1
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

The root mean square (rms) speed of X$$_2$$ gas is x m/s at a given temperature. When the temperature is doubled, the X$$_2$$ molecules dissociated completely into atoms. The root mean square speed of the sample of gas then becomes (in m/s)

A
x/2
B
x
C
2x
D
4x
2
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Which of the following would give a linear plot?

(k is the rate constant of an elementary reaction and T is temp. in absolute scale)

A
k vs T
B
k vs 1/T
C
ln k vs T
D
ln k vs 1/T
3
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

The equivalent conductance of NaCl, HCl and CH$$_3$$COONa at infinite dilution are 126.45, 426.16 and 91 ohm$$^{-1}$$cm$$^2$$eq$$^{-1}$$ respectively at 25$$^\circ$$C. The equivalent conductance of acetic acid (at infinite dilution) would be

A
461.61 ohm$$^{-1}$$cm$$^2$$eq$$^{-1}$$
B
390.71 ohm$$^{-1}$$cm$$^2$$eq$$^{-1}$$
C
cannot be determined from the given data.
D
208.71 ohm$$^{-1}$$cm$$^2$$eq$$^{-1}$$
4
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

For the reaction A + B $$\to$$ C, we have the following data:

Initial concentration of A (in molarity) Initial concentration of B (in molarity) Rate (initial)
(Relevant unit)
1 10 100
1 1 1
10 1 10

The order of the reaction with respect to A and B are

A
Not possible to tell with the given data.
B
First order with respect to both A and B.
C
First order with respect to A and second order with respect to B.
D
Second order with respect to A and first order with respect to B.
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