Question # 1

Which of these polymers is an addition polymer

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Nylon 6,6

Polystyrene

Terylene

Epoxy resin

Which of the following is the repeating monomeric unit in cellulose

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Sucrose

Maltose

Cellobiose

Glucose

The polymers which can not be re-softened again and again are called

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Thermoplastic

Thermosetting

Both a and b

None

Polysaccharides are also called

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Crystals

Sugars

Liquids

None sugars

Which of these polymers is an addition polymer?

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Nylon-6,6

Polystrene

Terylene

Epoxy resin

Monosaccharides and oligosacchradies are generally called as

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Crystals

Sugars

Liquids

Non-sugars

Enzymes, in the living systems

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Provide energy

Provide immunity

Transport oxygen

Catalyze biochemical processes

Sterols, vitamin D and terpenese belong to

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Simple lipids

Complex lipids

Derived lipids

None

The stroids of fungi and yeast and yeast are called:

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Vitamin D

Vitamin D₂

Ergostrol

Cholestrol

Which one of the following is a water soluble vitamin

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Niacin

Riboflavin

Tyrosine

Ascorbic acid

Which of the following is a molecular diseases?

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Allergy

Cancer

German measles

Sickle cell anemia

A sequence of how many nucleotides in massenger RNA makes a codon for an amino acid

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Three

Four

One

Two

Which of the following statements is incorrect about vitamins

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Often function as coenzymes

Molecules contain at least one ring structure

Are often synthesized by the body

Are polyfunctional compounds

In which of these processes are smell organic molecules made into macromolecules?

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The cracking of petroleum fractions

The fractional distillation of crude oil

The polymerization of ethane

The hydrolysis of proteins

The reagent which forms crystalline osazone derivative when treated with glucose is

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Fehling solution

Phenyl hydrazine

Benedict solution

Hydroxyl amine

Glycine at pH7 has the structure

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H₂N -- CH₂-- COOH

H₃N⁺-- CH₂-- COOH

H₂N -- CH₂COO^-

H₃N⁺-- CH₂-- COO^-

Cotton is ______% cellulose

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90

100

99

30

Which of the following has ester linkage?

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Nylon

Bakelite

Terylene

PVC

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

Which of the following has magnesium?

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Carbonic anhydrase

Haemocyanin

chlorophyll

Vitamin B₁₂

The protein which only yield amino acids and their derivatives

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Simple proteins

Complex proteins

Derived protein

All of these

Activity of the enzyme is reduced by

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Temperature

Concentration

pH

Inhibitors

Purine derivative among the following bases is

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Thymine

Uracil

Guanine

Cytosine

Copolymer is

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Nylon-6

Nylon 66

PMMA

Polyethene

Which of the following fibres are made of polyamides?

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Dacron

Orlon

Nylon

Rayon

Which one is a polymer compound?

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SO₂

CO₂

CH₄

PVC

The product of addition polymerization reaction is

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PVC

Nylon

Terylene

Polyamide

How is the secondary structure of protein stabilized

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Through hydrogen bonding

Through ionic bonding

Through van der wall forces

Through covalent bonding

A fibre which is made from acrylonitrile as monomer

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PVC

Rayon fibre

Acrylic fibre

Polyester fibre

Violet colour is obtained when dilute CuSO₄is added in alkaline solution of protein. This test is known as

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Biuret

Xanthoproteic test

Hopkins-cole

All of these

Organic synthetic or man made polymers are plastics, rubber and fibre. Which is not a synthetic polymer

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Silk

Polyester

Polyvinyl chloride

Nylon

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