Question # 1

The graph between pressure and volume at constant temperature for gas is:

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Isobaric

Isothermal

Isotherm

None of above

Choose the correct equation among the following given by clauslus to understand to behaviour of molecules:

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PV =nRT

C_r.m.s= √3RT/M

d = PM/RT

PV = 1/3mnc^-2

Molten lead and iead (II) bromide both conduct electricity. Which one of the following statements relating to this is true?

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Both undergo chemical change when they conduct

Both conduct by the movement of charge particles

Both will also conduct in the solid state

Both contain mobile electrons

Nylon, 6,6 is a condensation polymer of

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adipic acid and glycol

phthalic acid and glycol

adipic acid and hexaethylene diamine

phthalic acid and hexaethylene diamine

The partial pressure of 0₂in the lungus is

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116 torr

159 torr

560 torr

760 torr

If Kc value is small then equilibrium position will shift

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Towards left

Remains unchanged

Towards right

lt is always constant value

Which one of the following is a powerful electrophile used to attack on the electrons of benzene ring?

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FeCl2

Cl+

FeCl-4

Cl2

The isomerism in which the compounds differ with respect to functional group but have same molecular formula is called

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Metamerism

Functional group isomerism

Position isomerism

Chain isomerism

Protein may have

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Primary structure

Secondary structure

Tertiary structure

All of these

0.1M HCI having pH =1.0 it is about 100 time stronger than acetic acid what will be the pH of acetic acid:

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0.1

1.3

2

3

Stability of Cu-metal is due to filled of d-orbital

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Half

Completely

Partially

Quarterly

Value of rate constant k is specific for a reaction, and varies from reaction to reaction. The value of k of a reaction changes with

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Time

Temperature

Concentration of reactants

Order of reaction

Sintered glass is porous material used for:

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Absorption

Decoration

Filtration

All of above

Self linkage of carbon to produce long chains

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isomerism

Polymorphism

Polymerization

Catenation

Which the increase in carbon number of solubility of an alcohol

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Increases

Decreases

Remains unaffected

None of these

In the ground state, an element has 13 electrons in its M shell. The element is

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Copper

Chromium

Nickel

Iron

Which of the following forms a toxic substance in blood by combing with hemoglobin?

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Carbon dioxide

Carbon monoxide

Oxygen

Methane

The compounds which have any atom other than Carbon atom, in rings are called as

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Monocyclic

Heterocyclic

Homocyclic

None of the above

Glass calorimeter reaction is one which we measure

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Enthalpy of combustion

Enthalpy of reaction

Pressure volume work

None of above

Organic compounds are soluble in all except

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Benzene

Petroleum

Ether

Water

If four moles of sulpur dioxide are oxidised to sulphur trioxide, how many moles of oxygen molecules are required

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0.5

1.0

1.5

2.0

The most commonly and widely used nitrogen fertilizer in Pakistan is

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Urea

Ammonium nitrate

Ammonium sulphate

Ammonium chloride

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