Kerala PSC Exam Coaching 2013

Selected Questions and answers for preparing Kerala PSC Junior Assistant, Lower Division Clerk-2013 and other Competitive Examinations.

1. The Periodic Table arranges the elements in the order of?

Answer: Atomic Number

2. Soap is prepared by boiling Caustic soda with?

Answer: Fats

3. Heavy water is?

Answer: Deuterium oxide (D2O)

4. Which is called ‘Rock Cotton’?

Answer: Asbestos

5. Which is called ‘Black Diamond’?

Answer: Coal

6. Which is called ‘Brown Coal’?

Answer: Lignite

7. Metals extract from sea water?

Answer: Sodium and Magnesium

8. Which is known as ‘Metal of Future’?

Answer: Titanium

9. Electron was discovered by?

Answer: J.J Thomson

10. ‘Freon’ used as refrigerant is chemically known as?

Answer: Fluorinated Hydrocarbon

11. Paper is chemically?

Answer: Cellulose

12. Plumbism is a disease caused by?

Answer: Lead

13. Ethai ethai is a disease caused by?

Answer: Cadmium

14. Minamata is a disease caused by?

Answer: Mercury

15. Which gas is evolved when a metal react with acid?

Answer: Hydrogen

16. Mercury can best be purified by?

Answer: Vacuum Distillation

17. Hardest substance in Earth is?

Answer: Diamond

18. Calgon is:

Answer: Sodium Hexametaphosphate

19. Carbon content in the steel?

Answer: 0.02 to 2.1%

20. The Chemical name of Teflon?

Answer: Polytetra Fluoroethylene

21. Impurity present in Ore is:

Answer: Gangue

22. The Atomic number was first calculated by?

Answer: H.G.J Moseley

23. Simplest Hydrocarbon?

Answer: Methane

24. Zinc is extracted by the method?

Answer: Electrolysis

25. Who coined the name Oxygen?

Answer: Lavoisier

26. The particle having major role in bending the Nucleus?

Answer: Meson

27. Substance harms to human due to smoking?

Answer: Nicotine

28. The element has Atomic number 2?

Answer: Helium

29. The gas helps to ripen fruits?

Answer: Ethylene

30. Which metal has the density less than that of water?

Answer: Sodium