MHT CET 2026 17th April Evening Shift | Chemical Kinetics Question 19 | Chemistry

For the reaction $2\text{NOBr}_{(g)} \rightarrow 2\text{NO}_{(g)} + \text{Br}_{2(g)}$ rate law is $r = k[\text{NOBr}]^2$, if rate constant is $1 \cdot 62 \text{ mol dm}^{-3}\text{ s}^{-1}$ and concentration of NOBr is $2 \times 10^{-3} \text{ mol L}^{-1}$. What is the rate of reaction ?

$4 \cdot 05 \times 10^{-5} \text{ mol dm}^{-3}\text{s}^{-1}$

$6 \cdot 48 \times 10^{-6} \text{ mol dm}^{-3}\text{s}^{-1}$

$2 \cdot 12 \times 10^{-5} \text{ mol dm}^{-3}\text{s}^{-1}$

$8 \cdot 63 \times 10^{-6} \text{ mol dm}^{-3}\text{s}^{-1}$

MHT CET 2026 17th April Evening Shift

MCQ (Single Correct Answer)

-0

In first order reaction 20 millimole of reactant is reduced to 10 millimole in $1 \cdot 151$ minute. Find rate constant.

$0 \cdot 6023 \text{ minute}^{-1}$

$6 \cdot 120 \text{ minute}^{-1}$

$0 \cdot 3010 \text{ minute}^{-1}$

$2 \cdot 010 \text{ minute}^{-1}$

MHT CET 2026 17th April Evening Shift

MCQ (Single Correct Answer)

-0

Which of the following is an example of second order reaction ?

$2\,\text{H}_2\text{O}_{2(l)} \rightarrow 2\text{H}_2\text{O}_{(l)} + \text{O}_{2(g)}$

$\text{CH}_3\text{CHO}_{(g)} \rightarrow \text{CH}_{4(g)} + \text{CO}_{(g)}$

$2\,\text{NO}_{2(g)} + \text{F}_{2(g)} \rightarrow 2\text{NO}_2\text{F}_{(g)}$

$2\,\text{NO}_{(g)} + 2\text{H}_{2(g)} \rightarrow \text{N}_{2(g)} + 2\text{H}_2\text{O}_{(l)}$

MHT CET 2026 17th April Morning Shift

MCQ (Single Correct Answer)

-0

Half life of zero order reaction is 1 hour. If initial concentration of reactant is 2.0 mol $\text{L}^{-1}$, find the time required to decrease concentration from 0.50 to 0.25 mol $\text{L}^{-1}$

$0.25$ hour

$0.50$ hour

$1.00$ hour

$4.00$ hour

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Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry

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Periodic Table and Periodicity Chemical Bonding and Molecular Structure Metallurgy Hydrogen and It's Compounds s-Block Elements p-Block Elements d and f Block Elements Coordination Compounds Environmental Chemistry

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IUPAC Nomenclatures General Organic Chemistry Isomerism Hydrocarbons Haloalkanes and Haloarenes Alcohol, Phenols and Ethers Aldehyde and Ketone Carboxylic Acids and Its Derivatives Compounds Containing Nitrogen Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry