Chemistry - Study Mode

[#901] The fibre least prone to catch fire is
Correct Answer

(C) Cotton

Explanation

Solution: Cotton is the fibre that is least prone to catch fire. There are many other such fibres but cotton tops the list here. Cotton is natural fibre which is polymer of glucose. cotton helps to prevent on catching fibre. That's why our parents use cotton clothes in kitchen.

[#902] Which of the following is used to make light weight, but strong plastic ?
Correct Answer

(C) Polyvinyl Chloride

Explanation

Solution: Polyvinyl chloride (PVC) is a common, strong but lightweight plastic that is used in making tough plastic. It is used for flexible applications such as insulating cables. It is the third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene.

[#903] Which of the following fibres catches fire least ?
Correct Answer

(B) Cotton

Explanation

Solution: Cotton is the fibre that is least prone to catch fire. There are many other such fibres but cotton tops the list here. Cotton is natural fibre which is polymer of glucose. cotton helps to prevent on catching fibre. That's why our parents use cotton clothes in kitchen.

[#904] Non-stick kitchenwares are coated with
Correct Answer

(C) Teflon

Explanation

Solution: The modern non-stick pans were made using a coating of Teflon (polytetrafluoroethylene or PTFE). PTFE was invented serendipitously by Roy Plunkett in 1938, while working for a joint venture of the DuPont company.

[#905] Terylene is a condensation polymer of ethylene glycol and which acid?
Correct Answer

(D) Terephthalic acid

Explanation

Solution: Terylene is a condensation polymer of ethylene glycol and terephthalic acid and also called polyester.