NEET Chemistry
Relative Lowering Of Vapour Pressure
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2020 1
2010 Questions 2 MCQs
01
PYQ 2010
easy
chemistry ID: neet-201
An aqueous solution is 1.00 molal in KI. The vapour pressure of the solution can be increased by:
1. Addition of NaCl
2. Addition of Na2SO4
3. Addition of 1.00 molal Kl
4. Addition of water
1
(1)
2
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3
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4
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02
PYQ 2020
easy
chemistry ID: neet-202
If 8 g of a non-electrolyte solute is dissolved in 114 g of n-octane to reduce its vapor pressure to 80 %, the molar mass (in g mol–1) of the solute is:
[Molar mass of n-octane is 114 g mol–1]
| 1. | 40 | 2. | 60 |
| 3. | 80 | 4. | 20 |
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(1)
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(4)