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ICSE Class 10 Organic Chemistry — practice questions — page 5

Explore 138 free Organic Chemistry questions in ICSE Class 10 Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Organic Chemistry questions and exercises with answers

Showing questions 121–138 of 138.

Which condition promotes methane's substitution by chlorine?Read the answer and worked solution →One H atom of ethane is replaced by Cl. What organic product forms?Read the answer and worked solution →All four H atoms in CH4 are replaced by Cl. How many HCl form per CH4?Read the answer and worked solution →Which carbon skeleton is branched?Read the answer and worked solution →Which pair differs in double-bond position within the same carbon chain?Read the answer and worked solution →How many carbon atoms form benzene's ring?Read the answer and worked solution →How does pure liquid acetic acid normally appear?Read the answer and worked solution →What happens when liquid acetic acid is mixed with water?Read the answer and worked solution →Sufficient cooling of pure acetic acid produces what?Read the answer and worked solution →Aqueous ethanoic acid touches blue litmus paper. What occurs?Read the answer and worked solution →Ethanoic acid reacts with NaOH. Which products form?Read the answer and worked solution →The ester formed from ethanol and acetic acid has what typical smell?Read the answer and worked solution →How is an ethanol-acetic acid mixture gently warmed for esterification?Read the answer and worked solution →Calling ethanoic acid weak refers to which property in water?Read the answer and worked solution →Why is vinegar added when preserving pickles?Read the answer and worked solution →Acetic acid helps manufacture which material used in photographic film?Read the answer and worked solution →Dilute acetic acid is found in which household cleaning product?Read the answer and worked solution →Ethyl acetate made using acetic acid serves what role in inks and coatings?Read the answer and worked solution →

Worked practice questions

Which condition promotes methane's substitution by chlorine?

  1. Cooling in darkness
  2. Adding water in darkness
  3. Adding dilute alkali
  4. Exposure to sunlight
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Correct answer: D. Exposure to sunlight

Sunlight initiates the substitution of hydrogen in methane by chlorine.

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One H atom of ethane is replaced by Cl. What organic product forms?

  1. Chloroethene
  2. Chloroethane
  3. Chloromethane
  4. Dichloroethane
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Correct answer: B. Chloroethane

Replacing one hydrogen in C2H6 with chlorine gives C2H5Cl, chloroethane.

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All four H atoms in CH4 are replaced by Cl. How many HCl form per CH4?

  1. Four
  2. One
  3. Three
  4. Two
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Correct answer: A. Four

Each substitution removes one hydrogen as HCl, so replacing all four hydrogens forms four HCl molecules.

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More Chemistry topics

Periodic Table & Periodic PropertiesMetallurgyMole Concept and StoichiometryAnalytical ChemistryElectrolysisAcids, Bases and SaltsStudy of Compounds: hydrogen chloride, ammonia, nitric acid, sulphuric acidChemical Bonding