Question # 1

There are 20 amino acids found in protein which is not the property of these amino acids

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They are all alpha-amino acids

They are all optically active

They have high decomposition point

They are water soluble

The development of industries was a direct result of which major factor

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population

living standards

depletion of resources

all of these

S.I units for measurements of pressure

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Pascal

mm of Hg

atm

Torr

Cellulose does:

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Satisfy human appetite

Stimulates intestinal peristalsis

Fives fibre and bulk to the food

All of these

Rusting of iron is the example of

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Fast

Slow

moderate

depends upon conditions

Water is purified by the process:

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Aeration

Coagulation

Chlorination

All of these

Benedict solution gives a positive test with but catalyze the same reaction:

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fructose

glucose

starch

sucrose

Final product of hydrolysis of nitrile is

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Ketone

Alcohol

Aldehyde

Carboxylic acid

The nature of crystal of diamond is

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metallic

molecular

covalent

ionic

Detergents are:

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synthetic products

natural product

both a and b

none of the above

Which forms metallic crystals

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Cu

NaCI

SO₂

NH₄CI

The formula of curprite is

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Cu₂S

Cus

Cu₂O

CuCO₃

Glass calorimeter reaction is one which we measure

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Enthalpy of combustion

Enthalpy of reaction

Pressure volume work

None of above

Which of the following in incorrect?

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FelCl₃is used in the detection of phenols

Fehling solution is used in the detection of glucose

Tollen's reagent is used in detection of unsaturation

NaHSO₃is used in the detection of carbonyl compounds

On the basis of VSEPR theory SO₂is a

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Liner molecule

A bent molecule

A strong molecule

A gaseous molecule

When a bond breaks

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Heat is evolved

Heat is absorbs

No change in heat contents takes place

Temperature increases

Lysine is ______ amino acid

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Acidic

Basic

Natural

None of these

Which of the following compounds could be prepared by reacting bromoethane with KCN and then reducing the product

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CH₃CH₃

CH₃CH₂NH₂

CH₃CH₂CH₂NH₂

CH₃CH₂CH₃

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0.5

4.0

2.5

0.25

The geometrical shape of a transition complexion is related to the state of hybridizing of the central atom. What is trigonal bipyramidal

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sp³

dsp²

dsp³

d²sp³

Which of the following has magnesium?

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Carbonic anhydrase

Haemocyanin

chlorophyll

Vitamin B₁₂

Potassium ferrocyanide is a

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Mixed salt

Double salt

Complex salt

Normal salt

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