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Kerala PSC - Important and Repeated General Science Questions - 02

This questions are useful for any competitive exam in Kerala Public Service Commission and all other state related exams. Try to learn by clicking the answer button. If you already know the answer then well and good, and if you don't known you will learn new Thing. Hope everyone will like this

1. What is the main constituent of coal gas?

[a] Oxygen
[b] Water
[c] Nitrogen
[d] Methane

2. Old written material, which cannot be read easily, can be read by

[a] Cosmic rays
[b] Ultraviolet rays
[c] Infrared rays
[d] none of these

3. If the distance between two masses is increased by a factor of 2, the gravitational force of attraction between them will

[a] reduce by a factor of 4
[b] reduce by a factor of 2
[c] remain Same
[d] increase by a factor of 2

4. The current I drawn from the 5 volt source will be

[a] 0.17 A
[b] 0.33 A
[c] 0.5 A
[d] 0.67 A

5. A red object, when seen through a thick blue glass, appears

[a] White
[b] Black
[c] Blue
[d] None of these

6. Which of the following is used as a moderator in nuclear reactor?

[a] Ordinary water
[b] Radium
[c] Thorium
[d] Graphite

7. In an atomic nucleus, neutrons and protons are held together by

[a] Gravitational forces
[b] Magnetic forces
[c] Exchange forces
[d] Coulombic forces

8. Television signal cannot be received generally beyond a particular distance due to

[a] Curvature of the earth
[b] Weakness of antenna
[c] Weakness of signal
[d] absorption of signal in air

9. Which one of the following is the unit of activity of a radioactive source?

[a] Lux
[b] Becquerel
[c] Tesla
[d] Siemens

10. Which one of the following is a good conductor of electricity?

[a] Shellac
[b] Ebonite
[c] Glass
[d] Human body

11. In a sitar wire which one of the following types of vibration is produced?

[a] Progressive longitudinal
[b] Stationary longitudinal
[c] Progressive transverse
[d] Stationary transverse

12. Which gas in the atmosphere saves us from the ultra violet rays of the sun?

[a] Nitrogen
[b] Oxygen
[c] Ozone
[d] Carbon Monoxide

13. What is the study of plants called?

[a] Physics
[b] Chemistry
[c] Zoology
[d] Biology

14. The three methods of science are observation, experimentation and

[a] Hypothesis
[b] Measurement
[c] Deduction
[d] inference

15. The Central Arid Zone Research Institute (CAZRI) is located at

[a] Jaipur
[b] Jodhpur
[c] Jaisalmer
[d] Jallandhar

16. What is the more common name for a polymer of amino acids?

[a] Protein
[b] Carbohydrate
[c] Enzyme
[d] Sugar

17. Which rare element would you associate with Marie and Pierre Curie?

[a] Uranium
[b] Gold
[c] Radium
[d] Platinum

18. Which chemical element is represented by the symbol Zn?

[a] Aluminium
[b] Copper
[c] Gold
[d] Zinc

19. Who discovered Penicillin?

[a] Robert Koch
[b] Sir Alexander Fleming
[c] Watson and Crick
[d] Louis Pasteur

20. In which one among the following is the speed of sound maximum?

[a] Ait at 0 degree
[b] Ait at 100 degree
[c] Water
[d] Wood

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