Subject :NSO Class : Class 9
Subject :NSO Class : Class 7
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Subject :NSO Class : Class 4
Read the given statements and select the option which correctly identifies them as true (T) and false (F) ones.
(i) CNG should be given preference over petrol.
(ii) Biodegradable wastes cannot be broken down by microorganisms.
(iii) Afforestation increases soil erosion.
| (i) | (ii) | (iii) | |
| A | F | T | F |
| B | T | F | T |
| C | T | F | F |
| D | F | F | T |
very interesting question
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 2
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 2
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Subject :NSO Class : Class 5
Select the option that correctly gives the examples of physical and chemical changes.
| Physical change |
Chemical change |
|
|---|---|---|
| A | Tearing of paper |
Breaking of glass |
| B | Burning of paper |
Cooking of food |
| C | Rusting of iron |
Melting of butter |
| D | Formation of ice |
Burning of wood |
good question