What is the short cut key to centre the paragraph?
The correct answer is C
Which of the following is an iron ore ?
Who developed Hydrogen Bomb?
The gas usually causing explosions in coal mines is-
The Bhopal tragedy was caused by the gas
What happens to the weight of Iron, when it rusts?
Dry powder fire extinguishers contain
Which mineral is the ore Of aluminium?
Water gas is the mixture of
Petroleum is a mixture of-