Molecularity of reaction - Practice Questions & MCQ
Edited By admin | Updated on Sep 18, 2023 18:35 AM | #JEE Main
Quick Facts
-
Molecularity of Reaction is considered one the most difficult concept.
-
8 Questions around this concept.
Solve by difficulty
EASYA reaction involving two different reactants can never be
Identify the correct statement.
Higher molecularity (>3) reactions are rare due to:
JEE Main Memory Based Ques & Sol's: Jan 23: Shift-2 | Shift-1 | Jan 22: Shift-2 | Shift-1 | All Shift
JEE Main 2026: Admit Card Link | Rank Predictor | College Predictor | Live Analysis (Jan 23- Shift 2)
JEE Main Sample Papers: Physics | Chemistry | Maths | Top 30 Repeated Questions
JEE Main QP & Mock: PYQ's (10 Years) | Chapter Wise PYQs | Mock Test Series
In the following questions two or more options may be correct.
For a complex reaction ______________.
(i) order of an overall reaction is the same as molecularity of the slowest step.
(ii) order of an overall reaction is less than the molecularity of the slowest step.
(iii) order of an overall reaction is greater than molecularity of the slowest step.
(iv) molecularity of the slowest step is never zero or non-integer.
Concepts Covered - 1
Molecularity of Reaction
The number of reacting species (atoms, ions or molecules) taking part in an elementary reaction which must collide simultaneously in order to bring about a chemical reaction is Molecularity.
Description:
$\mathrm{NH}_4 \mathrm{NO}_2 \rightarrow \mathrm{~N}_2+2 \mathrm{H}_2 \mathrm{O}$ (unimolecular)
$\mathrm{H}_2+\mathrm{I}_2 \rightarrow 2 \mathrm{HI}$ (bimolecular)
$2 \mathrm{NO}+\mathrm{O}_2 \rightarrow 2 \mathrm{NO}_2$ (trimolecular)
Molecularity is the theoretical concept. It cannot be zero/non-integer
Study it with Videos
Molecularity of Reaction"Stay in the loop. Receive exam news, study resources, and expert advice!"
Get Answer to all your questions
B.Tech/B.Arch Admissions OPEN
Among top 100 Universities Globally in the Times Higher Education (THE) Interdisciplinary Science Rankings 2026
Amrita University B.Tech 2026
ApplyRecognized as Institute of Eminence by Govt. of India | NAAC ‘A++’ Grade | Upto 75% Scholarships | Application Deadline: 15th Jan
UPES B.Tech Admissions 2026
ApplyRanked #43 among Engineering colleges in India by NIRF | Highest Package 1.3 CR , 100% Placements
Chandigarh University Admissions 2026
ApplyNAAC A+ Accredited | Among top 2% Universities Globally (QS World University Rankings 2026)
Manav Rachna-B.Tech Admissions 2026
ApplyNAAC A++ Grade | Recognized as Category-1 Deemed to be University by UGC | 41,000 + Alumni Imprints Globally
Jain University B.Tech Admissions 2026
Apply98% Placement Record | Highest CTC 81.25 LPA | NAAC A++ Accredited | Ranked #62 in India by NIRF Ranking 2025 | JEE & JET Scores Accepted