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Alkyl halide with KCN, AgCN, KNO2 or AgNO2: reagent or product (nitrile, isocyanide, nitrite, nitroalkane)

This type of question, asked 10 times: 9 May 2024 S1, 10 May 2024 S1, 11 May 2024 S2, 13 Apr 2026 S1, 16 Apr 2026 S2, 19 Apr 2026 S1, 20 Apr 2026 S1, 13 May 2026 S1, 15 May 2026 S1, 19 May 2026 S1. All 11 questions below, oldest first.

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  1. Question 1

    9 May 2024 S1

    68
    Identify the reagent A in the following conversion: Alkyl halide →A\xrightarrow{A} Alkyl nitrite

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  2. Question 2

    10 May 2024 S1

    61
    Identify compound Y in the following reaction: C2H5Cl+Y→ΔC2H5CN\text{C}_2\text{H}_5\text{Cl}+Y\xrightarrow{\Delta}\text{C}_2\text{H}_5\text{CN}

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  3. Question 3

    11 May 2024 S2

    68
    Identify 'A' and 'B' in the following reaction. CH3Br→AgNO2A→Sn/HClB\text{CH}_3\text{Br} \xrightarrow{\text{AgNO}_2} A \xrightarrow{\text{Sn/HCl}} B

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  4. Question 4

    13 Apr 2026 S1

    44
    Which from following reagents is used to prepare alkyl isocyanides from RX?

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  5. Question 5

    16 Apr 2026 S2

    36
    What is the product P obtained in following reaction? CH3CH2Br+AgCN(alc)→P\mathrm{CH_3CH_2Br + AgCN_{(alc)} \rightarrow P}

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  6. Question 6

    19 Apr 2026 S1

    37
    Identify reagent B in following reaction. R−X→B\mathrm{R - X \xrightarrow{B}} Nitroalkane

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  7. Question 7

    20 Apr 2026 S1

    39
    Which reagent is used to convert Alkyl halide into Alkyl nitrite ?

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  8. Question 8

    13 May 2026 S1

    37
    Which of the following compounds is obtained when potassium cyanide reacts with alkyl halide?

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  9. Question 9

    15 May 2026 S1

    36
    Which of the following compounds is obtained when alkyl halides reacted with silver nitrite?

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  10. Question 10

    19 May 2026 S1

    44
    Identify the product of reaction between alcoholic silver nitrite and ethyl bromide.

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  11. Question 11

    19 May 2026 S1

    42
    When R-X is treated with KCN (alcoholic, heat), find the type of attack found, when the major product is formed in this reaction?

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