1
JEE Advanced 2014 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

X and Y are two volatile liquids with molar weights of 10 g mol$$-$$1 and 40 g mol$$-$$1, respectively. Two cotton plugs, one soaked in X and the other soaked in Y, are simultaneously placed at the ends of a tube of length L = 24 cm, as shown in the figure. The tube is filled with an inert gas at 1 atmosphere pressure and a temperature of 300 K. Vapours of X and Y react to form a product which is first observed at a distance d cm from the plug soaked in X. Take X and Y to have equal molecular diameters and assume ideal behaviour for the inert gas and the two vapours.

JEE Advanced 2014 Paper 2 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 7 English Comprehension

The experimental value of d is found to be smaller than the estimate obtained using Graham's law. This is due to

A
larger mean free path for X as compared to that of Y.
B
larger mean free path for Y as compared to that of X.
C
increased collision frequency of Y with the inert gas as compared to that of X with the inert gas.
D
increased collision frequency of X with the inert gas as compared to that of Y with the inert gas.
2
JEE Advanced 2013 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

In the reaction, P + Q $$\to$$ R + S, the time taken for 75% reaction of P is twice the time taken for 50% reaction of P. The concentration of Q varies with reaction time as shown in the figure. The overall order of the reaction is

JEE Advanced 2013 Paper 1 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 6 English

A
2
B
3
C
0
D
1
3
IIT-JEE 2010 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

Plots showing the variation of the rate constant ($$k$$) with temperature ($$T$$) are given below. The point that follows Arrhenius equation is

A
IIT-JEE 2010 Paper 1 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 4 English Option 1
B
IIT-JEE 2010 Paper 1 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 4 English Option 2
C
IIT-JEE 2010 Paper 1 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 4 English Option 3
D
IIT-JEE 2010 Paper 1 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 4 English Option 4
4
IIT-JEE 2009 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

For a first-order reaction A $$\to$$ P, the temperature (T) dependent rate constant (k) was found to follow the equation $$\log k = - (2000){1 \over T} + 6.0$$. The pre-exponential factor A and activation energy $$E_a$$, respectively, are

A
$$1.0\times10^6~\mathrm{s^{-1}}$$ and 9.2 kJ mol$$^{-1}$$
B
$$6.0~\mathrm{s^{-1}}$$ and 16.6 kJ mol$$^{-1}$$
C
$$1.0\times10^6~\mathrm{s^{-1}}$$ and 16.6 kJ mol$$^{-1}$$
D
$$1.0\times10^6~\mathrm{s^{-1}}$$ and 38.3 kJ mol$$^{-1}$$
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