Chemistry · 2026
JEE Main · 2 April 2026, Shift 2 · Q57
Consider the reaction aX → bY, for which the rate constant at 30^° C is 1 × 10^-3 mol^-1 Ls^-1. Which of the following statements are true? A. When…
Consider the reaction $\displaystyle \mathrm{aX} \rightarrow \mathrm{bY}$, for which the rate constant at $\displaystyle 30^{\circ} \mathrm{C}$ is $\displaystyle 1 \times 10^{-3} \mathrm{~mol}^{-1} \mathrm{Ls}^{-1}$. Which of the following statements are true ?
A. When concentration of ' $\displaystyle X$ ' is increased to four times, the rate of reaction becomes $\displaystyle 16$ times.
B. The reaction is a second order reaction.
C. The half-life period is independent of the concentration of X.
D. Decomposition of $\displaystyle \mathrm{N}_2 \mathrm{O}_5$ is an example of the above reaction.
E.
is valid for the above reaction.
Choose the correct answer from the options given below :
Official answer
From NTA’s final answer key for this paper.
(1)
A and B Only
More from Chemical Kinetics
- Decomposition of a hydrocarbon follows the equation k=(5.5 × 10^11 s^-1) e^((-28000 K)/T). The activation…2026
- Consider the first order reaction R → P. The fraction of molecules decomposed in the given first order…2026
- t_100 % is the time required for the 100 % completion of the reaction while t_1 / 2 is the time required for…2026
- Given below are two statements: R=8.314 J K^-1 mol^-1 and 1 cal=4.2 J Statement I: When Ea=12.6 kcal / mol,…2026
- First order gas phase reaction A → B+C p_i= initial pressure of gas A, p_t= total pressure of the reaction…2026
- Consider the given graph showing variation of reactant concentration with time. Three different reactions…2026
- Consider the following gas phase reaction being carried out in a closed vessel at 25^° C. 2 A( g) → 4 B(…2026
- For a first order reaction A → B x= ____ min. (Nearest integer)2026
JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.