Questions with Answers Class 6 Chapter 6 Materials Around Us
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Chapter 6 of Class 6 Science, Materials Around Us, explains the basic features that make an organism live. Through simple questions and answers, students can easily understand this chapter.
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**1. Visit your kitchen and observe how your parents have organised various edibles. Can you suggest a better sorting method? Write it in your notebook.
Link the following words by putting arrows between words that have a connection.**
2. Unscramble the letters (Column I) and match with their properties (Column II).
(i) T R E M A T → MATTER → (b) Occupies space and has mass
(ii) U L S B E L O → SOLUBLE → (d) Mixes completely in water
(iii) T N E R P A S N A R T → TRANSPARENT → (a) Objects can be seen clearly through it
(iv) E R U S T L → LUSTRE → (c) Shiny surface
3. The containers which are used to store materials in shops and at home are usually transparent. Give your reasons for this.
Answer: Transparent containers allow us to see the contents clearly without opening them. This helps in identifying and selecting materials easily.
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. False Correction: Wood is opaque while glass is transparent.
(ii) Aluminium foil has lustre while an eraser does not. True
(iii) Sugar dissolves in water, whereas sawdust does not. True
(iv) An apple is a matter because it occupies no space and has mass. False Correction: An apple is matter because it occupies space and has mass.
5. We see chairs made up of various materials, such as wood, iron, plastic, bamboo, cement and stones. The 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).
(iii) Does not feel very cold when sitting during winters.
(iv) Can be cleaned regularly and made to look new even after long use.
(i) Hardness → Iron / Wood (ii) Lightweight → Plastic / Bamboo (iii) Does not feel very cold in winter → Wood / Plastic (iv) Can be cleaned easily → Plastic / Iron
6. You need to have containers for the 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 → Plastic container (waterproof) (ii) Broken glass → Metal or thick plastic container (strong and hard) (iii) Wastepaper → Cardboard or plastic container (lightweight)
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
Correct answer: (i) transparent, opaque
8. 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 is hard or soft? What about material Y? Justify your answer.
Material X → Salt (hard and soluble in water) Material Y → Clay or sponge (soft and insoluble)
X is hard because it does not change shape easily. Y is soft because it changes shape when pressed.
9. (i) Who am I? Identify me on the basis of the given properties.
(a) I have lustre. → Gold / Iron (b) I can be easily compressed. → Sponge (c) I am hard and soluble in water. → Salt (d) You cannot see clearly through me. → Frosted glass (Translucent) (e) I have mass and volume but you cannot see me. → Air
(ii) Make your own ‘Who am I?’ I am transparent and colourless. → Water
10. 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.
Given materials: vinegar, honey, mustard oil, water, glucose and wheat flour
Soluble pairs: Water + Glucose Water + Vinegar
Insoluble pairs: Water + Mustard oil Water + Wheat flour