Important General Science: Quiz

1. Washing soda is the common name for
A. Sodium carbonate
B. Calcium bicarbonate
C. Sodium bicarbonate
D. Calcium carbonate

2. Quartz crystals normally used in quartz clocks etc. is chemically

A. silicon dioxide
B. germanium oxide
C. a mixture of germanium oxide and silicon dioxide
D. sodium silicate
3. Which of the gas is not known as green house gas?
A. Methane
B. Nitrous oxide
C. Carbon dioxide
D. Hydrogen
4. Bromine is a
A. black solid
B. red liquid
C. colourless gas
D. highly inflammable gas
5.The hardest substance available on earth is
A. Gold
B. Iron
C. Diamond
D. Platinum
6. The variety of coal in which the deposit contains recognisable traces of the original plant material is
A. bitumen
B. anthracite
C. lignite
D. peat
7. Tetraethyl lead is used as
A. pain killer
B. fire extinguisher
C. mosquito repellent
D. petrol additive
8. Which of the following is used as a lubricant?
A. Graphite
B. Silica
C. Iron Oxide
D. Diamond
9.The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
A. Argon
B. Xenon
C. Helium
D. Krypton
10. The gases used in different types of welding would include
A. oxygen and hydrogen
B. oxygen, hydrogen, acetylene and nitrogen
C. oxygen, acetylene and argon
D. oxygen and acetylene

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

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13 Comments

  1. 1) Sodium Carbonate. (Na2CO3 is called washing soda)
    2) Silicon Dioxide = quartz.
    3) Hydrogen is not a green house gas.
    4) Bromine mostly found in the form of Black Solid.
    5) Diamond is hard to break.
    6) Peat. (Order: peat, lignite, bitumen, anthracite)
    7) TEL petrol additive. (I always prefer leadfree petrol)
    8) Graphite can be used as a lubricant.
    9) Helium. (Divers breathe a mixture of oxygen, helium and nitrogen for deep dives to avoid the effects of narcosis)
    10) Oxygen and Acetylene.

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