Subject :NSO Class : Class 4
Subject :NSO Class : Class 7
Study the given Venn diagram carefully.
Identify 1, 2 and 3.
1 | 2 | 3 | |
A | Melting of ice | Rusting of iron | Cutting a log of wood |
B | Glowing of bulb | Bursting a tyre | Crystallisation |
C | Stitching of garments | Burning a matchstick | Burning of a candle |
D |
Melting of ice | Decomposition of sugar | Sublimation |
Answer please
Ans 1:
Class : Class 8
The answer is Option C..
Because burning of candle is both physical and chemical change(melting of wax could be assumed as physical change and the burning of the thread can be assumed as chemical change.. Also, sublimation of wax also takes place and can be classified as physical change.)
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 4
Ans 3: (Master Answer)
Class : Class 1
B
Tweezers are third class lever whereas see-saw, crowbar and scissors are first class levers.
Ans 5:
Class : Class 4
Well, why don't they teach all this stuff in the synopsis?!They should, but, Admin from revisewise is correct.
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 7