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. |
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