Relevant Titles
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CBSE Class 11 Chemistry MCQs on Hydrocarbons – Chapter 13 Practice Test
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NCERT-Based Class 11 Chemistry Hydrocarbons MCQ Quiz with Answers
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Online Hydrocarbons Quiz for Class 11 Chemistry Students (CBSE)
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Free CBSE Online Test: Class 11 Chemistry MCQs on Hydrocarbons
Introduction
CBSE Class 11 Chemistry MCQs – Hydrocarbons are carefully curated to help students master Chapter 13 from the NCERT Class 11 Chemistry textbook. This online practice test focuses on key organic chemistry concepts, including alkanes, alkenes, alkynes, aromatic hydrocarbons, and their characteristic reactions.
Each question is designed to match CBSE Board Examination standards, helping learners strengthen conceptual understanding and improve speed and accuracy. These multiple-choice questions include detailed explanations, ensuring students grasp the reasoning behind each correct answer.
By attempting these NCERT-based Hydrocarbon MCQs, students can test their preparation, identify weak areas, and boost confidence before final exams. Whether you are revising for Class 11 Chemistry tests or preparing for competitive exams like NEET and JEE, this quiz will serve as a valuable self-assessment tool.
Start practicing now to master the fundamentals of Hydrocarbons and enhance your overall performance in CBSE Class 11 Chemistry.
Sample MCQs (with Answers and Explanations)
Q1. Which of the following is an alkane?
A) C₂H₄ B) C₂H₂ C) C₃H₈ D) C₆H₆
Answer: C) C₃H₈
Explanation: Alkanes are saturated hydrocarbons with single bonds. Propane (C₃H₈) fits the general formula CₙH₂ₙ₊₂.
Q2. The general formula for alkenes is:
A) CₙH₂ₙ₊₂ B) CₙH₂ₙ C) CₙH₂ₙ₋₂ D) CₙHₙ
Answer: B) CₙH₂ₙ
Explanation: Alkenes contain one carbon–carbon double bond and follow the formula CₙH₂ₙ.
Q3. Which reagent is used for the hydrogenation of alkenes?
A) Br₂ B) KMnO₄ C) Ni or Pt D) HCl
Answer: C) Ni or Pt
Explanation: Hydrogenation of alkenes requires a metal catalyst such as nickel (Ni), palladium (Pd), or platinum (Pt).
Q4. Benzene (C₆H₆) is classified as:
A) Alkane B) Alkene C) Alkyne D) Aromatic hydrocarbon
Answer: D) Aromatic hydrocarbon
Explanation: Benzene has a conjugated π-electron system satisfying Huckel’s rule (4n+2 π electrons), making it aromatic.
Q5. Which test is used to detect unsaturation in hydrocarbons?
A) Fehling’s test B) Baeyer’s test C) Tollen’s test D) Iodoform test
Answer: B) Baeyer’s test
Explanation: Baeyer’s test with dilute KMnO₄ decolorizes in the presence of C=C or C≡C bonds, confirming unsaturation.