Questions

Because of its being pollution free and  combustion efficient, Hydrogen gas is  called fuel of future. Because of its origin in marshy places, Methane is called as 'Marsh Gas'.

Natural gas is primarily composed of methane, but also contains ethane, propane, and heavier hydrocarbons.

Natural gas is a colorless, tasteless, odorless, and non-toxic gas. Because it is odorless, mercaptan is added to the natural gas, in very small amounts to give the gas a distinctive smell of rotten eggs. This strong smell can alert you of a potential gas leak.

It also contains small amounts of nitrogen, carbon dioxide, hydrogen sulphide and trace amounts of water.

River Dolphin is the National Aquatic Animal of India.

Varanasi and Patna are located on the river Ganga. Lucknow is on the river Gomati. Kanpur and Hardwar too are on the river Ganga. Delhi is another city located on the bank of Yamuna.

The layer of air around the earth is known as Atmosphere. And this atmosphere has 4 layers like troposhere, stratosphere, ionosphere and mesosphere.