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Indian Navy AA (Artificer Apprentice) Named Reactions — practice questions

Explore 4 free Named Reactions questions in Indian Navy AA (Artificer Apprentice) 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 1–4 of 4.

The reactive electrophile in the Reimer–Tiemann reaction isRead the answer and worked solution →Match each named reactionRead the answer and worked solution →Which reaction is being described?Read the answer and worked solution →Which one does NOT belong?Read the answer and worked solution →

Worked practice questions

The reactive electrophile in the Reimer–Tiemann reaction is

  1. $Cl^-$
  2. $OH^-$
  3. Dichlorocarbene $:CCl_2$
  4. $CHCl_3$ itself
Show answer and solution

Correct answer: C. Dichlorocarbene $:CCl_2$

$CHCl_3 + OH^- \to :CCl_2 + Cl^- + H_2O$. The carbene attacks the ortho carbon of phenoxide. Subsequent hydrolysis of the geminal dichloride gives $-CHO$.

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Match each named reaction

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Matching pairs
  1. Left
    Williamson
    Right
    Makes an ether from an alkoxide
  2. Left
    Kolbe
    Right
    Puts a COOH group onto phenol
  3. Left
    Reimer-Tiemann
    Right
    Puts a CHO group onto phenol
  4. Left
    Cannizzaro
    Right
    Disproportionates an aldehyde with no alpha H
Instructions
Tap a reaction on the left, then tap what it makes or does.
_Source: syllabus Chemistry Alcohols Phenols and Ethers, Alcohols_

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Which reaction is being described?

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Items
  1. Item
    No alpha hydrogen
    Category
    Cannizzaro
  2. Item
    Gives alcohol+acid
    Category
    Cannizzaro
  3. Item
    Has alpha hydrogen
    Category
    Aldol
  4. Item
    Beta hydroxy C=O
    Category
    Aldol
  5. Item
    C=O becomes CH2
    Category
    Wolff-Kishner
  6. Item
    Uses hydrazine
    Category
    Wolff-Kishner
Categories
  1. Item
    Cannizzaro
  2. Item
    Aldol
  3. Item
    Wolff-Kishner
Instructions
Tap a clue, then tap the reaction it points to.
_Source: syllabus Chemistry Aldehydes Ketones Carboxylic Acids, Aldehydes_

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More Chemistry topics

Chemical EquilibriumAlcohols Phenols EthersAlkenesOrganic ChemistryPolymersAtoms and MoleculesClassification of ElementsS Block Elements