SSC CGL 2015 : GENERAL SCIENCE QUIZ

1.The average salinity of sea water is —

(A) 2%

(B) 3%

(C) 2.5%

(D) 3.5%

2. Which of the following is the most stable element?

(A) Uranium

(B) Hydrogen

(C) Oxygen

(D) Lead

3. Find the odd one ?

(A) Marble

(B) Chalk

(C) Lime Stone

(D) Slaked Lime

4. Diamond is harder than graphite because of —

(A) Difference of layers of atoms

(B) Tetrahedral structure of diamonds

(C) Difference of crystaline structures

(D) None of these

5. A super conductor is characterised by —

(A) Zero permeability

(B) Low permeability

(C) High permeability

(D) Infinite permeability

6. Of the various forms of carbon, which one is used for absorption purpose ?

(A) Diamond

(B) Graphite

(C) Coke

(D) Wood Charcoal

7. The main constituents of Pearl are —

(A) Calcium Carbonate, Magnesium Carbonate

(B) Calcium oxide, Ammonium Chloride

(C) Argonite , Chonchiolin

(D) Ammonium Sulphate, Sodium Carbonate

8. An element that does not occur in nature but can be produced artificially is —

(A) Thorium

(B) Radium

(C) Plutonium

(D) Uranium

9. The inert gas which is substituted for nitrogen in the air, used by deep sea drivers for breathing is —

(A) Helium

(B) Argon

(C) Krypton

(D) Xenon

10. The group of metals Fe, Co, Ni may be best called as —

(A) Alkali metals

(B) Rare metals

(C) Main group metals

(D) Transition metals

ANSWER KEY:
1 - (D)
2 - (D)
3 - (D)
4 - (C)
5 - (A)
6 - (D)
7 - (A)
8 - (C)
9 - (A)
10- (D)