General knowledge question and answer on Chemistry



1
The system that uses radioactivity to decide the period of materials of pre-historic period is :
A.    Radium dating
B.    Uranium dating
C.    Carbon dating
D.    Deuterium dating

Answer : C.  Carbon dating

2
Which of the following is a carbohydrate ?
A.    Nylon
B.    Cane-sugar
C.    Turpentine
D.    Hydrogen peroxide

Answer : B.   Cane-sugar

3
Maximum iron ore is found in which of the following states ?
A.    FeCO3
B.    Fe2O3
C.    Fe3O4
D.    FeS2

Answer : B.   Fe2O3

4
Commercial nitric acid is coloured because it contains dissolved :
A.    Oxygen
B.    Nitrous oxide
C.    Nitrogen dioxide
D.    Colored impurities

Answer : C.  Nitrogen dioxide

5
Which gas is used for artificial fruit ripening of green fruit ?
A.    Ethylene
B.    Acetylene
C.    Ethane
D.    Methane

Answer : A.  Ethylene

6
What is the chemical name for ‘baking soda’?
A.    Sodium carbonate
B.    Sodium bicarbonate
C.    Sodium nitrite
D.    Sodium nitrate

Answer : B.   Sodium bicarbonate



7
Which of the following gases is present under pressure in soft drinks ?
A.    Oxygen
B.    Nitrogen
C.    Carbon dioxide
D.    Nitrous oxide

Answer : C.  Carbon dioxide

8
Which radioactive element used in heat pacemakers ?
A.    Uranium
B.    Deuterium
C.    Plutonium
D.    Radium

Answer : C.  Plutonium

yousuf said on (Saturday, February 03, 2018)
nice