AIEEE 2010 | Gaseous State Question 57 | Chemistry

This chapter is currently out of syllabus

AIEEE 2010

MCQ (Single Correct Answer)

-1

Out of Syllabus

If 10^–4 dm³ of water is introduced into a 1.0 dm³ flask to 300 K, how many moles of water are in the vapour phase when equilibrium is established ?
(Given : Vapour pressure of H₂O at 300 K is 3170 Pa ; R = 8.314 J K^–1 mol^–1)

5.56 x 10^–3 mol

1.53 x 10^–2 mol

4.46 x 10^–2 mol

1.27 x 10^–3 mol

AIEEE 2007

MCQ (Single Correct Answer)

-1

Out of Syllabus

Equal masses of methane and oxygen are mixed in an empty container at 25^oC. The fraction of the total pressure exerted by oxygen is

2/3

1/2

1/3 $$\times$$ 273/298

1/3

AIEEE 2005

MCQ (Single Correct Answer)

-1

Out of Syllabus

Which one of the following statements is NOT true about the effect of an increase in temperature on the distribution of molecular speeds in a gas?

The most probable speed increases

The fraction of the molecules with the most probable speed increases

The distribution becomes broader

The area under the distribution curve remains the same as under the lower temperature

AIEEE 2004

MCQ (Single Correct Answer)

-1

Out of Syllabus

As the temperature is raised from 20°C to 40°C, the average kinetic energy of neon atoms changes by a factor of which of the following?

1/2

$$313\over293$$

$$\sqrt{313\over293}$$

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