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Which of the following are true?

  • a)
    Cooking rice is a physical change

  • b)
    Rotation of a fan is a Circular motion

  • c)
    Heat is absorbed or liberated during a change involving energy

  • d)
    B and C are true

Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of the following are true?a)Cooking rice is a physical changeb)R...
Explanation:

A: Cooking rice is a physical change:
- True. Cooking rice involves a physical change as the rice grains absorb water and increase in size and softness. The chemical composition of rice remains the same.
B: Rotation of a fan is a fast change:
- False. The rotation of a fan is a repetitive and continuous motion, not a change. It is a physical process.
C: Heat is absorbed or liberated during a change involving energy:
- True. Heat can be absorbed or released during various changes involving energy. For example, in a chemical reaction, heat can be absorbed (endothermic) or released (exothermic).
D: B and C are true:
- True. Both statement B and C are true. The rotation of a fan is a physical process, and heat can be absorbed or released during changes involving energy.
Therefore, the correct answer is D: B and C are true.
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Which of the following are true?a)Cooking rice is a physical changeb)Rotation of a fan is a Circular motionc)Heat is absorbed or liberated during a change involving energyd)B and C are trueCorrect answer is option 'D'. Can you explain this answer?
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