Question # 1

The equilibrium constants Kp and Kc are related as

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Kp = Kx Pdelta n

K p= Ks/P delta n

Ks = Kp (RT)delta n

Kx = Kp (P/RT) delta n

Which of the following factors does not effect the rate of the reaction.

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Pressure

Temperature

Concentration

Catalyst

All of the above

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 electrolytes will be most effective in the coagulation of arsenic sulphide sol.

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NaNO3

AI PO4

MgSO4

K4[Fe(CN)6]

Usually the rate of the reactions is expressed as.

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mol dm-1

mol dm-3 s-1

mol dm-2 s-1

mol 2 dm-3 s-1

Which of the following is an example of molecular solids.

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MgO

ZnO

Ice

Graphite

The correct order of acidic strength is.

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HF < HCl< HI < HBr

HI <HBr < HCl < HF

HI < HBr < HF < HCl

HF < HCl < HBr < HI

During reaction of copper with aqueous solution of silver nitrate

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Silver atoms are reduced

Cu2+ ions are reduced

Silver ions are reduced

No³ ions are reduced

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 principal quantum number determines the overall size of the orbital and energy of the electron when it is associated with the orbital.It may have the values.

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n = 1,3,5.........infinity

n= 2,4,6................infinity

n = 1,2,3,4..............infinity

None of the abvoe

Rutherford proposed the nuclear model of the atom to account for the result of experiments in which the alpha particles are scattered from metal foils.Which of the following statements in not related to Rutherford observation.

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An atom consists of central core or nucleus around which the protons exist.

The nucleus has most of the mass of the atom

the nucleus consists of protons and neutrons.

Each distinct atom has a specific number of protons.

Which of the following colligative properties can be used to characterize colloidal particles.

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Lowering in vapour pressure

Elevation in boiling point

Depression in freezing point

Osmotic pressure

A 2M solution of H2SO4 would have how many moles of H+ ion in one liter

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1.0

2.0

4.0

5.0

The Lambert beer law states that

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Transmission is directly proportional to path length

Transmission is directly proportional to concentration

Absorbance is inversely proportional to transmission

Absorbance is directly proportional to concentration.

The experimental relationship between rate of the reaction and concentration of the reactants is called.

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Rate law

Law of mass action

Le-Chatelier's principle

Rate constant

Which of the following solution has pH= 11?

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1 X 10^-11 m NaOH

1 x 10^-11 m HCl

1 x 10^-3 M NaOH

1 X 10 ³ M NaOH

Concentration polarization arises because of the

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Different concentrations of solutions in the two half cells

Changes in the concentration of electrolyte around the electrode from bulk concentration

Reversible nature of the cell

Variation in temperature during measurements

Which of the following item is not symmetry element.

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Pllane of symmetry

Inversion centre

Improper rotation

Optical activity

The constant temperature and pressure,the rates of effusion of various gases vary inversely as square root of their denature. This is a statement of.

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Boyle's law

Charles's law

Graham's law

Daltons's law

The temperate of a gas below which only the gas cools when allowed to expand is know as.

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Inversion temperature

Ideal temperature

Critical temperature

Joule Thomaon temperatu4re

Which of the following statement is not correct regarding galvanic cells.

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Oxidation occurs at the anode

Ions carry current inside the cell

Electrons flow around the external circuit. form cathode to anode

When the e.m.f. of the cell is positive cell reactionis spontaneous

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