Entry Test MCQ :: Liquids and Solids
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11. |
Hydrogen bonding is involved in |
A. |
Solubility |
B. |
Cleansing action of detergents |
C. |
Biological molecules |
D. |
All |
Answer: Option D
Explanation:
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12. |
Actually the vapour pressure on the surface of liquid in the flask is equal to |
A. |
? h |
B. |
Pa - ?h |
C. |
Pa + ?h |
D. |
Pt = Pa - ?h |
Answer: Option C
Explanation:
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13. |
Forces of attraction which may be present between all kinds of atoms and molecules are |
A. |
intramolecular |
B. |
intermolecular |
C. |
van der Waal |
D. |
Dipole-induced dipole |
Answer: Option C
Explanation:
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14. |
The density of water may be |
A. |
Equal to that of ice |
B. |
Greater than that of ice |
C. |
Less than that of ice |
D. |
All are possible |
Answer: Option B
Explanation:
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15. |
The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of |
A. |
vaporization |
B. |
evaporation |
C. |
crystallization |
D. |
sublimation |
Answer: Option A
Explanation:
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16. |
Steam causes more sever burn than the boiling water because it possesses. |
A. |
Latent heat of fusion |
B. |
Latent heat of vaporization |
C. |
Latent heat of sublimation |
D. |
All of the above |
Answer: Option B
Explanation:
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17. |
Water has maximum density at |
Answer: Option C
Explanation:
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18. |
The conversion of vapours back into their liquid state is called |
A. |
crystallization |
B. |
evaporization |
C. |
vaporization |
D. |
condensation |
Answer: Option D
Explanation:
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19. |
Formation of vapours from the surface of a liquid is called |
A. |
vapourization |
B. |
evaporation |
C. |
condensation |
D. |
cracking |
Answer: Option B
Explanation:
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20. |
When water freezes at 0?C its density decreases due to |
A. |
Change of bond angles |
B. |
Cubic structure of ice |
C. |
Empty space present in the structure of ice |
D. |
Change of bond length |
Answer: Option C
Explanation:
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