Question # 1

Which of the following has magnesium?

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Carbonic anhydrase

Haemocyanin

chlorophyll

Vitamin B₁₂

Which one of the following is a water soluble vitamin

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Niacin

Riboflavin

Tyrosine

Ascorbic acid

Which of the following brings about the conversion of starch into maltose

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Maltase

Zymase

Diatase

Invertase

Which of the following is a constituent of nylon?

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Adipic acid

Styrene

Teflon

None of these

Polymer formation from monomers starts by

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Condensation reaction between monomers

Coordination reaction between monomers

Conversion of monomer to monomer ions by protons

Hydrolysis of monomers

(CH₂O)_nis general formula for

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Monosaccharides

Oiligosaccharides

Polysaccharides

None of these

One of the followings is not type of polymer

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Homopolymer

Copolymer

Heteropolymer

Terpolymer

The degree of unsaturation in fats or oils is usually measured by numbers of grams of iodine required by 100 grmas of fat, this is called

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Oil number

Saturation number

Iodine number

Un saturation number

In fructose the possible optical isomers are

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12

8

16

4

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

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Enzyme

Vitamin

Protein

Amino acid

Simple sugars are :

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Monosaccharides

Disaccharides

Oligo saccharides

Trisaccharides

Which of the following is a molecular diseases?

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Allergy

Cancer

German measles

Sickle cell anemia

Which of the following elements is not present in all proteins?

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Carbon

Hydrogen

Nitrogen

Sulphur

Which of these polymers is an addition polymer?

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Nylon-6,6

Polystrene

Terylene

Epoxy resin

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

Sterols, vitamin D and terpenese belong to

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Simple lipids

Complex lipids

Derived lipids

None

A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a:

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Fiber

Plastic

Vanish

Polyamide resin

Naturally occurring lipids are called

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Fats

protein

Steroids

None

The digestion of fats in the intestines is aided by

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Diffusion

Protection

Peptization

Emulsification

Peptide bond is a key feature in

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Polysaccharide

Proteins

Nucleotide

Vitamins

When a nitrogeneous base combine with a sugar it is called

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Ribose

Nucleotides

Nucleoside

None

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

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Thermoplastic

Thermosetting

Both a and b

None

Glycine at pH7 has the structure

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H₂N -- CH₂-- COOH

H₃N⁺-- CH₂-- COOH

H₂N -- CH₂COO^-

H₃N⁺-- CH₂-- COO^-

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

A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a

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Fibre

Plastic

Varnish

Polyamide resin

Which is not a steroid

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Cholesterol

Ergosterol

Phospholipids

None of these

Denaturation of protein means the structure of protein is disrupted, indicate which factor foes not denature protein

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Heating protein

pH changes

Oxidising agent

Keeping pH 7.35

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

Terylene is madeby polymerization of terephthalic acid with

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Ethylene glycol

Phenol

Ethanol

Catechol

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

The reaction between fat and NaOH is called:

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Esterification

Hydrogenolysis

Fermentation

Sponification

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