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MCQ Tutorial - General Knowledge->Physics

                        
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1.) Radiocarbon is produced in the atmosphere as a result of
Options are:
A.) Lightning discharge in atmosphere
B.) Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
C.) Collision between fast neutrons and nitrogen nuclei present in the atmosphere
D.) Action of ultraviolet light from the sun on atmospheric oxygen
                        
2.) It is easier to roll a stone up a sloping road than to lift it vertical upwards because of 
Options are:
A.) Work done in lifting the stone is equal to rolling it
B.) Work done in rolling a stone is less than in lifting it
C.) Work done in rolling is more than in lifting
D.) Work done in both is same but the rate of doing work is less in rolling
3.) The absorption of ink by blotting paper involves
Options are:
A.) Diffusion of ink through the blotting
B.) Capillary action phenomenon
C.) Siphon action
D.) Viscosity of ink
4.) Siphon will fail to work if 
Options are:
A.) The temperature of the liquids in the two vessels are the same
B.) Both its limbs are of unequal length
C.) The level of the liquid in the two vessels are at the same height
D.) The densities of the liquid in the two vessels are equal
5.) Large transformers, when used for some time, become very hot and are cooled by circulating oil. The
heating of the transformer is due to
Options are:
A.) Intense sunlight at noon
B.) Hysteresis loss alone
C.) The heating effect of current alone
D.) Both the heating effect of current and hysteresis loss
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