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Q. No.| Assertion (A): | Physiologists commonly use calorie (cal) and joule (j) to measure the energy requirements of animals and the energy content of food. |
| Reason (R): | One-kilo calorie is the amount of energy required to raise the temperature of 1 kg of water by 1 °C. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R) is false. |
| 4. | (A) is false, but (R) is true. |
Subtopic: Calorific value |
From NCERT
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Assertion (A): Heat is the ultimate form of all energies.
Reason (R): The energy requirements of animals are expressed in terms of a measure of heat energy.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): The energy requirements of animals are expressed in terms of a measure of heat energy.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Calorific value |
From NCERT
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