Match List-I with List-II and select the correct answer:

List-I (Industrial Process)	List-II (Industry)
a. Cracking	1. Rubber
b. Smelting	2. Petroleum
c. Hydrogenation	3. Copper
d. Vulcanization	4. Edible Fats

A. aluminium B. sodium C. potassium D. lithium

A. Cu B. Al C. Au D. Zn

A. Calcium Carbonate B. Calcium Carbonate & Magnesium Carbonate C. Calcium Chloride D. Calcium Sulphate

A. chromium and nickel combine with iron B. chromium forms an oxide layer and protects iron from rusting C. nickel present in it, does not rust D. iron forms a hard chemical compound with chromium present in it