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Free gk questions Online Test - MeritNotes
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No. of Questions :10
Remaining Time :
1. Acid rains is caused due to emission of which of the following into the atmosphere?
(a)
Carbon monoxide and nitrogen
(b)
Ozone and carbon dioxide
(c)
Carbon dioxide and carbon monoxide
(d)
Oxides of nitrogen and sulphur
2. What happened when a hard boiled egg after shelling is immersed in saturated brine?
(a)
It initially grows in size and then shrinks
(b)
It shrinks
(c)
It grows in size
(d)
Its size remains unchanged
3. From which mineral is radium obtained
(a)
Pitchblende
(b)
Rutile
(c)
Limestone
(d)
Haematitie
4. Which one of the following statements is not true about cosmic rays?
(a)
They have very short wavelength
(b)
They are made of highly energetic charged particles
(c)
They originated from the sun
(d)
They are electromagnetic waves
5. Biogas mainly consists of
(a)
Carbon dioxide and methane
(b)
Hydrogen and oxygen
(c)
Hydrogen and methane
(d)
Carbon dioxide and hydrogen
6. While tinning of brass utensils, the ammonium chloride powder used to clean the hot utensil produces fumes of
(a)
Ammonia and hydrochloric acid
(b)
Hydrochloric acid
(c)
Carbon monoxide
(d)
Ammonia
7. Sodium stearate is a salt and is used
(a)
To make soap
(b)
To make fertilizer
(c)
In Paint
(d)
In gunpowder
8. H2O is liquid and H2 S is a gas because
(a)
Atomic radius of oxygen is greater than that of sulphur
(b)
Atomic radius of oxygen is greater than that of sulphur
(c)
Oxygen radius of oxygen is less than that of sulphur
(d)
Oxygen forms stronger hydrogen level than sulphur
9. The inexhaustible source of energy of the stars is due to
(a)
Excess of oxygen that helps burning and release of energy
(b)
Decay of radioactive elements
(c)
Conversion of helium to hydrogen
(d)
Conversion of hydrogen to helium
10. Helium is preferred to hydrogen in air balloons because it
(a)
Does not form an explosive mixture with air
(b)
Has greater lifting power
(c)
Is less dense
(d)
Is cheaper
