Question # 1

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 is a constituent of nylon?

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Adipic acid

Styrene

Teflon

None of these

Substances that render enzymes catalytically inactive are called

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Conenzymes

Substrates

Inhibitors

Apoezymes

Enzymes are catalysts which contain other than carbon and hydrogen one other element

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Oxygen

Sulphur

Phosphorus

Iodine

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

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Enzyme

Vitamin

Protein

Amino acid

Which of the following is a steroid

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Vitamin A

Vitamin B

Vitamin C

Vitamin D

Orlon is a polymer of

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Tetrafluoroethylene

Acrylonitrile

Ethanoic acid

Benzene

Terylene is madeby polymerization of terephthalic acid with

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Ethylene glycol

Phenol

Ethanol

Catechol

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

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Fehling solution

Phenyl hydrazine

Benedict solution

Hydroxyl amine

Enzymes catalyse all biological reactions occurring in the cell. What is true about an enzyme

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Enzyme is a small molecule

Enzyme is acidic in nature

Enzyme is a protein

Enzyme is a lipid

Monosaccharides belong to the group

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Lipids

Fats

Proteins

Carbohydrates

Which of the following has magnesium?

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Carbonic anhydrase

Haemocyanin

chlorophyll

Vitamin B₁₂

Which one of the following is not an example of chain growth polymer?

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Neoprene

Bunna-S

PMMA

Glyptal

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

Which of the following is a biodegradable polymer?

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Cellulose

Polyethene

Polyvinyl chloride

Nylon-6

Which is not an enzyme

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Transverses

Lipase

Lyase

None of these

One of the followings is not type of polymer

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Homopolymer

Copolymer

Heteropolymer

Terpolymer

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

Which property is not present in lipids?

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Liquid

Solid or semi solid

Soluble in water

Form emultion

The other name of cross linked polymers is

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Linear polymer

Branched polymer

Inter connected polymers

None of these

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

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Urease

Maltase

Zymase

Lypase

Which of these polymers is an addition polymer

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Nylon 6,6

Polystyrene

Terylene

Epoxy resin

Ascorbic acid is a chemical name of

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Vitamin D

Vitamin A

Vitamin C

Vitamin B₆

Which of the following has ester linkage?

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Nylon

Bakelite

Terylene

PVC

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 these polymers is a synthetic polymer

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Animal fat

Starch

Cellulose

Polyester

Which one of the following is a water soluble vitamin

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D

K

A

Ascorbic acid (Vic C)

Which one of the following statements of glucose and sucrose is incorrect?

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Both are soluble in water

Both are naturally occuring

Both are carbohydrates

Both are disaccharides

What is the most common catalyst used in hydrogenation of oils

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Cobalt

Nickel

Tungsten

Copper

The polymers which can be re-softened again and again are caled

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Thermoplastic

Thermosetting

Both a and b

None

A fibre which is made from acrylonitrile as monomer

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PVC

Rayon fibre

Acrylic fibre

Polyester fibre

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