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Chemistry in Everyday Life -1

Description: Chemistry in everyday life - 1
Number of Questions: 15
Created by:
Tags: Shivam Some Important Polymers Polymers of Commercial Importance Structure of Proteins Proteins Biomolecules
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Which of the following is a complete fluorinated polymer?

  1. Teflon

  2. Neoprene

  3. Thiokol

  4. PVC

  5. Bakelite


Correct Option: A
Explanation:

Teflon is a complete fluorinated polymer. Teflon is a tough synthetic resin made by polymerising tetrafluoroethylene, chiefly used to coat non-stick cooking utensils and to make seals and bearings.

Which of the following fibres are made of poly-amides?

  1. Orlon

  2. Dacron

  3. Nylon

  4. Rayon

  5. Neoprene


Correct Option: C
Explanation:

Nylon is made of poly-amides. Nylon is a tough, lightweight, elastic synthetic polymer with a protein-like chemical structure, able to be produced as filaments, sheets, or molded objects.

Which of the following synthetic compunds is a thermosetting plastic?

  1. Rayon

  2. PVC

  3. PVA

  4. Perspex

  5. Bakelite


Correct Option: E
Explanation:

Bakelite is a thermosetting phenol formaldehyde resin, formed from an elimination reaction of phenol with formaldehyde.

Which of the following forms the natural/synthetic rubber?

  1. Isoprene

  2. Nitro cellulose

  3. Polyethylene

  4. Bakelite

  5. Teflon


Correct Option: A
Explanation:

Isoprene is a volatile liquid hydrocarbon obtained from petroleum, whose molecule forms the basic structural unit of natural and synthetic rubbers. Hence, Isoprene is the natural rubber.

Polypropylene is not used in:

  1. clothes

  2. ropes

  3. heat resistant plastics

  4. parachute cord

  5. bags


Correct Option: C
Explanation:

Polypropylene is not used in heat resistant plastics, as it cannot withstand high temperatures.

Which of the following is a chain growth polymer?

  1. Glyptal

  2. Polypropylene

  3. Nylon-6, 6

  4. Nylon-6

  5. PVA


Correct Option: B
Explanation:

Polypropylene is a chain growth polymer. Polypropylene is a synthetic resin which is a polymer of propylene, used chiefly for films, fibres, or molding materials.

Which polymer is obtained by condensation polymerization?

  1. Polythene

  2. Teflon

  3. PVC

  4. Phenol formaldehyde

  5. PVA


Correct Option: D
Explanation:

Polymer obtained by condensation polymerization is phenol formaldehyde. Phenol formaldehyde resins are synthetic polymers obtained by the reaction of phenol or substituted phenol with formaldehyde. Phenolic resins are mainly used in the production of circuit boards.

The catalyst used in the manufacture of polythene by Ziegler method is

  1. titanium tetrachloride

  2. lithium chloride

  3. triethylaluminium

  4. both triethylaluminium and titanium tetrachloride

  5. triphenylaluminium


Correct Option: D
Explanation:

The catalyst used in the manufacture of polythene by Ziegler method is triethylaluminium and titanium tetrachloride.

________ stabilises the helical structure of protein.

  1. Peptide bond

  2. Dipeptide bond

  3. Tripeptide bond

  4. Hydrogen bond

  5. Van der Waals' forces


Correct Option: D
Explanation:

Hydrogen bond is a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.

Which of the following amino acids is achiral?

  1. Glycin

  2. Valine

  3. Proline

  4. Histidine

  5. None of the above


Correct Option: A
Explanation:

Glycin is an achiral amino acid. Glycin is the simplest, naturally occurring amino acid, which is a constituent of most proteins.

Carbohydrate, which cannot be hydrolyzed by the human digestive system is

  1. starch

  2. glycogen

  3. cellulose

  4. all of the above

  5. both glycogen and cellulose


Correct Option: C
Explanation:

Cellulose is an insoluble substance which is the main constituent of plant cell walls and of vegetable fibres such as cotton. It is a polysaccharide consisting of chains of glucose monomers.

Rice is deficient in which of the following amino acid?

  1. Lysine

  2. Alanine

  3. Glycine

  4. Leucine

  5. Histidine


Correct Option: A
Explanation:

Rice is deficient in Lysine. It is a basic amino acid, which is a constituent of most  of the proteins. It is an essential nutrient in the diet of vertebrates.

Which of the following compound(s) do not belong to lipids?

  1. Fats

  2. Phospholipids

  3. Carbohydrates

  4. Amino acids

  5. Both fats and carbohydrates


Correct Option: C
Explanation:

Carbohydrates do not belong to lipids. They belong to a large group of organic compounds occurring in foods and living tissues and include sugars, starch, and cellulose.

Which of the following chemical compounds form the antibodies?

  1. Carbohydrates

  2. Proteins

  3. Vitamins

  4. Lipids

  5. Enzymes


Correct Option: B
Explanation:

Antibodies are proteins. Proteins are any of a class of nitrogenous organic compounds which have large molecules composed of one or more long chains of amino acids and are an essential part of all living organisms, especially as structural components of body tissues such as muscle, hair etc. and as enzymes and antibodies.

Mutarotation does not occur in which of the following options?

  1. L-Glucose

  2. D-Glucose

  3. D-Fructose

  4. Sucrose

  5. Both D-Glucose and D-Fructose


Correct Option: D
Explanation:

Mutarotation does not occur in Sucrose. It is a compound which is the chief component of cane or beet sugar.

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