Question # 1

Which of the following methods does not give the weight average molecular weight.

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Sedimentation equilibrium

Sedimentation velocity

Light scattering

Osmotic method

The mole of photon is knonw as.

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Quantum

Einstein

Energy packet

None of the above

The correct order of acid strength is.

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HIO4 > HBrO4 > HCIO4

HCIO4> HBrO4 > HIO4

HBrO4 > HIO4 > HCIO4

HBrO4 > HCIO4 > HIO4

The temperature at which the vapour pressure becomes equal to external pressure is called.

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Saturation point

Critical temperature

Consolute temperature

Boiling point

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

Which of the following can act both as a Bronsted acid and a Bronsted base.

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Na2CO3

OH-

HCO3-

NH3

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

The rate constant for 3rd order reaction has the dimentions of.

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mol-2 s-1

I2 mol-2 s-1

mol I -1 s-1

I-1 mol -1 s-1

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 reciprocal of the coefficient of viscosity in called.

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Density

Specific gravity

Fluidity

Conductance

Which of the following solution would exhibit abnormal colligative proportions.

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0.1 M NaCl

0.1 M urea

0.1 M sucrose

0.1 M glucose

When a concentrated solute of an electrolyte is diluted.

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Its specific conductance increases

Its equivalent conductance decreases

The specific conductance decreases and equivalent conductance increases

Both specific and equivalent conductance increase

According to Henry's Law. the mole fraction of a gas (x) dissolved in a solvent is related to the pressure of the gas.

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x = k/p

x = p/k

x = k

p = k/x

Which of the following statement is not correct with respect to group theory.

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Two elements of a group combine to form a third element of a group

An element combines with itself to form another element of the group.

Each element of the group obey associative law of combination

Each group element has no reciprocal

The flow of solvent into a solution when two are separated by a semi -permeable membrane is called.

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Mixing

Effusion

Diffusion

Osmosis

Which of the following is not related to crystallography .

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Law of rational indices

Law of anymmetry

Law of constancy of interfacial angel

Henry's law

Which of the following phenomena is not explained by the classical mechanics.

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Black body radiation

Photoelectric effect

Atomic and molecular spectra

Heat capacities of solids

All of the above

The rays emitted by the cathode in a gas discharge tube under low pressure and high voltage of electricity are called cathode rays. Which of the following properties are not related to cathode rays.

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These travel in a straight lines.

These are deflected by magnetic and electric field.

Minerals Fluoreace with a characteristic color when placed in a beam of cathode rays.

These are dependent of the material used for the electrode.

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]

Which of the following statements is not relevant to the Plank's quantum Theory.

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Radiant energy is not absorbed or emitted continuously

Radiant energy is emitted or absorbed in the form of small packets of energy.

The quantum oflight energy is called photon

The energy associated with photon of radiation is directly proportional to the wavelength.

A half cell reaction is one that

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Occurs at one electrode

Goes only half way to completion

Involves a half mole of the concentration of the solution

Always oxidizes

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