Subject :NSO Class : Class 4
Subject :NSO Class : Class 6
Study the given flow chart and select the option that correctly identifies P, Q and R.

| P | Q | R | |
| A | Nitrogen | Oxygen | Carbon dioxide |
| B | Oxygen | Carbon dioxide |
Nitrogen |
| C | Nitrogen | Carbon dioxide |
Oxygen |
| D | Carbon dioxide |
Nitrogen | Oxygen |
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 4
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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 6
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Subject :NSO Class : Class 3
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Subject :NSO Class : Class 5
Select the option that correctly represents chemical change (X) and physical change (Y).
| X | Y | |
|---|---|---|
| A | Bending of wire | Ripening of mango |
| B | Cooking of food | Melting of ice |
| C | Rusting of iron | Burning of crackers |
| D | Formation of cloud | Germination of a seed |
