Nuclear Power Engineering
The emission of an a-particle causes the resultant nucleus to have

Less atomic weight and less atomic number
More atomic weight and less atomic number
Less atomic weight and more atomic number
None of these

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Nuclear Power Engineering
Water is a better coolant than a gas (like CO₂, He, N₂ etc.), because it

Requires comparatively smaller pumps and heat exchanger for a given heat transfer rate
Has a better heat transfer characteristics, and it can be pressurised to attain a high temperature
Is a better neutron moderator as well
All of these

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