FBISE · Class 9

Class 9 Chemistry MCQs: Organic Chemistry

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Quick revision

Class 9 Chemistry MCQs Organic Chemistry are one of the fastest ways to improve your board exam performance — especially when you practice with purpose, revise weak concepts, and learn from explanations.

On Prepzy, you can practice 85 MCQs from “Organic Chemistry” in Chemistry for FBISE. Each question is designed to mirror the style, wording, and concept-testing approach used in Pakistani board papers.

Use this chapter page to revise definitions, formulas, and key ideas, then attempt the MCQs in small sets. Track patterns in your mistakes: is it a concept gap, a calculation error, or a misread statement? Fixing the pattern is what raises your score.

If you’re preparing for matric / SSC Part exams, focus on understanding the concept first, then speed. MCQs reward clarity — not memorization. A clear concept turns into fast correct answers.

What to focus on

  • Primary focus: Organic Chemistry concepts tested in Class 9 Chemistry
  • Practice with instant answer-checking to reduce repeated mistakes
  • Revise common definitions, units, and standard results before timed practice
  • Aim for accuracy first, then build speed with short quizzes

Study tips

  • Read the question stem first, then scan options for distractors (near-correct choices).
  • If the chapter is formula-heavy, write a mini-formula sheet and revise it before every attempt.
  • After each practice set, re-attempt only the wrong MCQs to convert weak areas into strengths.
  • Mix easy + medium MCQs for momentum, then finish with hard questions for exam readiness.

MCQs (sample)

Showing 25 questions from this chapter. For a full timed test, use “Start online test”.

  1. 1. What is a functional group in organic chemistry?

    • An atom or group of atoms that gives characteristic properties to organic compounds.
    • A type of hydrocarbon.
    • A molecule that contains only carbon and hydrogen.
    • A process that converts organic compounds into hydrocarbons.
    Answer & explanation

    Correct: An atom or group of atoms that gives characteristic properties to organic compounds.

    A functional group provides characteristic properties to a family of organic compounds.

  2. 2. What are hydrocarbons?

    • Compounds containing only carbon and hydrogen
    • Compounds containing oxygen and hydrogen
    • Compounds containing nitrogen
    • Compounds containing carbon and sulfur
    Answer & explanation

    Correct: Compounds containing only carbon and hydrogen

    Hydrocarbons are specifically defined as compounds containing only carbon and hydrogen.

  3. 3. What is the study of carbon-containing compounds called?

    • Organic chemistry
    • Inorganic chemistry
    • Biochemistry
    • Physical chemistry
    Answer & explanation

    Correct: Organic chemistry

    The study of carbon-containing compounds and their properties is called organic chemistry.

  4. 4. What is a homologous series?

    • A series of compounds differing by CH2 group
    • A group of unrelated compounds
    • A series of inorganic compounds
    • A group of compounds with different functional groups
    Answer & explanation

    Correct: A series of compounds differing by CH2 group

    A homologous series is defined as a series of related compounds in which any two adjacent molecules differ by a CH2 group.

  5. 5. What is the maximum number of bonds that carbon can form with other atoms?

    • Four
    • Two
    • Three
    • Five
    Answer & explanation

    Correct: Four

    Carbon has four bonding electrons in its valence shell, allowing it to form four bonds.

  6. 6. What are the two main groups of organic compounds?

    • Open chain and Closed chain compounds
    • Acyclic and Aromatic compounds
    • Cyclic and Aliphatic compounds
    • Straight chain and Branched chain compounds
    Answer & explanation

    Correct: Open chain and Closed chain compounds

    Organic compounds are broadly divided into open chain (acyclic) and closed chain (cyclic) groups.

  7. 7. What is a structural formula?

    • A formula that describes the arrangement of atoms in a molecule
    • A formula that shows only the molecular weight
    • A formula that represents only the chemical reactions
    • A formula that lists all elements in alphabetical order
    Answer & explanation

    Correct: A formula that describes the arrangement of atoms in a molecule

    A structural formula describes how atoms are arranged in a molecule.

  8. 8. Which of the following compounds is an example of a haloalkane?

    • Chloromethane
    • Methanol
    • Ethanol
    • Diethyl ether
    Answer & explanation

    Correct: Chloromethane

    Chloromethane is an example of a haloalkane as it contains a halogen atom.

  9. 9. What are saturated hydrocarbons also known as?

    • Alkenes
    • Alkynes
    • Alkanes
    • Benzenes
    Answer & explanation

    Correct: Alkanes

    Saturated hydrocarbons are also called alkanes.

  10. 10. Which of the following is considered an inorganic substance?

    • Carbon dioxide
    • Glues
    • Synthetic fibers
    • Drugs
    Answer & explanation

    Correct: Carbon dioxide

    Low carbon compounds such as carbon dioxide are considered inorganic substances according to the content.

  11. 11. Which of the following is an example of a homologous series?

