1
MHT CET 2021 20th September Morning Shift
+1
-0

Instantaneous rate of a reaction is $$- {1 \over 2}{{d[x]} \over {dt}} = - {{d[y]} \over {dt}} = {1 \over 2}{{d[z]} \over {dt}}$$, identify the reaction.

A
$$x - 2y \to 2z$$
B
$$2x + y \to 2z$$
C
$$2z + y \to 2x$$
D
$$2x - 2y \to z$$
2
MHT CET 2021 20th September Morning Shift
+1
-0

Half life for a first order reaction is 6.93 hour. What is the time required for 80% completion of the reaction?

A
12 hours
B
18 hours
C
6 hours
D
16 hours
3
MHT CET 2020 16th October Evening Shift
+1
-0

A first order reaction has a rate constant 0.00813 min$$^{-1}$$. How long will it take for 60% completion?

A
56.35 min
B
98.7 min
C
62.77 min
D
112.7 min
4
MHT CET 2020 16th October Evening Shift
+1
-0

What is the value of rate constant of first order reaction, if it takes 15 minutes for consumption of $$20 \%$$ of reactants?

A
$$1.38 \times 10^{-2} \mathrm{~min}^{-1}$$
B
$$1.48 \times 10^{-2} \mathrm{~min}^{-1}$$
C
$$1.07 \times 10^{-2} \mathrm{~min}^{-1}$$
D
$$1.84 \times 10^{-2} \mathrm{~min}^{-1}$$
EXAM MAP
Medical
NEETAIIMS