Question # 1

On hydrolysis of starch, we finally get

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Glucose

Fructose

Both

Sucrose

Bakelite is obtained from phenol by reacting with

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Acetaldehyde

Acetal

Formaldehyde

Chlorobenzene

Which functional group is present in glycerol tristearate

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Carboxylic acid

Alcohol

Aldehyde

Ester

Which of the following is a water soluble vetamin?

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Niacin

Riboflavin

Trypsin

Ascorbic acid

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

Which one of the following is a water soluble vitamin

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Niacin

Riboflavin

Tyrosine

Ascorbic acid

Terylene is madeby polymerization of terephthalic acid with

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Ethylene glycol

Phenol

Ethanol

Catechol

DNA has deoxyribose, a base and the third component is

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Phosphoric acid

Ribose

Adenine

Thymine

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

Polysaccharides are also called

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Crystals

Sugars

Liquids

None sugars

Substances that render enzymes catalytically inactive are called

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Conenzymes

Substrates

Inhibitors

Apoezymes

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

Glycine at pH7 has the structure

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H₂N -- CH₂-- COOH

H₃N⁺-- CH₂-- COOH

H₂N -- CH₂COO^-

H₃N⁺-- CH₂-- COO^-

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

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Urease

Maltase

Zymase

Lypase

Protein may have

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Primary structure

Secondary structure

Tertiary structure

All of these

When a nitrogeneous base combine with a sugar it is called

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Ribose

Nucleotides

Nucleoside

None

Poly hydroxyl compounds of aldehyde and ketones are:

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Carbohydrates

Proteins

Fats

Lipids

The disaccharide present in milk is

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Sucrose

Maltose

Lactose

Cellobiose

Which of these polymers is a synthetic polymer?

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Animal fat

Starch

Cellulose

Polyester

Copolymer is

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Nylon-6

Nylon 66

PMMA

Polyethene

Of the following which is a step growth polymer

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Bakelite

Polyethylene

Teflon

PVC

Which polymerization is free radical machanism based

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Addition

Condensation

Both a and b

None

Peptide bond is a key feature in

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Polysaccharide

Proteins

Nucleotide

Vitamins

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

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Thermoplastic

Thermosetting

Both a and b

None

Protein are classified into

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Simple protein

Complex protein

Derived proteins

All of these

Which carbohydrates is an essential constituent of plant cells?

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Starch

Cellulose

Sucrose

Vitamins

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

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Carbohydrates

Lipids

Fatty acids

Proteins

What is the most common catalyst used in hydrogenation of oils

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Cobalt

Nickel

Tungsten

Copper

RNA is a polymer of nucleotide which consist of three components. Which one is not the component in the nucleotide of an RNA

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D-Ribose

Wracil base

Prosphate group

Thyamine base

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

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Fructose

Starch

Glucose

Cellulose

Which of the following is the repeating monomeric unit in cellulose

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Sucrose

Maltose

Cellobiose

Glucose

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