In which of the following examples mechanical energy is transformed in

1.	In which of the following examples mechanical energy is transformed into heat energy?
A.	Electrolysis
B.	Rubbing two pieces of stone to generate fire.
C.	Burning of magnesium.
D.	In steam engine.
E.	None of these
Answer» C. Burning of magnesium.

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In which of the following examples mechanical energy is transformed into heat energy?

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