General Science » Exercise – 1
1. Which of the following is a non metal that remains liquid at room temperature ?
(a) Phosphorous
(b) Bromine
(c) Chlorine
(d) Helium
2. The gas usually filled in the electric bulb is :
(a) nitrogen
(b) hydrogen
(c) carbon dioxide
(d) oxygen
3. Washing soda is the common name for :
(a) Sodium carbonate
(b) Calcium bicarbonate
(c) Sodium bicarbonate
(d) Calcium carbonate
4. Which of the gas is not known as green house gas ?
(a) Methane
(b) Nitrous oxide
(c) Carbon dioxide
(d) Hydrogen
5. Which of the following is used as a lubricant ?
(a) Graphite
(b) Silica
(c) Iron Oxide
(d) Diamond
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