Question # 1

Which of the following polymers is used for weather resistant paints

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Arcylic resins

Polyvinyl acetate

Polystyrene

PVC

For every reaction occurring in the body three is at least one type of

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Enzyme

Vitamin

Protein

Amino acid

The three dimensional folding and twisting of a polypeptide chain give rise to

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Primary structure

Secondary structure

Tertiary structure

All of these tertiary

The substance upon which an enzyme acts is known as its

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Domain

Field

Substrate

Reactant

Major food factors are:

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Fats and oils

Carbohydrates

Protiens

All of these

Naturally occurring lipids are called

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Fats

protein

Steroids

None

The high molecular weight materials which yield on hydrolysis the amino acids is called:

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Carbohydrates

Lipids

Fatty acids

Proteins

The simplest separating unit of a polymer is called:

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Monomer

Dimer

Trimmer

Macromer

Monosaccharides belong to the group

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Lipids

Fats

Proteins

Carbohydrates

Which of the following enzymes brings about the hydrolysis of fats?

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Urease

Maltase

Zymase

Lypase

Vegetable oils are

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Unsaturated fatty acids

Glycerides of unsaturated fatty acids

Glycerides of saturated fatty acids

Essential oils obtained from plants

Which of the following is not present in RNA?

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Uracil

Thymine

Ribose

Phosphate

Which polymerization is free radical machanism based

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Addition

Condensation

Both a and b

None

Plastics are a pollution problem because many plastics

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Are made from petroleum

Are very inflammable

Burn to produce toxic fumes

Decompose to produce toxic products

Which of the following is not present in nucleotide?

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Guanine

Cytosine

Adenine

Tryoxine

Which of the following is an example of ketohexose?

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Mannose

Galactose

Maltose

Fructose

Simple sugars are :

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Monosaccharides

Disaccharides

Oligo saccharides

Trisaccharides

Which of the following is fully fluorinated polymer?

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Neoprene

Teflon

Thiokol

PVC

Which is not an enzyme

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Transverses

Lipase

Lyase

None of these

Which of the following is a steroid

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Vitamin A

Vitamin B

Vitamin C

Vitamin D

Enzymes, in the living systems

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Provide energy

Provide immunity

Transport oxygen

Catalyze biochemical processes

Which one of the following is the most abundant organic substance found in nature

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Fructose

Starch

Glucose

Cellulose

A polymer may be

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Linear

Branched

Cross linked

All of these

Monosaccharides are

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Aldoses

Ketoses

Either a and b

None of these

Which of the following is obtained by condensation polymerization?

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Polyethene

Teflon

Phenol formaldehyde resin

Nitrile rubber

Teflon, styron and neoprene are all

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Copolymers

Condensation polymers

Homopolymers

Monomers

Molar mass of high molecular w.f. polymers ranges from:

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1000 to 10000

10000 to 100000

100000 to 1000000

1000 to 100000000

One of the followings is not type of polymer

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Homopolymer

Copolymer

Heteropolymer

Terpolymer

Enzymes are chemically

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Carbohydrates

Proteins

Fatty acids

Phospholipids

Purine derivative among the following bases is

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Thymine

Uracil

Guanine

Cytosine

Vegetable oils are

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Unsaturated fatty acids

Glycerides of unsaturated fatty acids

Glyccerides of saturated fatty acids

Essential oils obtained from plants

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