A chemical reaction in which the rate of reaction is…

Question

A chemical reaction in which the rate of reaction is directly proportional to the first power of the concentration of the reacting substance is called:

Select an answer

Question & Answer (English)

A chemical reaction in which the rate of reaction is directly proportional to the first power of the concentration of the reacting substance is called:

  1. second order reaction
  2. first order reaction — Correct Answer
  3. zero order reaction
  4. third order reaction
Explanation:

Order of Reaction refers to the power to which the concentration of a reactant is raised in the rate law equation.

  • If the rate of reaction depends on the first power of the concentration of a single reactant, it is called a first-order reaction.
  • Mathematically, Rate $= k[A]^1$.
  • Example: Radioactive decay is a first-order process.

प्रश्न एवं उत्तर (हिंदी)

एक रासायनिक अभिक्रिया जिसमें अभिक्रिया की दर (rate of reaction) अभिकारक की सांद्रता की प्रथम घात (first power) के सीधे समानुपाती होती है, कहलाती है:

  1. द्वितीय कोटि की अभिक्रिया (second order reaction)
  2. प्रथम कोटि की अभिक्रिया (first order reaction) — सही उत्तर
  3. शून्य कोटि की अभिक्रिया (zero order reaction)
  4. तृतीय कोटि की अभिक्रिया (third order reaction)
स्पष्टीकरण:

अभिक्रिया की कोटि (Order of Reaction) दर नियम समीकरण में अभिकारक की सांद्रता की घात को दर्शाती है।

  • यदि अभिक्रिया की दर किसी एक अभिकारक की सांद्रता की प्रथम घात (power of 1) पर निर्भर करती है, तो इसे प्रथम कोटि की अभिक्रिया कहा जाता है।
  • गणितीय रूप से: Rate $= k[A]^1$.
  • उदाहरण के लिए, रेडियोधर्मी क्षय (Radioactive decay) एक प्रथम कोटि की प्रक्रिया है।

📚 About this Topic — General Awareness

This multiple choice question is from General Awareness, General Awareness (2024), General Awareness (2024)-9, SSC CGL Tier-1 (PYQs). It has 4 options with a detailed explanation of the correct answer and is available in both English and Hindi (द्विभाषी). Practice more MCQs from General Awareness to strengthen your preparation.

Author Avatar
Anvi Classes

Anvi classes for Current Affairs, GK, and General Studies MCQs. Prepare for UPSC, SSC, and other competitive exams with our comprehensive quizzes.