    • Alkanes
    • Ionic compounds
    • Salts
    • Metals
    Answer & explanation

    Correct: Alkanes

    Alkanes, which include compounds like methane and ethane, are an example of a homologous series.

  12. 12. What is the term for carbon's ability to form long chains, branched chains, and rings?

    • Catenation
    • Isomerism
    • Resonance
    • Hybridization
    Answer & explanation

    Correct: Catenation

    The self-linking ability of carbon is called catenation.

  13. 13. Which type of organic compounds contains an open chain of carbon atoms?

    • Closed chain compounds
    • Open chain compounds
    • Acyclic compounds
    • Cyclic compounds
    Answer & explanation

    Correct: Open chain compounds

    Open chain compounds consist of an open chain of carbon atoms linked in a linear pattern.

  14. 14. Which of the following compounds has the molecular formula C2H6O?

    • Ethanol
    • Propanoic acid
    • Butane
    • Hexane
    Answer & explanation

    Correct: Ethanol

    Ethanol is one of the compounds with the molecular formula C2H6O.

  15. 15. What functional group characterizes alcohols?

    • -OH
    • -C=O
    • -COOH
    • -NH2
    Answer & explanation

    Correct: -OH

    Alcohols are characterized by the hydroxyl group (-OH) attached to a hydrocarbon chain.

  16. 16. Which is the simplest alkane?

    • Butane
    • Propane
    • Ethane
    • Methane
    Answer & explanation

    Correct: Methane

    Methane is recognized as the simplest alkane.

  17. 17. Which of the following is NOT mentioned as an industrial organic chemical product?

    • Plastics
    • Soaps
    • Metals
    • Dyes
    Answer & explanation

    Correct: Metals

    Metals are not mentioned as an industrial organic chemical product in the content provided.

  18. 18. How do adjacent members of a homologous series differ?

    • By CH2 group
    • By COOH group
    • By OH group
    • By NH2 group
    Answer & explanation

    Correct: By CH2 group

    Adjacent members of a homologous series differ by a CH2 unit.

  19. 19. Which of the following elements can also form chains, although only short ones?

    • Silicon
    • Oxygen
    • Nitrogen
    • Phosphorus
    Answer & explanation

    Correct: Silicon

    Silicon and a few other elements can form chains, but they are only short ones compared to carbon.

  20. 20. Which is an example of a branched chain compound?

    • Butane
    • Pentane
    • Iso-Butane
    • Propane
    Answer & explanation

    Correct: Iso-Butane

    Iso-Butane is a branched chain compound where carbon atoms are attached to the sides of the chain.

  21. 21. In dimethyl ether, the oxygen atom is bonded to how many carbon atoms?

    • Two
    • One
    • Three
    • Four
    Answer & explanation

    Correct: Two

    In dimethyl ether, the oxygen atom is bonded to two carbon atoms.

  22. 22. Which statement is true regarding functional groups?

    • They only determine the physical properties of compounds.
    • They serve as a basis for naming organic compounds.
    • They have no effect on the classification of compounds.
    • They are all identical for different families of compounds.
    Answer & explanation

    Correct: They serve as a basis for naming organic compounds.

    Functional groups serve as a basis for naming and classifying organic compounds.

  23. 23. What is the general formula for alkanes?

    • CnH2n
    • CnH2n+2
    • CnH2n-2
    • CnHn
    Answer & explanation

    Correct: CnH2n+2

    The general formula for alkanes is CnH2n+2, where n is the number of carbon atoms.

  24. 24. What essential elements are combined with carbon in organic compounds?

    • H, O, N, S, P, and halogens
    • K, Na, Cl, and Fe
    • Cu, Zn, I, and Br
    • Ar, Ca, Mg, and He
    Answer & explanation

    Correct: H, O, N, S, P, and halogens

    Carbon in organic compounds is combined with H, O, N, S, P, and halogens as stated in the content.

  25. 25. What is the general formula for alkanes in a homologous series?

    • CnH2n+2
    • CnH2n
    • CnH2n-2
    • CnH2n+1OH
    Answer & explanation

    Correct: CnH2n+2

    The general formula for alkanes is CnH2n+2.

FAQs

Are these Class 9 Chemistry MCQs Organic Chemistry aligned with FBISE?

Yes. The MCQs are organized chapter-wise for FBISE and designed to match board exam patterns. If your teacher has added custom MCQs, they will also appear here.

How many MCQs should I practice from “Organic Chemistry” each day?

A good daily target is 20–40 MCQs with full review of mistakes. If you’re short on time, do 15 MCQs but read explanations carefully.

What’s the best way to revise this chapter before an exam?

Revise the chapter summary, list your weak sub-topics, then practice MCQs in timed sets. Re-attempt wrong questions after a short break to lock in learning.

Can I take an online test for this chapter?

Yes. Start a chapter quiz to simulate an online test. Use it to improve speed and accuracy under time pressure.

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