Q58.Products A and B formed in the following reactions are respectively: JEE Main 2018 (16 Apr Online) JEE Main Previous Year Paper (1) (2) (3) (4)
What This Question Tests
This question involves two reaction sequences. The first forms a nitrile by SN2 reaction. The second sequence involves the hydrolysis of the nitrile to a carboxylic acid and reduction of an aldehyde to an alcohol. Product A is pentanenitrile and Product B is pentanoic acid.
Concepts Tested
Formulas Used
R-X + NaCN → R-CN + NaX
R-CN + H₃O⁺/heat → R-COOH + NH₄⁺
📚 NCERT Sections This Tests
8.17 — Complete Each Synthesis By Giving Missing Starting Material, Reagent Or Products
Chemistry Class 12 · Chapter 8
8.17 Complete each synthesis by giving missing starting material, reagent or products
6.22 — What Happens When
Chemistry Class 12 · Chapter 6
6.22 What happens when (i) n-butyl chloride is treated with alcoholic KOH, (ii) bromobenzene is treated with Mg in the presence of dry ether, (iii) chlorobenzene is subjected to hydrolysis, (iv) ethyl chloride is treated with aqueous KOH, (v) methyl bromide is treated with sodium in the presence of dry ether, (vi) methyl chloride is treated with KCN? Answers to Some Intext Questions 6.1 6.2 (i) H2SO4 cannot be used along with KI in the conversion of an alcohol to an alkyl iodide as it converts KI to corresponding acid, HI which is then oxidised by it to I2. 6.3 (i) ClCH2CH2CH2Cl (ii) ClCH2CHClCH3 (iii) Cl2CHCH2CH3 (iv) CH3CCl2CH3 191 Haloalkanes and Haloarenes Reprint 2025-26
7.6 — Give Structures Of The Products You Would Expect When Each Of The
Chemistry Class 12 · Chapter 7
7.6 Give structures of the products you would expect when each of the following alcohol reacts with (a) HCl –ZnCl2 (b) HBr and (c) SOCl2. (i) Butan-1-ol (ii) 2-Methylbutan-2-ol
📋 Question Details
- Chapter
- Haloalkanes & Haloarenes
- Topic
- Substitution and Elimination Reactions
- Year
- 2018
- Shift
- 16 Apr Online
- Q Number
- Q58
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 10: Haloalkanes and Haloarenes
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