NEETChemistryHydrocarbons
Match List-I with List-II. List-I (Alkane) List-II (Number of structurally isomeric monochloro products) (A) 2,2-Dimethylpropane (I) 1 (B) 2,3-Dimethylbutane (II) 2 (C) n -Pentane (III) 3 (D) 2-Methylbutane (IV) 4 Choose the correct answer from the options given below:
Options
- A(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
- B(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
- C(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
- D(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Correct answer
B. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
Step-by-step solution
The number of structurally isomeric monochloro products depends on the number of non-equivalent hydrogen atoms in the alkane. (A) 2,2-Dimethylpropane (neopentane) has 12 equivalent primary hydrogen atoms. It gives 1 monochloro product. (B) 2,3-Dimethylbutane has two sets of equivalent hydrogens (12 primary, 2 tertiary). It gives 2 monochloro products. (C) n -Pentane has three sets of equivalent hydrogens (C-1/C-5, C-2/C-4, and C-3). It gives 3 monochloro products. (D) 2-Methylbutane (isopentane) has four sets of eq