Correct Answer :   Argon

It is extracted from crude oil and natural gas. LPG is composed hydrocarbons containing three or four carbon atoms. The normal components of LPG thus, are propane (C3H8) and butane (C4H10).

Correct Answer :   Carbon Dioxide

The bubbles in fizzy drinks are caused by carbon dioxide (CO₂). Carbon dioxide is a colourless odourless gas that dissolves in water under pressure. The carbon dioxide forms a very weak carbonic acid, (H₂C0₃) which causes the tingly sensation on your

Correct Answer :   Nitrogen

Argon is a commonly used gas, used to fill incandescent light bulbs. It increases the bulb life by preventing the tungsten filament from deteriorating too quickly. Other gases such as helium, neon nitrogen and krypton are also used in lightning.

Correct Answer :   Edward Teller

Edward Teller, the 'father of the H-bomb', has died aged 95. Teller was one of the most controversial figures to emerge from the US nuclear-weapons programme instigated during the Second World War.

Correct Answer :   Birla Planetarium, Kolkata

Situated at Chowringhee Road adjacent to the Victoria Memorial, St. Paul's Cathedral, and the Maidan in South Kolkata, it is the largest planetarium in Asia and the second largest planetarium in the world and First in India.

Correct Answer :   A crevasse

A crevasse is simply a deep crack in a glacier or ice sheet.

Correct Answer :   Sludge

Correct Answer :   Mercury, Venus, Earth, Mars

Correct Answer :   Palaeontology

The study of fossils is called paleontology, from the Greek meaning 'ancient (paleo-) being (onto-) study (-logy)'. Scientists who study fossils are called paleontologists.

Correct Answer :   method of breeding crops to increase their nutritional value