Question

Identify the use of Buna-N.

• A. In making soles of shoes
• B. To prepare bubble gums
• C. For making inner tubes of tyres
• D. To manufacture chemical containers

Hint:

Buna-N is preferred where oil resistance and wear resistance are required.

Answer 1

The Correct Option is A

Step 1: Understand Buna-N.
Buna-N is a synthetic rubber also known as nitrile rubber. It is a copolymer of butadiene and acrylonitrile.
Step 2: Properties of Buna-N.
Buna-N has good resistance to oils, fuels, and abrasion. It also has good mechanical strength and durability.
Step 3: Analyze the options.
(A) In making soles of shoes: Due to its abrasion resistance and toughness, Buna-N is commonly used in shoe soles.
(B) To prepare bubble gums: Bubble gum uses natural polymers, not Buna-N.
(C) For making inner tubes of tyres: Inner tubes are mainly made from natural rubber.
(D) To manufacture chemical containers: Plastics, not Buna-N, are generally used.
Step 4: Conclusion.
Buna-N is used in making soles of shoes.