RRB Junior Engineer (JE) Sample Paper: General Science-33

1. Gunpowder consist of a mixture of

(a) sand and TNT
(b) TNT and charcoal
(c) nitre Sulphur and charcoal
(d) Sulphur sand and charcoal

2. In nuclear reactors graphite is used as a an

(a) fuel
(b) lubricant
(c) moderator
(d) insulator

3. Sea water can be purified by the process of

(a) distillation
(b) evaporation
(c) filtration
(d) fractional distillation

4. Detergents clean surfaces on the principle of

(a) viscosity
(b) surface tension
(c) elasticity
(d) floatation

5. The compound to which H2 does not add is

(a) Biphenyl ethylene
(b) Tetraphenyl ethylene
(c) Tetraanaphthylethylene
(d) Tetra phenanthrylethylene

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

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