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Kinetic Theory · Question 26

NEET 2013 (Karnataka)MCQEasy📈 Topic in 12% papers+4−1
1

In a vessel, the gas is at pressure P. If the mass of all the molecules is halved and their speed is doubled, then the resultant pressure will be

  1. 2P
  2. P
  3. P/2
  4. 4P

Answer

(1) 2P

Solution

P = 13 mNV v2 P mv2

P' m2 (2v)2 = 2mv2

P' = 2P

Answer: (1)

NEET 2013 (Karnataka)

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2

At 10 the value of the density of a fixed mass of an ideal gas divided by its pressure is x. At 110 this ratio is

  1. 10110x
  2. 283383x
  3. x
  4. 383283x
AIPMT 2008
3

The equation of state for 5 g of oxygen at a pressure P and temperature T, when occupying a volume V, will be (where R is the gas constant)

  1. PV = (5/32)RT
  2. PV = 5RT
  3. PV = (5/2)RT
  4. PV = (5/16)RT
AIPMT 2004
4

To find out degrees of freedom, the expression is

  1. f = 2 - 1
  2. f = + 12
  3. f = 2 + 1
  4. f = 1 + 1
AIPMT 2000

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