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Practice MCQ Questions and answers on Chemistry-GK

Learn and practice General Knowledge questions and answers on Chemistry with very easy and understandable explanations. GK questions are very helpful different type of competitive exams. Page-2 section-3

Each section contains 100 MCQs on Chemistry .
11
Which of the following is used as non-stick coating for cooking utensils?
Discuss
Answer & Solution
Answer: Option D
Solution:
The modern non-stick pans were made using a coating of Teflon (polytetrafluoroethylene or PTFE).
12
The fibre least prone to catch fire is
Discuss
Answer & Solution
Answer: Option C
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.
13
Which of the following is used to make light weight, but strong plastic ?
Discuss
Answer & Solution
Answer: Option C
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.
14
Which of the following fibres catches fire least ?
Discuss
Answer & Solution
Answer: Option B
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.
15
Non-stick kitchenwares are coated with
Discuss
Answer & Solution
Answer: Option C
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.
16
Terylene is a condensation polymer of ethylene glycol and which acid?
Discuss
Answer & Solution
Answer: Option D
Solution:
Terylene is a condensation polymer of ethylene glycol and terephthalic acid and also called polyester.
17
The material known in commerce as Terylene is a
Discuss
Answer & Solution
Answer: Option A
Solution:
Terylene is the name for a synthetic polyester fibre. It is a synthetic polyester fibre or fabric based on terephthalic acid, characterized by lightness and crease resistance and used for clothing, sheets, ropes, sails, etc.
18
Nylon is a type of
Discuss
Answer & Solution
Answer: Option A
Solution:
Nylon is a generic designation for a family of synthetic polymers, based on aliphatic or semi-aromatic polyamides. Nylon is a thermoplastic silky material that can be melt-processed into fibers, films, or shapes. It is made of repeating units linked by amide links similar to the peptide bonds in proteins.
19
Nylon is made up of :
Discuss
Answer & Solution
Answer: Option A
Solution:
Nylon is a generic designation for a family of synthetic polymers, based on aliphatic or semi-aromatic polyamides. Nylon is a thermoplastic silky material that can be melt-processed into fibers, films, or shapes. It is made of repeating units linked by amide links similar to the peptide bonds in proteins.
20
Nylon threads are made of
Discuss
Answer & Solution
Answer: Option B
Solution:
Nylon threads are polyamides. They are the condensation polymers of diamines and dibasic acids.