1
JEE Main 2020 (Online) 6th September Evening Slot
Numerical
+4
-0
The rate of a reaction decreased by 3.555
times when the temperature was changed
from 40oC to 30oC. The activation energy
(in kJ mol–1) of the reaction is _______.
Take; R = 8.314 J mol–1 K–1 ln 3.555 = 1.268
Take; R = 8.314 J mol–1 K–1 ln 3.555 = 1.268
Your input ____
2
JEE Main 2020 (Online) 4th September Evening Slot
Numerical
+4
-0
The number of molecules with energy greater
than the threshold energy for a reaction
increases five fold by a rise of temperature
from 27oC to 42oC. Its energy of activation in
J/mol is _____.
(Take ln 5 = 1.6094; R = 8.314 J mol–1 K–1)
(Take ln 5 = 1.6094; R = 8.314 J mol–1 K–1)
Your input ____
3
JEE Main 2020 (Online) 4th September Morning Slot
Numerical
+4
-0
If 75% of a first order reaction was completed
in 90 minutes, 60% of the same reaction would
be completed in approximately (in minutes)
_______.
(Take : log 2 = 0.30; log 2.5 = 0.40)
(Take : log 2 = 0.30; log 2.5 = 0.40)
Your input ____
4
JEE Main 2020 (Online) 9th January Evening Slot
Numerical
+4
-0
A sample of milk splits after 60 min. at 300 K
and after 40 min. at 400 K when the population
of lactobacillus acidophilus in it doubles. The
activa tion energy (in kJ/ mol) for this process
is closest to__________.
(Given, R = 8.3 J mol–1 K–1, $$\ln \left( {{3 \over 2}} \right) = 0.4$$, e–3 = 4.0)
(Given, R = 8.3 J mol–1 K–1, $$\ln \left( {{3 \over 2}} \right) = 0.4$$, e–3 = 4.0)
Your input ____
Questions Asked from Chemical Kinetics and Nuclear Chemistry (Numerical)
Number in Brackets after Paper Indicates No. of Questions
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