Question # 1

An equilibrium the free energy change delta F for a reaction is.

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Maximum

Minimum

Zero

Negative

In C4-axis of rotation, an object in rotated through an angle of.

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120^o

180^o

100 ^o

90^o

The particle motion in solids is

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Only vibratory

Only translator

Vibratory and rotatory

Only translatory

Which of the following is not a correct postulate of the kinetic theory of gases.

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The molecules are in random motion

The gaseous collisions are perfectly elastic

The average kinetic energies of different gases are equal at a particular temperature.

The pressure exerted on the walls of the container is due to inter molecular forces.

The number of gram equivalents of the solute per dm3 of the solution is called.

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Formality

Normality

Molality

Molarity

The freezing point of a solvent

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Will increase on adding a solute

Will decrease on adding a solute

Will note change on adding solute

None of the above

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

The co ordination number of atoms in a hexagonal closed packed structure is

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2

6

12

4

The kinetics of the decomposition of ammonia on the tungsten surface follows

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Zero order

First order

Second order

Third order

Which of the following is a buffer solution.

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CH3COOH + NH4OH

CH3 COOH + HCl

CH3COOH + NaOH

CH3COOH + CH3COONa

When a strong beam of light is passed through a colloidal solution, the light will

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Be reflected

Be scattered

Pass unchanged

Be dispersed

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

Which substance has the greatest lattice energy.

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CuBr

MgO

KI

NaF

Which of the following statement is not related to applications and limitations of first law of thermodynamics.

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This law explains why chemical reactions proceed to completion

It is silent about the source of heat

It is silent about the direction of heat

It does not tell us about the reversible process.

The units of coefficient of viscosity are.

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kg m-1 n-1

gm -1, s-1

kgm-1, min -1

None of the above

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.

For a chemical reaction A ___________ produce, the rat of the reaction doubles when the concentration of A is increased by 4 times the order of the reaction is.

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0

1

1/2

4

At higher altitudes, the boiling point of water is lowered because.

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Atmospheric pressure is low

Temperature is low at high altitude

Atmospherics pressure increase

None of the above

In proper rotation (Cn) an object is rotated through an angle of.

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a/n radians

2n/n radians

3n/n radians

4n/n radians

Which of the following statement is false regarding lyphilic sols.

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The colloidal particles show a linking for the dispersion medium

These are generally easy to prepare

These are more stable than lyophobic sols

The stability of the sols is mainly due to the electrical double layer

The reverse of photo chemical reaction is called.

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Phosphorescence

Chemiluminescence

Fluorescence

Photscnaitization

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