Question # 1

What is the most common catalyst used in hydrogenation of oils

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Cobalt

Nickel

Tungsten

Copper

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

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Carbon

Hydrogen

Nitrogen

Sulphur

Which functional group is present in glycerol tristearate

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Carboxylic acid

Alcohol

Aldehyde

Ester

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

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

The raw material to form nylon is

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Adipic acid

Butadiene

Isoprene

Ethylene

Peptide bond is a key feature in

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Polysaccharide

Proteins

Nucleotide

Vitamins

In fructose the possible optical isomers are

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12

8

16

4

The monomeric units of starch is/are

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Glucose

Fructose

Glucose and fructose

Mannose

(CH₂O)_nis general formula for

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Monosaccharides

Oiligosaccharides

Polysaccharides

None of these

Oxidation reduction is done by

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Oxidoreductase

Lipases

Lyase

None of these

The metal present in blood is

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Al

Hg

Cu

Fe

Purine derivative among the following bases is

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Thymine

Uracil

Guanine

Cytosine

Simple sugars are :

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Monosaccharides

Disaccharides

Oligo saccharides

Trisaccharides

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

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Thermoplastic

Thermosetting

Both a and b

None

Synthetic polymer prepared from caprolactum is known is

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Nylon 610

Teflon

Terylene

Nylon-6

A fat or oil is characterised for extent of unsaturation by one of the following number, which one

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Rancidity number

Acid number

Iodine number

Saponicfication number

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

Protein are classified into

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Simple protein

Complex protein

Derived proteins

All of these

Which of the following is a water soluble vetamin?

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Niacin

Riboflavin

Trypsin

Ascorbic acid

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

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

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

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Oxygen

Sulphur

Phosphorus

Iodine

Which of the following polymers is used for weather resistant paints

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Arcylic resins

Polyvinyl acetate

Polystyrene

PVC

Which of these polymers is an addition polymer

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Nylon 6,6

Polystyrene

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

Cellulose does:

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Satisfy human appetite

Stimulates intestinal peristalsis

Gives fibre and bulk to the food

All of these

β-D-glucose is a monomer for

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Strach

Cellulose

Glycogen

Protein

Copolymer is

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Nylon-6

Nylon 66

PMMA

Polyethene

At what pH glycine shows the structure H_3N⁺-- CH₂-- COOH

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2

7

10

14

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

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