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Indian Navy SSR Named Reactions — practice questions

Explore 5 free Named Reactions questions in Indian Navy SSR Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Named Reactions questions and exercises with answers

Showing questions 1–5 of 5.

The product of the Hunsdiecker reaction on $CH_3CH_2COOAg$ with $Br_2/CCl_4$ isRead the answer and worked solution →**Williamson's synthesis** of ethers couples an alkoxide withRead the answer and worked solution →The **Fittig reaction** couples two molecules ofRead the answer and worked solution →In the **Etard reaction**, toluene is oxidised to benzaldehyde byRead the answer and worked solution →The **Hell–Volhard–Zelinsky (HVZ) reaction** converts a carboxylic acid (with $\alpha$-H) to an $\alpha$-halo acid usingRead the answer and worked solution →

Worked practice questions

The product of the Hunsdiecker reaction on $CH_3CH_2COOAg$ with $Br_2/CCl_4$ is

  1. $CH_3CH_2COBr$
  2. $CH_3Br$
  3. $CH_3CH_2Br$
  4. $CH_3CH_2CH_2Br$
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Correct answer: C. $CH_3CH_2Br$

Hunsdiecker loses one carbon (as $CO_2$): $CH_3CH_2COOAg + Br_2 \to CH_3CH_2Br + CO_2 + AgBr$.

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**Williamson's synthesis** of ethers couples an alkoxide with

  1. An alkyl halide
  2. An alcohol directly
  3. An aldehyde
  4. A carboxylic acid
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Correct answer: A. An alkyl halide

$RO^-Na^+ + R'X \to ROR' + NaX$. The alkoxide is the nucleophile, the alkyl halide is the electrophile.

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The **Fittig reaction** couples two molecules of

  1. aryl halide with Mg in dry ether
  2. alcohol with Na
  3. alkyl halide with Na in dry ether
  4. aryl halide with Na in dry ether
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Correct answer: D. aryl halide with Na in dry ether

$2\,ArX + 2\,Na \to Ar-Ar + 2\,NaX$. Couples two aryl halides to a biaryl. Wurtz couples two alkyl halides Wurtz–Fittig couples one aryl + one alkyl.

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More Chemistry topics

Organic ChemistryAlkenesAlcohols Phenols EthersPolymersChemical Equilibriump-Block ElementsThe p-Block ElementsAtoms and Molecules