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First Order Questions

Practice 4 First Order questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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4
Total Questions
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Easy
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3
Medium
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Hard
Practice by Exam:Chemistry(2)Mathematics(2)

About First Order — practice questions, PYQs & concepts

First Order is a frequently-tested topic on Chemistry, Mathematics. ExamTest.live currently lists 4 First Order questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

First Order weight in competitive exams

Across our First Order question bank, the largest sources are Chemistry (2) and Mathematics (2). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 0 easy First Order questions are available — build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right — the explanation often surfaces a faster approach you can reuse.

All First Order Questions(1–4 of 4)

Filter:
Q1mediummcqMathematicsMathematics Mock Test - 52026
0% accuracy
The curve satisfying the differential equation and passing through the point is:
Q2mediummcqChemistryNEET 20192026
0% accuracy
If the rate constant for a first order reaction is k, the time (t) required for the completion of 99% of the reaction is given by:
Q3mediummcqMathematicsMathematics Mock Test - 42026
100% accuracy
Solve the differential equation .
Q4hardmcqChemistryNEET 2020 E12026
The rate constant for a first order reaction is . The time required to reduce of the reactant to is:

Frequently Asked Questions

How many First Order questions are on ExamTest.live?▼
We have 4 First Order questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are First Order MCQs free?▼
Yes. All First Order questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include First Order questions?▼
First Order questions are commonly asked in Chemistry, Mathematics. You can filter by exam using the links above.
How do I practice First Order questions effectively?▼
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.