RRB Junior Engineer (JE) Sample Paper: General Science-4

1. Which of the following statements is true when we see rainbow ?

(a) We face sun and raindrops
(b) The Sun remains behind us and we face raindrops
(c) In light rainfall we face Sun
(d) The sky remains clear and the sun is at lower position in the sky

2. The splitting of different colours of light in a prism is :

(a) Reflection of light
(b) Dispersion of light
(c) Diffraction of light
(d) Refraction of light

3. A boat will submerge when it displaces water equal to its own

(a) volume
(b) weight
(c) surface area
(d) density

4. Two waves each of amplitude 5 mm and frequency 10 Hz are travelling in opposite direction with a speed of 20 mms. The distance in mm between adjacent nodes is :

(a) 0
(b) 2
(c) 5
(d) 1

5. The snow on the mountains does NOT melt all at once when it is heated by the sun because:

(a) it becomes very hard
(b) it reflects most of the heat from the sun
(c) it has a low specific heat capacity
(d) it has a high latent heat of fusion

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