Stephen reduction of a nitrile to an aldehyde

This type of question, asked 8 times: 4 May 2023 S1, 4 May 2023 S2, 10 May 2023 S1, 11 May 2023 S1, 10 May 2024 S2, 11 May 2024 S1, 19 Apr 2025 S2, 18 Apr 2026 S1. All 8 questions below, oldest first.

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Question 1
4 May 2023 S1
76 $Which of the following is Stephen reaction?$
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Question 2
4 May 2023 S2
82 $\xrightarrow{\text{HCl/SnCl}_2} A \xrightarrow{H_3O^+} B + NH_4Cl$
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Question 3
10 May 2023 S1
73 $R\text{-}C\equiv N \xrightarrow{\text{SnCl}_2/\text{HCl}} A \xrightarrow{\text{H}_3\text{O}^+} B$
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Question 4
11 May 2023 S1
79 $Which reagent from following is used for preparation of aliphatic aldehyde from nitriles?$
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Question 5
10 May 2024 S2
93 $Identify the product obtained when benzonitrile is reduced by stannous chloride in presence of hydrochloric acid followed by acid hydrolysis.$
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Question 6
11 May 2024 S1
65 $Benzonitrile on reduction with stannous chloride in presence of hydrochloric acid followed by acid hydrolysis forms:$
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Question 7
19 Apr 2025 S2
53 $Benzonitrile on reduction with stannous chloride in presence of hydrochloric acid followed by acid hydrolysis forms,$
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Question 8
18 Apr 2026 S1
40 $\xrightarrow{\mathrm{SnCl_2, HCl}} \mathrm{A} \xrightarrow{\mathrm{H_3O^+}} \mathrm{B + NH_4Cl}$
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Stephen reduction of a nitrile to an aldehyde

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