Question # 1

Which one of the following is NOT a nucleophile

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NH2+

BF3

H2O

CH3-

Van der Waals equation explains the behaviour of

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Real gases

Mixture of gases

Ideal gas

Diatomic gases

Which property is not present in lipids?

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Liquid

Solid and semi solid

Soluble in water

Form emulsion

In the atmosphere, O₂is about

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10%

15%

21%

25%

Sugar are polyhydroxy compounds of

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Carboxylic acid

Ketones

Aldehyde

Both B and C

Which of the substance is not going to react the sodium metal:

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Acetic acid

Methanol

Di methyl ether

Ethanol

Covalent solids are composed of

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Ions

Different molecules

Neutral atoms

Diethyl ether

Lithium differs from rest of members of its group due to which of following reasons

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High E.N of Li+1

Small radius

High charge density

All above are correct

The gas which obey's the gas laws at all conditions of temperature and pressure is called:

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Perfect gas

Super gas

Ideal gas

Real gas

Identify the linear polymer out of following

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Amylose

Amylopectin

Starch

Glycogen

The concentration of dissolved molecular oxygen in water which acts as the most important oxidizing agent ranges from

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2 ppm - 6 ppm

2 ppm - 4 ppm

4 ppm - 8 ppm

2 ppm - 3 ppm

Aluminium oxide is:

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Acidic oxide

Basic oxide

Amphoteric oxided

None of these

An azeotropic mixture of two liquids boils at a lower temperature than either of them when lower temperature

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It is saturated

it shows positive deviation from Raoult's law

It shows negative deviation form Raoult's law

It is metastable

Which of the following is not an element?

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Graphite

Diamond

22-Carat gold

Rhombic sulphur

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RCH(CH₃)CO₂H + CH₃OH

RCH(CH₃)CO₂H + HCO₂H

RCH(CH₃)OH + CO₂

RCH(CH₃)OH + HCO₂H

The chemical method used for determination of rate of reaction is

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Spectroscopic

Conductiometric

Refractometric

Titration

Which of the following is a thermosetting plastic

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PVC

Polyethylene

Polystyrene

Melamines

Give IUPAC name fo Acetone

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Ethanal

Propanone

Butanone

Propanal

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Introduction of an inert gas at constant volume

Introduction of PCl₃(g) at constant

Introduction of PCl₅(g) at constant volume

Introduction of Cl₂at constant volume

The Mn³⁺has ______ color

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Violet

Green

Red/brown

No color

Air pollution is not caused by

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Pollen grains

Hydroelectric power

Industries

Automobiles

Which metal is used in the thermit process because of its activity?

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Iron

Copper

Alumnium

Zinc

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