MCQs of Chemical Kinetics

Showing 221 to 228 out of 228 Questions

221.

What is the requirement for any chemical reaction to occur ?

(a)	Collision from proper direction
(b)	Threshold energy
(c)	Collision between molecules
(d)	All of the above

222.

Which principle is not known for the study of chemical kinetics ?

223.

t_{99.9 %}

= _____

times \times t_{\frac{1}{2}}

224.

Which equation is correct for the reaction,

$N_{2 (g)} + 3 H_{2 (g)} ⇌ 2 {NH}_{3 (g)}$

225.

For the reaction

3 A \to 2 B

, what will be the reaction rate with reference to B ?

226.

What is correct for the reaction,

$2 N_{2} O_{5} ⇌ 2 N_{2} O_{4} + O_{2}$ ?

(a)	The reaction is bimolecular and of second order.
(b)	The reaction is unimolecular and of first order.
(c)	The reaction is bimolecular and of first order.
(d)	The reaction is bimolecular and of zero order.

227.

The value of intercept in Arrhenius graph is _____ .

228.

For first order reaction the graph of

\log (a - x) \to time (t)

obtained is a straight line. What will be the value of negative slope ?

Showing 221 to 228 out of 228 Questions