General Science Model Questions and Answers for preparing all PSC Examinations.
1. The chief nitrogenous product in the human urine is:
Ans. Urea
2. International voluntary blood donation day:
Ans. November 6
3. Ageing in human beings caused due by disappearance of which gland?
Ans. Thymus
4. Wisdom teach normally appears in the age group:
Ans. 17-30 years
5. Chemically an enzyme is a:
Ans. Protein
6. The red color of ripe tomatoes is due to the presence of:
Ans. Carotenoids
7. Who discovered leprosy bacillus:
Ans. Hansen
8. Penicillin is obtained from:
Ans. Fungus
9. Operator flood refers to:
Ans. Milk production
10. Pure water is obtained from sea water by the process of:
Ans. Distillation
11. The purest form of iron is:
Ans. Wrought iron
12. The type of water which does not lather easily is called:
Ans. Hard water
13. An element that does not occur in nature but can be produced artificially is:
Ans. Plutonium
14. Actinides are the elements with atomic number from:
Ans. 89 to103
15. The two elements that are frequently used for making transistors are:
Ans. Silicon & Germanium
16. From which mineral is radium obtained:
Ans. Pitchblende
17. Bleaching powder is made from:
Ans. Lime and chlorine
18. Nuclear fission is caused by the impact of:
Ans. Neutron
19. Titanium is purified by:
Ans. Van Arkel method
20. Unit of loudness:
Ans. Decibel
21. The kinetic energy of a body depends on its:
Ans. Velocity
22. The period of revolution of a geostationary satellite is:
Ans. 24 hours
23. The color of a star depends on its:
Ans. Temperature
24. Who put forward Drift Theory?
Ans. Alfred Wegner
25. A rainbow is formed by the …………. of the light by water droplets.
Ans. Dispersion and total internal reflection.
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