Questions

The comma ( , ) is a punctuation mark in English which is most frequently used.

It is perhaps also the most abused and misused punctuation mark among all.

DNA fingerprinting is used to identify the parents, thieves and rapists.

He cannot issue an ordinance , when both the Houses of Parliament are in session. Every ordinance issued by the President should be laid before both Houses of Parliament, within six weeks of re-assembly of Parliament . The president may also withdraw an ordinance at any time he likes.

Energy tranfer takes place either by means of Heat or Work only in Thermodynamics.

Heat :: Heat Energy is defined as Energy that can be transferred due to temperature change.

Whereas

Thermal Energy :: Thermal Energy is the Internal Energy stored in the system maintained at a certain Temperature.