Question

Match List - I with List - II : List - I (Chemicals)
(a) Alcoholic potassium hydroxide
(b) Pd/BaSO₄
(c) BHC (Benzene hexachloride)
(d) Polyacetylene List - II (Use/Preparation/Constituent)
(i) electrodes in batteries
(ii) obtained by addition reaction
(iii) used for β-elimination reaction
(iv) Lindlar's Catalyst

• A. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
• B. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
• C. (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
• D. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

Hint:

Lindlar's catalyst reduces alkynes to 'cis' alkenes only.

Answer 1

The Correct Option is D

Step 1: **Alc. KOH** is a strong base used for dehydrohalogenation (**$\beta$-elimination**).
Step 2: **Pd/BaSO₄** (poisoned with sulfur or quinoline) is **Lindlar's Catalyst**.
Step 3: **BHC** (Gammaxene) is produced by the **photo-addition** of $Cl_2$ to benzene.
Step 4: **Polyacetylene** is a conducting polymer used in specialized **electrodes**.