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According to the law of conservation of ...

According to the law of conservation of energy

A

energy exists in only one form

B

energy can be created but not destroyed, and it can be transformed from one form to another

C

energy exists in many forms but it cannot be transformed

D

energy can neither be produced nor be destroyed and it can be transformed from one to another form.

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The correct Answer is:
D
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MTG IIT JEE FOUNDATION-TEMPERATURE AND HEAT-EXERCISE (MULTIPLE CHOICE QUESTIONS)
  1. In electric heater

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  2. Mercury is widely used in clinical thermometers because

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  3. According to the law of conservation of energy

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  4. When the temperature of a substance is increased

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  5. The difference between lower fixed point and upper fixed point is divi...

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  6. What is the normal human body temperature?

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  7. We cannot use mercury thermometer at low temperatures because

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  8. Why a small gap is left between the iron rails of railway tracks ?

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  9. Electric wires sag in summer and become tight in the winter, because

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  10. At low temperatures types of thermometer is used.

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  11. A dog pants with its tongue sticking out on a hot day. The reason is

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  12. The change of a solid into liquid is called ………

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  13. Process of change of state from liquid to solid is called

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  14. Process of change of state from gaseous state to liquid state is calle...

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  15. When a substance changes its state from solid to liquid

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  16. Sublimation is

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  17. The temperature of the substance remains constant when it is melting a...

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  18. 1 calorie is equal to the

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  19. When two bodies at different temperatures are placed in thermal contac...

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  20. The handles of cooking vessels are covered with plastic or wood becaus...

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