Question # 1

The Langmuir adsorption iso therrn shows that the amount of adsorbed gas per gram of the solid is equal to.

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ap/1+bp

ap+1/1-bp

1+ap/1-bp

a(1+bp)

The depolarizer used in dry cell batteries in.

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NH4Cl

MnO2

KOH

Na2PO4

How much amount of NaOH is required to prepare 100 mL of 1 N solution.

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80 g

4 g

40 g

zero

Which of the following has hexagonal structure.

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Sodium chloride

Potassium choride

Diamond

Graphite

Which of the following statement is not related to collision theory.

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Molecules must collide with each other to do a chemical reaction

Molecules must posses a minimum amount of energy

Molecules must have proper orientation

Collision theory is applicable to liquid only.

The sum of pH and pOH is aqueous solution is equal to.

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14

7

zero

pKw

Which of the following statements is not related with entropy.

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It is a measure of disorder

It is a measure of unavailable energy

It is a function of thermodynamics probability

It is a path function

The SI unit of pressure is Pascal it is define da sa force per unit are of 1N/m2 one atmosphere of pressure is equal to.

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760 mm of Hg

1 bar

101 k Pa

760 torr

All are correct

The rise of a liquid in capillary tube is due to.

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Osmosis

Diffusion

Surface tension

Viscosity

For assciated liquids, the value of d/M n x 10⁸ should be (where d is the density, M is the molar mass and n is the coefficient of viscosity)

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Zero

Infinte

Higher than 70

Less than 70

Which of the following solution would have the largest depression in freezing point.

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1% glucose

1 % KCl

1 % AlCl3

1 % BaCl2

Wlhich of the following can act as a protective colloid

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Gelatin

Silica gel

Oil in water emulsion

All three

The relative lowering of vapour pressure of a solution on the addition of non -volatile solute.

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Is equal to the mole fraction of solute

Is equal to the sum of the mole fraction of the solute and solvent

Depends upon the nature of the solute

Depends upon the mole fraction of the solvent

Which of the following reactions have small enthalpy change.

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NaOH with HCl

NaOH with CH3 COOH

HCl with NH4 OH

None of these

Which of the following enthalpies is always negative.

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Enthalpy of melting

Enthalpy of combustion

Enthalpy of solution

Enthalpy of formation

Which of the following statement is not correct regarding the stern theory of charge on colloidal particles.

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The colloidal particle has a charge distribution at its surface.

In the immediate vicinity of the colloidal particles there is an excess of counter ions

The greater the concentration and charge of ions in the diffused electrical double layer. the larger is the thickness of the layer

At large distance from the colloidal particles, the concentration of co-ions and counter ions are almost equal

Which of the flowing operator combination would yield eight value equation

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d/x (sin x)

d/dx (cos x)

d /dx (sin 4x)

d /dx (cos 4x)

d/dx (e^x)

Branch of chemistry that deals with the basic principles governing energy changes during various processes is called.

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Wave mechanics

Chemical kinetics

Chemical thermodynamics

Electro chemistry

The designation of an orbital with n =4 and l = 1 in

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4 s

4 p

4 d

4 f

The equivalent conductance (^) and molar conductance ( ^ m ) of BaSO4 are related as.

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^ = ^m/2

^/2 = ^m

^ = ^m

^ = ^m/4

The branch of chemistry dealing with the study of reactions in the Uv visible region of the spectrum in known as.

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Kinetics

Photo chemistry

Surface chemistry

Catalysis

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