RRB Junior Engineer (JE) Sample Paper: General Science-5

1. A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is

(a) the same in both cases in all respects
(b) of higher intensity when train arrives
(c) of higher pitch when train arrives
(d) of higher pitch when train departs

2. Holography is a technique of

(a) recording a permanent sharp two dimensional black and white or multicolor photograph
(b) recording a permanent three dimensional multicolour photograph
(c) recording a permanent three dimensional black and white photograph
(d) recording a permanent three dimensional photograph of a given single colour or a multicolor

3. An ice block with a piece of lead embedded in it floats in water. If ice melts the water level

(a) Rises
(b) Falls
(c) Remains same
(d) Falls first and then rises

4. The velocity of heat radiation in vacuum is

(a) Equal to that of light
(b) Less than that of light
(c) Greater than that of light
(d) Equal to that of sound

5. The plastic material commonly used for making gear wheels is

(a) Polyesters
(b) Nylons
(c) Bakelite
(d) Polystyrene

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

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