General Science Objective MCQ Quiz Test For KVS UPSC Civil Services RRB NDA CDS BSF RRB and Other Exams

General Science Objective MCQ Quiz Test For KVS UPSC Civil Services RRB NDA CDS BSF RRB and Other Exams
Basic Science Exam Questions

1. Which of the following is the lightest metal?
(a) Mercury
(b) Silver
(c)Lithium
(d)Lead
2. The most important ore of aluminium is
(a) bauxite
(b) calamine
(c) calcite
(d) galena

3.Diamond is an allotropic form of
(a) silicon
(b) carbon
(c)sulphur
(d) germanium

4.Air is a/an
(a) compound
(b) element
(c) mixture
(d) electrolyte


5.Balloons are filled with?
(a)helium
(b) oxygen
(c)nitrogen
(d) argon

6. Production of chlorofluorocarbons (CFC) gas ( A green House gas)  was used in which of the following domestic products?
(a)Television
(b) Tubelight
(c)Cooking gas
(d) Refrigerator

7. In which of the following activities silicon carbide is used?
(a) Making cenieut and glass
(b)Treating  water of ponds
(c) Making casts for statues
(d) Cutting very hard substances

8.The element common to all acids is
(a)carbon
(b) hydrogen
(c)oxygen
(d) sulphur

9.Tetraethyl lead is used as
 (a) mosquito repellent
(b) pain killer
(c) fire extinguisher
(d) petrol additive

10. Which of the following is a non-metal that remains liquid at room temperature?
(a) Bromine
(b) Chlorine
(c) Helium
(d) Phosphorus

11. From which mineral is radium obtained?
(a) Limestone
(b) Haematite
(c) Pitchblende
(d )Rutile


12.What is laughing gas?
(a) Carbon dioxide
 (b) Sulphur dioxide
(c) Hydrogen peroxide
(d) Nitrous oxide
(e) Carbon monoxide

13. Which of the following is not correctly matched?
(a) Galena: Lead sulphide
(b) Green vitriol: Copper sulphate
(c) Plaster of Path: Calcium sulphate
(d) Calomel : Mercurous chloride

14. Which of the fojiowing metals forms an amalgam with other metals ?

(a) Lead
 (b) Tin
(c) Zinc
(d) Mercury

15.Which of the following is an element?
(a)Ruby
(b) Sapphire
(c)Emerald
(d) Diamond

16.Sodium metal is kept under
(a) water
(b) alcohol
(c) petrol
(d) kerosene

17.Non sticic cooking utensils are coated with
(a) black paint
(b) PVC
(c)teflon
(d) polystyrene

18. Permanent hardness of water can be removed by adding
(a) potassium permanganate
(b) chlorine
(c) bleaching powder
(d) washing soda

19.Which of the following substances is a badconductor of electricity but a good conductor of heat?
(a)Asbestos
(b) Celluloid
(c)Purspecks
(d) Mica

20.Which of the following pairs does not contain a coinage metal?
(a) Copper and Gold
(b) Silver and Gold
(c )Zinc and Gold
(d) Copper and Silver

21. Which of the following is used in pencils?
(a)Charcoal
(b) Silicon
(c)Phosphorus
(d) Graphite


1. c
2.a
3.b
4 c
5 a
6. d
7 d
8 b
9 d
10 a
11 c
12 d
13 b
14 d
15 d
16 d
17 c
18 d
19 d
20 c
21 d

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