RRB Junior Engineer (JE) Sample Paper: General Science-40

1. Commercially sodium bicarbonate is known as

(a) Washing soda
(b) Baking soda
(c) Bleaching powder
(d) Soda ash

2. An emulsifier is an agent which

(a) stabilises an emulsion
(b) aids the flocculation of an emulsion
(c) accelerates the dispersion
(d) homogenises an emulsion

3. Mortar is a mixture of water sand and

(a) Slaked lime
(b) uick lime
(c) Limestone
(d) Gypsum

4. Which of the following substance is highly plastic?

(a) uartz
(b) Mica
(c) Granite
(d) Clay

5. The National Chemical Laboratoly (India) is located in

(a) Mumbai
(b) Bangaluru
(c) Hyderabad
(d) Pune

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

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