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41.

The COgas does not follow gaseous laws at all ranges of pressure and temperature because

  • it is triatomic gas

  • its internal energy is quite high

  • there is attraction between its molecules

  • it solidify at low temperature


C.

there is attraction between its molecules

Key Idea: Real gases do not follow gas laws at all temperature and pressure conditions due to two wrong assumptions in kinetic molecular theory of gases:
(i) The volume occupied by gas molecules is negligible. It is not true because gas molecules do occupy small volume.
(ii) The forces of attraction between gas molecules are zero. It is not true because attractive forces are present between molecules of real gases.


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42.

In clatherates of xenon with water, the nature of bonding between xenon and water molecule is

  • dipole induced dipole interaction

  • coordinate

  • hydrogen bonding

  • covalent


43.

For an ideal gas, the heat of reaction at constant pressure and constant volume are related as

  • H + E = pV

  • E = H + pH

  • qp = qv + nRT

  • None of the above


44.

A constant current of 30 A is passed through an aqueous solution of NaCl for a time of 1.00 h. What is the volume of Cl2 gas at STP produced?

  • 30.00 L

  • 25.08 L

  • 12.54 L

  • 1.12 L


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45.

At the same conditions of pressure, volume and temperature, work done is maximum for which gas if all gases have equal masses ?

  • NH3

  • N2

  • Cl2

  • H2S


46.

When 10 A current is passed for 80 min, the volume of hydrogen gas liberated is

  • 11.14 L

  • 5.57 L

  • 22.4 L

  • 2.78 L


47.

The pressure of a fas is 100 kPa. If it is compressed from 1 m3 to 10 dm3 find the work done.

  • 990 J

  • 9990 J

  • 9900 J

  • 99000 J


48.

LPG mainly consist of the following

  • methane

  • hydrogen

  • acetylene

  • butane


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49.

The laughing gas is

  • N2O4

  • NO

  • N2O

  • N2O5


50.

The work done when two mole of an ideal gas is compressed form a volume of 5 m3 to 1 dm3 at 300 K, under a pressure of 100 kPa is

  • 499.9kJ

  • -499.9 kJ

  • -99.5 kJ

  • 42495 kJ


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