Multiple Choice QuestionsPoints I, II and III in the following plot respectively correspond to (Vmp: most probale velocity)
Vmp of N2 (300K); Vmp of O2(400K); Vmp of H2 (300K)
Vmp of N2 (300K); Vmp of H2(300K); Vmp of O2 (400K)
Vmp of H2 (300K); Vmp of N2(300K); Vmp of O2 (400K)
Vmp of O2 (400K); Vmp of N2(400K); Vmp of H2 (300K)
Dipole-induced dipole interactions are present in which of the following pair?
H2O and alcohol
Cl2 and CCl4
HCl and He atoms
HCl and He atoms
C.
HCl and He atoms
Dipole-induced dipole interaction is present in the pair in which the first species is polar and the other is non-polar.
H2O and alcohol both are non-polar so there exist dipole-dipole interactions in between them.
Cl2 and CCl4 both are non-polar so there exists induced dipole -induced dipole interactions in between them. Similarly is true for SiCl4 and He atoms pair.
50 mL of each gas A and of gas B takes 150 and 200 s respectively for effusing through a pin hole under the similar conditions. If molecular mass of gas B is 36, the molecular mass of gas A will be
96
128
20.2
20.2
pA and pB are the vapour pressure of pure liquid components, A and B, respectively of and ideal binary solution. If xA represents the mole fraction of component A, the total pressure of the solution will be
pA + xA(pB-pA)
pA + xA(pA-pB)
pB + xA(pB-pA)
pB + xA(pB-pA)
A certain gas takes three times as long to effuse out as helium. Its molecular mass will be
27 u
36 u
64 u
64 u
For real gases van der Waal's equation is written as,
where, a and b are van der Waal's constants.
Two sets of gases are
I. O2, CO2, H2 and He
II. CH4, O2, and H2
The gases given in set- I increasing order of 'b' and gases given in set -II in decreasing order of 'a' are arranged below. Select the correct order from the following.
(I) He < H2 < CO2 < O2
(II) CH4> H2> O2
(I) O2 < He < H2 < CO2
(II) H2> O2 > CH4
(I) O2 < He < O2 < CO2
(II) CH4 > O2 > H2
(I) O2 < He < O2 < CO2
(II) CH4 > O2 > H2
Equal volumes of two monoatomic gases, A and B, at same temperature and pressure are mixed. The ratio of specific heats (Cp/Cv) of the mixture will be
0.83
1.50
3.3
3.3
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
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)
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
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