Sorting Materials Into Group - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Short Q&A:
Q1: Name five items which can be made of plastic.
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Ans:
Five items that can be made of plastic are plate, phone, pencil box, pen and chair.
Q2: Classify these objects as eatables or non eatables.
Sugar, apple, ball, pen, pot, grapes, chocolates
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Ans:
Eatables- sugar, apple, grapes and chocolates.
Non eatables-ball, pen and pot
Q3: Which of these objects are made of wood and which of them are made of paper?
Table, chair, newspaper, calendar, bullock cart, notebook
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Ans:
Objects made of wood- table, chair and bullock cart.
Objects made of paper-newspaper, calendar and notebook.
Q4: Which of the following are shiny objects:
Wood, copper wire, paper, chalk, aluminium sheet, steel spoon
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Ans:
Copper wire, aluminium sheet and steel spoon are shiny objects.
Q5: What is the difference between soft and hard material?
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Ans:
Soft materials are those which can be compressed or scratched easily.
Q6: Why some materials lose their shine and appear dull?
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Ans:
Some materials often lose their shine and appear dull because of the action of air and moisture on them.
Q7: 7. What types of substances are soluble in water? Give example.
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Ans:
Substances that completely disappear or dissolve in water are soluble in water. For example-salt, sugar etc.
Q8: What type of substances is called translucent?
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Ans:
The materials through which objects can be seen but not clearly are known as translucent. For example-oily patch on paper.
Q9: Classify the following on the basis of float or sink in water:
Leaf, key, apple, stone, paper
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Ans:
Float in water :leaf, paper
Sink in water: key, apple and stone.
Q10: 10. Classify the following as transparent or translucent or opaque material :
Cardboard, glass, water, oily paper, wood, stone, metal
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Ans:
Transparent –glass, water.
Translucent-oily paper
Opaque-cardboard, wood, stone, metal.
Q11: What do you mean by the term ‘transparent’?
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Ans:
Those substances or material, through which things can be seen are called transparent. For example-water, glass etc.
Q12: Match the following :
A
B
Newspaper
Chair
Shoes
Nail
Candle
Wood
Paper
Wax
Leather
Metal
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Ans:
1-b,2-a,3-d,4-e,5-c
Q13: Find the odd one out:
Iron, wood, nail, cotton.
Sugar, salt, sand, milk
Copper, wood, aluminium, gold.
Table, chair, coin, bed
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Ans:
Cotton, sand, wood, coin.
Q14: What is the difference between transparent and translucent?
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Ans:
Those substances or material, through which things can be seen are called transparent. For example-water, glass etc.
The materials through which objects can be seen but not clearly are known as translucent. For example-oily patch on paper, butter paper.