RRB Junior Engineer (JE) Sample Paper: General Science-25

1. Water can be separated from alcohol water mixture by

(a) decantation
(b) evaporation
(c) distillation
(d) sublimation

2. Milk Sugar is

(a) Lactose
(b) Maltose
(c) Galactose
(d) Sucrose

3. Petroleum is a mixture of

(a) elements
(b) hydrocarbons
(c) polymers
(d) salts

4. The gas used for filling weather balloons is

(a) helium
(b) hydrogen
(c) air
(d) nitrogen

5. Hydrogen is not found In atmosphere because

(a) it is highly inflammable
(b) it is the lightest gas
(c) it is absorbed by plants
(d) it immediately combines with oxygen to form water

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

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