NEET Practice Questions (MCQs) with Answers & Solutions

Density ratio of $ O_2 and H_2 $ gas is 16 : 1 The ratio of their rms velocities will be

At constant temperature and pressure, the rate of diffusion $ D_A and D_B $ of gases A and B having densities $P_A and P_B $ are related by the expressions (IIt Screening - 1993)

If 300ml of gas at $ 27 ^\circ C is cooled to 7 ^\circ C $ at constant pressure Its final volume will be (AIIMS - 2000)

Positive deviation from ideal gas behaviour takes place. because of

Kinetic energy of 2 moles of $ N_2$ at $27 ^\circ$ C is (R = 8.324 $JK ^{-1}mol ^{-1} ) $

The root mean square velocity of one mole mass of amono atomic as having molar mass M is Urms. The relation between average kinetic energy (E) of the gas and Urms is (IIT screening - 2004)

Triple point of water is

The root mean square velocity of an ideal gas at constant pressure varies with density (d) as (IIT- 2001)

Match gases under specified conditions listed in column I with their properties in column II Column I

1. $H_2 $ (g) (P = 200 atm, T = 273 K)
2. $H_2 (g) (P V O ) , T =273 K)
3. $CO_2 (g) ( p = 1 atm , T= 273 K)
4. real gas $SO_2 $ with bigger size of its volume Column II a) z = { PV \over RT } \neq 1 $ b) Attractive forces are dominant c) PV = nRT d) P( V - nb) = nRT

column I

1. If force of attraition among the gaseous molecules are negligible 2)If the volume of the gas molecules are negligible
2. At STP
3. At low pressure and high temperature column II a) $ ( P + { a \over v ^2 } ) ( v - b ) = RT $ b) $ PV = RT - { a \over v } $ c ) PV = RT + PB d) PV = RT .