Chemistry-
General
Easy
Question
Which among the following compounds behave both as an electrophile as well as a nucleophile
a) 
b) 
c) 
d) 
- Only a
- a and b
- c and d
- b,c and d
The correct answer is: b,c and d
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([.]denotes the greatest integer function) is
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A diatomic ideal gas is used in a Carnot engine as the working substance. If during the adiabatic expansion part of the cycle the volume of the gas increases from V to 32 V, the efficiency of the engine is
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A refrigerator works between 4°C and 30°C. It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is: (Take 1 cal =4.2joule)
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Physics-General