Organic Chemistry II — Important Questions
ICSE · Class 10 · Chemistry
42 important questions from Organic Chemistry II for ICSE Class 10 Chemistry, with answers. Includes multiple correct and multiple choice questions.
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See them allImportant Questions from Organic Chemistry II
Which of the following are methods to prepare methane in laboratory?
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Decarboxylation of sodium acetate with soda lime, Reduction of methyl iodide
Methane is prepared by decarboxylation of sodium acetate (CH3COONa + NaOH → CH4 + Na2CO3) and by reduction of methyl iodide. Calcium carbide produces acetylene, not methane.
Which test is used to detect unsaturation in organic compounds?
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Baeyer's test
Baeyer's test uses cold alkaline KMnO4 solution. Unsaturated compounds decolorize the purple color of KMnO4, indicating presence of C=C or C≡C bonds.
Denatured alcohol contains:
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Ethyl alcohol + methyl alcohol + pyridine
Denatured alcohol is ethyl alcohol made unfit for drinking by adding poisonous substances like methyl alcohol, pyridine, and coloring matter.
Which of the following reactions occur with ethylene?
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Addition of hydrogen, Addition of halogens, Polymerization
Ethylene undergoes addition reactions due to C=C double bond: adds H2 to form ethane, adds Cl2/Br2 to form dihalides, and polymerizes to form polythene. Substitution occurs in saturated compounds.
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