For a certain gas which deviates a little from ideal behaviour, the values of density, p

were measured at different values of pressure, P. The plot of P/p on the Y–axis versus P on the X–axis was nonlinear and had an intercept on the Y–axis, which was equal to

(1) RTM

(2) MRT

(3) RT

(4) RTV

Where M = molar mass.

Subtopic:  Ideal Gas Law |
 69%
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NEET 2023 - Target Batch - Aryan Raj Singh
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A sample of water gas has a composition by volume of 50% H2, 45% CO and 5% CO2. Calculate the volume in litre at S.T.P. of water gas which on treatment with excess of stream will produce 5 litre H2. The equation for the reaction is : CO + H2O CO2+ H2

(1) 4.263 Litre

(2) 5.263 Litre

(3) 6.263 Litre

(4) 7.263 Litre

Subtopic:  Gas Laws |
 64%
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Flask A of volume 10 litre containing 20 gram of H2 and flask B of volume 10 litre containing 88 gram CO2 are connected by a connector having negligible volume. When the valve of the connector is opened, the composition of H2 gas in flask B after opening the valve is-

   

1. 10%

2. 13%

3. 15%

4. 20%

Subtopic:  Ideal Gas Law |
 55%
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NEET 2023 - Target Batch - Aryan Raj Singh

A mixture of two gases A and B in the mole ratio 2 : 3 is kept in a 2 litre vessel. A second 3 litre vessel has the same two gases in the mole ratio 3 : 5. Both gas mixtures have the same temperature and same total pressure. They are allowed to intermix ,the final temperature and total pressure are the same as the initial values, the final volume being 5 litres. Given that the molar masses are MA and MB, what is the mean molar mass of the final mixture?

(1) 77MA+123MB200

(2) 123MA+77MB200

(3) 77MA+123MB250

(4) 123MA+77MB250 

Subtopic:  Ideal Gas Law |
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NEET 2023 - Target Batch - Aryan Raj Singh
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A 2 m long tube closed at one end is lowered vertically into' water until the closed end is flush with the water surface. See figure below. Calculate the water level height in the tube. (Barometric pressure –1 atm =10 m of hydrostatic water head, Temperature = 25°C, Density of, water = 1.00 g/ml. Neglect water vapour pressure).

(1) 1.01 m

(2) 0.29 m

(3) 1.71m

(4) 0.92 m

Subtopic:  Gas Laws |
 55%
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At a certain temperature for which RT = 25 lit. atm. mol–1, the density of a gas, in gm lit–1, is d = 2.00P + 0.020 P2, where P is the pressure in atmosphere. The molecular weight of the gas in gm mol–1 is-

1. 25

2. 50

3. 75

4. 100

Subtopic:  Ideal Gas Law |
 72%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

A mixture of carbon monoxide and carbon dioxide is found to have a density of 1.7 g/L at S.T.P. The mole fraction of carbon monoxide is-

1. 0.37

2. 0.40

3. 0.30

4. 0.50

Subtopic:  Ideal Gas Law |
From NCERT
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Themolecular radius for a certain gas = 1.25 A. What is a reasonable estimate of the magnitude of the van der Wails constant, b, for the gas?

(1) 0.98 × 10–2 litre/mole

(2) 1.43 × 10–2 litre/mole

(3) 1.97 × 10–2 litre/mole

(4) 3.33 × 10–2 litre/mole

Subtopic:  van der Waal’s Correction |
 51%
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The van der Waal's constant 'b' for N2 and H2 has the values 0.039 lit moil–1 and 0.0266 lit mo1–1. The density of solid N2 is 1 g cm–3. Assuming the molecules in the solids to be close packed with the same percentage void, the density of solid H2 would be (in g cm–3)

(1) 0.114

(2) 0.682

(3) 1.466

(4) 0.071

Subtopic:  van der Waal’s Correction |
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NEET 2023 - Target Batch - Aryan Raj Singh
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A certain gas effuses out of two different vessels A and B. A has a circular orifice while B has a square orifice of length equal to the radius of the orifice of vessel A. The ratio of rate of diffusion of the gas from vessel A to that from vessel B is

(1) π : 1

(2) 1 : π

(3) 1 : 1

(4) 3 : 2

Subtopic:  Graham's Law |
 59%
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