General Science – 1 – 1

1. Which of the following is a non metal that remains liquid at room temperature ?

(a) Phosphorous
(b) Bromine
(c) Chlorine
(d) Helium

ANSWER

EXPLANATION

2. The gas usually filled in the electric bulb is :

(a) nitrogen
(b) hydrogen
(c) carbon dioxide
(d) oxygen

ANSWER

EXPLANATION

3. Washing soda is the common name for :

(a) Sodium carbonate
(b) Calcium bicarbonate
(c) Sodium bicarbonate
(d) Calcium carbonate

ANSWER

EXPLANATION

4. Which of the gas is not known as green house gas ?

(a) Methane
(b) Nitrous oxide
(c) Carbon dioxide
(d) Hydrogen

ANSWER

EXPLANATION

5. Which of the following is used as a lubricant ?

(a) Graphite
(b) Silica
(c) Iron Oxide
(d) Diamond

ANSWER

EXPLANATION


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