Energy of the sun arises mainly from __________ reactions...
Energy of the sun arises mainly from __________ reactions.
fusion
fission
combustion
none of these
Correct answer is A
No explanation has been provided for this answer.
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All of the following alloying elements of steel increases hardness but sacrifice ductility, except ...
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Which one of the following is incombustible? ...
__________ is the hardest oxide and is hence used where high wear resistance at high temperature is ...
Auto collimator is used to check ...
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