RRB Junior Engineer (JE) Sample Paper: General Science-22

1. Impure camphor is purified by

(a) sublimation
(b) fractional crystallisation
(c) fractional distillation
(d) steam distillation

2. Greenhouse effect is caused by

(a) nitrogen
(b) carbon dioxide
(c) carbon monoxide
(d) nitrogen dioxide

3. Type metal used in printing press is an alloy of

(a) lead and copper
(b) lead and antimony
(c) lead and bismuth
(d) lead and zinc.

4. Sour taste of Coca Cola is due to the presence of

(a) acetic acid
(b) phosphoric acid
(c) hydrochloric acid
(d) formic acid

5. Bhopal gas tragedy is associated with leakage of

(a) carbon dioxide
(b) nitrogen dioxide
(c) Sulphur dioxide
(d) methyl isocynate

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Study Kit for RRB Junior Engineer EXAM (Phase-1) 

1(c), 2(d), 3(a), 4(d), 5(a)