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

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

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Nuclear Power Engineering
Molten sodium (as a coolant in fast breeder reactor)

Is highly radioactive at elevated temperatures and can cause explosion, when it comes in contact with air or water
Can't attain high temperature at normal pressure
None of these
Is not at all corrosive, even at a higher temperature

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