Question # 1

A catalyst increases the rate of a reaction because.

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It provides the necessary energy to the colliding molecules to cross energy barrier

It decreases the heat of the reaction

It decreases the order of the reaction

It provides a different path of lower activation energy.

If 20 ml of 0.5 N salt solution is diluted in one litre. what is the new concentration.

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0.01 N

0.001 N

1 N

10 N

According to the Debye-Huckel theory of strong electrolytes, and ion moving in an atmosphere of oppositely charged ions experience a drag This effect is known as

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Aaymmetric effect

Electrophoretic effect

Inter ionic effect

Concentration effect

Which of the following system has low as well as upper consolute temperature.

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Nicotine - water

Aniline -water

Triethlylamine -water

Phenol -water

The multiplicity of the electronic state is equal to.

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S + 1

2S + 1

2S - 2

2S + 2

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

Which type of the solids are generally good conductors of electricty.

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Covalent

Ionic

Metallic

Molecular

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)

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.

In quantum theory, which of the following tells us that the prediction of quantum mechanics must pass smoothly into those of classical mechanics as we progress in a continuous way from microsopic to macroecopic.

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Uncertainty principle

Correspondence principle

Probability distribution

Aufbau principle

The particle motion in solids is

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Only vibratory

Only translator

Vibratory and rotatory

Only translatory

An emulsifier is an agents which

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Stabilizes an emulsion

Homgeneises and emulsion

Causes coagulation of an emulsion

Helps in the formation of an emulsion

Which of the following concentration term is used in respect of standard solutions.

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Normality

Formality

Molarity

All of above

A drop of a liquid acquires spherical shape because of.

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Its viscous nature

Capillary action

The tendency to acquire minimum surface are

Its shape

Which of the following statement about molecularity is not correct.

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It cannot be fraction

It can be obtained from balanced equation

It may be or may not be equal to the order of the reaction

it can not be more than 3

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.

Which of the following in not a characteristics of crystalline solids.

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Sharp melting point

Isotropic

Long range orderly arrangemnt

None of above

For an elementary reaction

2A + B ------------------- C + D

The molecularity of the reaction is.

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1

2+

3

4

The phenomenon of x-ray diffraction was studied by

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Huygen

Bragg

Max Planck

None of above

Regarding the internal energy of the molecules, which one of the following statements in not correct.

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It is the sum of vibration rotational and electronic energy

It is a path function

It is a state function

It is an exact differential

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

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