Question
The gas usually causing explosions in coal mines
is-Solution
The correct answer is D
One of the constituents of tear gas is
Which one amongst the following is not a Green House gas?
The acid used in lead storage cells is-
The most reactive among the halogens is-
The absolute value of the charge on electron was determined by-
______is the process in which acids and bases react to form salts and water
Which one amongst the following is not a Green House gas?
The fuel that is used in modern submarines is -
The major constituent of air is
A polymeric substance used to make parachute is