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9. Hydricarbon — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry9. Hydricarbon1 Mark
MCQ
A gas decolourises Bayer's reagent but does not react with Tollen's reagent, this gas is
  • ✓
    Ethene
  • B
    Ethyne
  • C
    Ethane
  • D
    Methane
✓

Answer

Correct option: A.
Ethene
a
The correct answer is - Ethene $\left( C _2 H _4\right)$ gas. Also, But-$1$-yne and But-$2$-yne are known for the same reactions.

Ammonical silver nitrate solution is also known as Tollen's reagent in chemical reaction studies.

These gases are known to decolourize aqueous bromine water. They also form a white precipitate when they react with aqueous ammoniacal silver nitrate solution.

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