1

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+4

-1

N

_{2}O_{5}decomposes to NO_{2}and O_{2}and follows first order kinetics. After 50 minutes, the pressure inside the vessel increases from 50 mmHg to 87.5 mmHg. The pressure of the gaseous mixture after 100 minute at constant temperature will be :2

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MCQ (Single Correct Answer)

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-1

The rate of a reaction quadruples when the temperature changes from 300 to 310 K. The activation energy of this reaction is :

(Assume activation energy and preexponential factor are independent of temperature; ln 2 = 0.693; R = 8.314 J mol

(Assume activation energy and preexponential factor are independent of temperature; ln 2 = 0.693; R = 8.314 J mol

^{−1}K^{−1})3

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MCQ (Single Correct Answer)

+4

-1

The rate of a reaction A doubles on increasing the temperature from 300 to 310 K. By how much, the temperature of reaction B should be Increased from 300 K so that rate doubles if activation energy of the reaction B is twice to that of reaction A.

4

JEE Main 2017 (Offline)

MCQ (Single Correct Answer)

+4

-1

Two reactions R

(R = 8.314 J mol

_{1}and R_{2}have identical pre-exponential factors. Activation energy of R_{1}exceeds that of R_{2}by 10 kJ mol^{–1}. If k_{1}and k_{2}are rate constants for reactions R_{1}and R_{2}respectively at 300 K, then ln(k_{2}/k_{1}) is equal to :(R = 8.314 J mol

^{–1}K^{–1})Questions Asked from Chemical Kinetics and Nuclear Chemistry (MCQ (Single Correct Answer))

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