press material X, it feels rigid and does not change its shape easily. On the other hand, material Y easily changes its shape when you press it. Now, when you mix both materials in water, only material X dissolves completely, while material Y remains unchanged. What can materials X and Y be? Can you identify whether material X…
9.
Who am I? Identify me on the basis of the given properties.
- (a) I have lustre.
- (b) I can be easily compressed.
- (c) I am hard and soluble in water.
- (d) You cannot see clearly through me.
- (e) I have mass and volume but you cannot see me.
- (ii) Make your own 'Who am I?'
You are provided with the following materials — vinegar, honey, mustard oil, water, glucose and wheat flour. Make any two pairs of materials where one material is soluble in the other. Now, make two pairs of materials where one material remains insoluble in the other material.

Sample

Worked examples

3 questions from Materials Around Us, solved step by step.

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Visit your kitchen and observe how your parents have organised various edibles. Can you suggest a better sorting method? Write it in your notebook.

Observe where items like grains, spices, oils, and snacks are kept.

Note which items are stored together and which are kept separately.

Think about a classification based on the properties of the materials — for example, separate dry items from liquids, or group by how often they are used.

A model suggestion: Sort edibles into four groups — (1) grains and pulses (dry, stored in airtight containers), (2) spices and condiments (dry, small quantities), (3) liquids (oil, vinegar, sauces), and (4) fresh produce (vegetables, fruits). This way, similar materials are together and it is easy to find what you need.

Answer: Model answer: Classify kitchen edibles into groups such as grains and pulses, spices, liquids, and fresh produce — placing items with similar properties together for easy access.

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The containers which are used to store materials in shops and at home are usually transparent. Give your reasons for this.

Transparent containers allow us to see clearly through them.

When a container is transparent, we can identify the material stored inside without opening it.

This saves time, avoids confusion between similar-looking containers, and helps us check how much of the material is left.

In shops, transparent containers allow customers to see what is being sold, which helps in making choices quickly.

Glass and clear plastic are common transparent materials used for such containers.

Answer: Transparent containers let us see the contents inside without opening them, saving time and making it easy to identify and check the quantity of stored materials.

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You need to have containers for collection of: (i) food waste, (ii) broken glass and (iii) wastepaper. Which materials will you choose for containers of these types of waste? What properties of materials do you need to think of?

(i) Food waste: Use a plastic container with a lid. Plastic is easy to clean, does not absorb moisture or odours, and is durable. The container should be opaque (to reduce smell and keep it hygienic), waterproof (food waste may be wet), and easy to wash.

(ii) Broken glass: Use a hard, thick plastic or metal container. It should be hard and sturdy so the sharp glass pieces do not pierce through it. Avoid cardboard or paper bags as broken glass can cut through them. Properties needed: hardness and puncture resistance.

(iii) Wastepaper: A lightweight container such as a cardboard box or plastic bin works well. Wastepaper is dry and light, so the container does not need to be waterproof. Properties needed: lightweight and easy to empty.

Key properties to consider: hardness, waterproofing, ease of cleaning, and whether the material can withstand sharp or heavy contents.

Answer: (i) Food waste — plastic container (waterproof, easy to clean); (ii) Broken glass — hard plastic or metal container (sturdy, puncture-resistant); (iii) Wastepaper — cardboard box or plastic bin (lightweight, easy to empty).

All 10 questions in Materials Around Us are solved step by step in the Solutions PDF above.

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Chapter 6 Solutions — Materials Around Us

Overview

What these solutions cover

Let Us Enhance Our Learning

Worked examples

Visit your kitchen and observe how your parents have organised various edibles. Can you suggest a better sorting method? Write it in your notebook.

The containers which are used to store materials in shops and at home are usually transparent. Give your reasons for this.

You need to have containers for collection of: (i) food waste, (ii) broken glass and (iii) wastepaper. Which materials will you choose for containers of these types of waste? What properties of materials do you need to think of?

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