KERALA PSC EXAM SCIENCE RELATED QUESTIONS AND ANSWERS
Physics
domestic purpose?
(a) 460
(b) 110
(c) 230
(d) 275
2. The study of sound:
(a) Accoustics
(b) Optics
(c) Otology
(d) None of these
3. The device used to measure the depth of oceans
using sound waves:
(a) Radar
(b) Sonometer
(c) Sonar
(d) Vernier
4. In which one of the following medium, sound has
maximum speed?
(a) Vaccum
(b) Air
(c) Wood
(d) Iron
5. The speed of sound in water is .....metre per second:
(a) 340
(b) 1435
(c) 3850
(d) 5000
6. The energy source related to oceans:
(a) Solar Panel
(b) Wind Energy Farm
(c) Geothermal Energy
(d) Wave Energy
7. The mirror used in the headlight of automobiles:
(a) Cylindrical
(b) Plain
(c) Concave
(d) Convex
8. What type of mirror is used in the rear view mirror
of automobiles:
(a) Convex
(b) Concave
(c) Cylindrical
(d) None of these
9. Which ray has negative charge?
(a) Alpha
(b) Beta
(c) Gama
(d) X-ray
10. What will be the colour of sky if there is no
atmosphere?
(a) White
(b) Blue
(c) Black
(d) Green
11. The phenomenon responsible for the blue colour
of sky:
(a) Disperson
(b) Diffraction
(c) Reflection
(d) Diffusion
12. The temperature at which molecular action stops
completely:
(a) Minus 373 degree C
(b) Minus 273 degree C
(c) Zero 373 degree C
(d) 1000 degree C
13. Three primary colours of television are:
(a) Red, Green, Blue
(b) Red ,yellow, Blue
(c) Red, Yellow, Green
(d) Green, Blue, Yellow
14. The colour of universe:
(a) Black
(b) White
(c) Red
(d) Blue
15. The rays used in the remote control of TV:
(a) UV Rays
(b) Infra Red rays
(c) X rays
(d) Gama rays
16. India launched its first artificial satellite on April 19,
1975 from Kapustinyar in:
(a) Kazakhstan
(b) Russia
(c) Ukraine
(d) Uzbekistan
17. The colour of Black box in aeroplanes:
(a) Red
(b) Orange
(c) Green
(d) Blue
18. The first satellite launched by USA in 1958:
(a) Sputnik
(b) Skylab
(c) Explorer-I
(d) Challenger -I
19. Gravitational force is minimum in:
(a) Poles
(b) Equator
(c) Temperate region
(d) None of these
20. The process of convertion of one element into
another:
(a) Reduction
(b) Oxidation
(c) Transmutation
(d) Migration
1 (c) 2(a) 3 (c) 4 (d) 5(b) 6(d) 7(c) 8(a) 9(b) 10(c) 11(a)
12(b) 13(a) 14(a) 15(b) 16(b) 17(b) 18(c) 19(b) 20(c)