For the following questions answer them individually
An electrochemical cell which is used as a source of direct electrical current of constant voltage under standard conditions is called a:
Impeachment : Proceedings against the president violation of the Constitution can initiated in:
The opening ceremony of the ICC Cricket World Cup 2015 was held on 12 February 2015 in which cities of New Zealand and Australia ?
A light wave is incident over a plane surface with velocity X. After reflection the velocity becomes: