1
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25
Under the same reaction conditions, initial concentration of 1.386 mol dm$$-$$3 of a substance becomes half in 40 s and 20 s through first-order and zero-order kinetics respectively. Ratio $$\left( {{{{k_1}} \over {{k_0}}}} \right)$$ of the rate constants for first-order (k1) and zero-order (k0) of the reactions is
2
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25
2.5 mL 0.4 M weak monoacidic base (Kb = 1 $$\times$$ 10$$-$$12 at 25$$^\circ$$C) is titrated with 2/15 M HCl in water at 25$$^\circ$$C. The concentration of H+ at equivalence point is (Kw = 1 $$\times$$ 10$$-$$14, at 25$$^\circ$$C)
3
WB JEE 2020
MCQ (Single Correct Answer)
+2
-0.5
For a reaction 2A + B $$ \to $$ P, when concentration of B alone is doubled, t1/2 does not change and when concentrations of both A and B is doubled, rate increases by a factor of 4. The unit of rate constant is,
4
WB JEE 2019
MCQ (Single Correct Answer)
+1
-0.33
Consider the following two first order reactions occurring at 298 K with same initial concentration of A :
(1) A $$\to$$ B; rate constant, k = 0.693 min$$-$$1
(2) A $$\to$$ C; half-life, t1/2 = 0.693 min
Choose the correct option.
(1) A $$\to$$ B; rate constant, k = 0.693 min$$-$$1
(2) A $$\to$$ C; half-life, t1/2 = 0.693 min
Choose the correct option.
Questions Asked from Chemical Kinetics (MCQ (Single Correct Answer))
Number in Brackets after Paper Indicates No. of Questions
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