General Science | Chemistry | Hydrogen and its Compounds
General Science | Chemistry | Hydrogen and its Compounds
1. One mole of Hydrogen gas burns in excess of Oxygen to give 290 kJ of heat. What is the amount of heat produced when 4g of Hydrogen gas is burnt under the same conditions?
145 kg
290 kg
580 kg
1160 kg
Correct Answer
Wrong Answer
2. Burning of Hydrogen produces
Oxygen
Ash
Soil
Water
Correct Answer
Wrong Answer
3. Which one of the following fuels causes minimum air pollution?
Kerosene oil
Hydrogen
Coal
Diesel
Correct Answer
Wrong Answer
4. Heavy water is a type of
Coolant
Moderator
Ore
Fuel
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Wrong Answer
5. The substance used as moderator and coolant both, in nuclear reactors is
Ordinary water
Heavy water
Liquid Ammonia
Liquid Hydrogen
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Wrong Answer
6. What is heavy water?
Oxygen + Heavy Hydrogen
Hydrogen + Oxygen
Hydrogen + New Oxygen
Heavy Hydrogen + Heavy Oxygen
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Wrong Answer
7. Heavy water is that water
The temperature of which is kept constant at 4°C
In which insoluble salts of Calcium and Potassium are present
In which isotopes takes place of Hydrogen
In which isotopes takes place of Oxygen
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Wrong Answer
8. Heavy water
Contains more dissolved air
Contains deuterium in place of Hydrogen
Contains more dissolved minerals and salts
Contains organic impurities
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9. Who among the following discovered heavy water?
Heinrich Hertz
H.C. Urey
G. Mendel
Joseph Priestly
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10. Heavy water has molecular weight
18
20
36
54
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Wrong Answer
11. Which one of the following catalysts is used in hydrogenation of vegetable oils?
Zinc
Platinum
Nickel
Iron
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12. Permanent hardness of water is due to
Chlorides and sulphates of Calcium and Magnesium
Calcium bicarbonate sulphates
Magnesium bicarbonate
Clorides of Silver and Potassium
Correct Answer
Wrong Answer
13. The pH value for water is
Nearly zero
Nearly 7
5 or less than 5
8.7 or more
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Wrong Answer
14. Which is the purest form of water?
Tap water
Sea water
Rain water
Distilled water
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15. Water is a good solvent of ionic salts because
It has a high boiling point
It has a high dipole moment
It has a high specific heat
It has no colour
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16. Large quantities of drinking water is prepared from impure water by
Desalination
Distillation
Ion-exchange
Decantation
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Wrong Answer
17. Which gas is used in the purification of drinking water?
Helium
Chlorine
Fluorine
Carbon Dioxide
Correct Answer
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18. By which process the sea water can be converted into pure water?
Deliquescence
Efflorescence
Electric separation
Reverse osmosis
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Wrong Answer
19. The process used for transforming salty water into pure water is called
Deliquescence
Efflorescence
Electric separation
Reverse osmosis
Correct Answer
Wrong Answer
20. By which process, Alum cleans the muddy water?
Absorption
Adsorption
Coagulation
Dialysis
Correct Answer
Wrong Answer
21. The gas used in the manufacture of Vanaspati Ghee from Vanaspati Oil is
Hydrogen
Oxygen
Nitrogen
Carbon dioxide
