RRB Junior Engineer (JE) Sample Paper: General Science-24

1. Which of the following gases is most toxic?

(a) Carbon dioxide
(b) Carbon monoxide
(c) Sulphur dioxide
(d) Chlorine

2. Sour milk contains

(a) acetic acid
(b) tartaric acid
(c) citric acid
(d) lactic acid

3. The acid used in lead storage cells is

(a) phosphoric acid
(b) hydrochloric acid
(c) nitric acid
(d) sulphuric acid

4. Alum stops bleeding in minor cuts because of

(a) salvation
(b) emulsion
(c) dialysis
(d) coagulation

5. Plaster of Paris is made by partial dehydration of

(a) Epsom salt
(b) gypsum salt
(c) blue vitriol
(d) green vitriol

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

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