Two gases A and B having the same volume diffuse through a porou

Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

A gaseous mixture was prepared by taking equal moles of CO and N2, If the total pressure of the mixture was found 1 atmosphere, the partial pressure of the nitrogen (N2) in the mixture is

  • 0.8 atm

  • 0.9 atm

  • 1 atm

  • 0.5 atm

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2.

If x is the amount of adsorbate and m is the amount of adsorbent, which of the following relations is not related to adsorption process?

  • p = f(T) at constant (x/m)

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3.

Which of the two ions from the list given below have the geometry that is explained by the same hybridization of orbitals

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4.

If the enthalpy change for the transition of liquid water to steam is 30kJ mol-1 at 27oC, the entropy change for the process would be. 

  • 1.0 J mol- K-1

  • 0.1 J mol-1 K-1

  • 100 J  mol-1 K-1

  • 10 J mol-1 K-1

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5.

The Correct order of increasing bond length of C - H, C-O, C - C and C = C is

  • C - C < C=C < C - O < C - H

  • C - O < C - H < C - C < C = C

  • C - H < C - O <  C - C < C= C

  • C - H  < C = C < C - O < C - C

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6.

Which of the following is least likely to behave as Lewis base? 

  • NH3

  • BF3

  • OH-

  • H2O

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7.

A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of NH4 is 0.20 M. If the equilibrium constant, Kb for NH3 equals 1.8 x 10-5, what is the pH of this solution?

log ( 2.7 = 0.43)

  • 9.43

  • 11.72

  • 8.73

  • 9.08

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8.

Which of the following is the correct option for free expansion of an ideal gas under an adiabatic condition?

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9.

Enthalpy change for the reaction,

4H (g) → 2H2 (g) is - 869.6 kJ

The dissociation energy of H - H bond is

  • -869.6 kJ

  • +434.8 kJ

  • +217.4 kJ

  • +217.4 kJ

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10.

Two gases A and B having the same volume diffuse through a porous partition in 20 and 10 seconds respectively. The molecular mass of A is 49u. Molecular mass of B will be

  • 12.25 u

  • 6.50 u 

  • 25.00 u

  • 25.00 u


A.

12.25 u

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