Stoichiometry

361. Vapor pressure of a solution is proportional to (where, Sv and St are mole fraction of solvent and solute respectively).

1. S_v
2. 1/S_t
3. S_t
4. 1/S_v

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362. Vapor pressure of water at 100°C is about _________ bar.

1. 0.1013
2. 1.013
3. 10.13
4. 101.3

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363. Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the

1. Vapor follows the ideal gas law
2. Molal latent heat of vaporisation is constant within the limited temperature range
3. Volume in the liquid state is negligible compared with that in the vapor state
4. All (A), (B) & (C)

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364. Viscosity of 1 centipoise is equal to 1 Centistoke in case of

1. Water
2. Mercury
3. Carbon tetrachloride
4. None of these

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365. Viscosity of atmospheric air may be about _________ centipoise.

1. 0.015
2. 1.5
3. 15
4. 150

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366. Volume occupied by one gm mole of a gas at S.T.P. is

1. 22.4 litres
2. 22400 litres
3. 22.4 c.c
4. 359 litres

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367. Volume percent for gases is equal to the

1. Weight percent
2. Mole percent
3. Weight percent only for ideal gases
4. Mole percent only for ideal gases

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368. Water content in ground refractory material to be shaped into bricks by hand moulding is about _________ percent.

1. 5
2. 20
3. 40
4. 55

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369. Weight of 56 litres of ammonia at N.T.P. is _________ gm.

1. 2.5
2. 42.5
3. 56
4. 2800

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370. What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C?

1. 43892
2. 43891
3. 43862
4. 1/3 × (298/273)

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