Question # 1

The temperature at which two conjugate solutions change into one homogeneous solution is called.

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Azeotrope

Conjugate temperature

Consolute temperature

Transition temperature

Which of the following makes the motion of perpetual motion machine a physical impossibility.

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First law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

The Boltzmann law

Which of the following statement is incorrect about rock salt type

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It has for arrangement of Na+

Na+ and Cl- ions have coordination number of 6:6

A unit cell of NaCl metals have rock salt type structure.

None of them

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.

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

The volume of a given mass of gas at constant temperature varies inversely with the pressure. This is a statement of.

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Charlea's law

Avogadro's law

Boyle's law

Dalton 's law

The electronic configuration of chromium (Z =24) in the ground state is.

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[Ar] 4s² , 3d⁴

[Ar] 3d⁶

[Ar]4s¹, 3d⁵

[Ar]

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

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

Wlhich of the following can act as a protective colloid

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Gelatin

Silica gel

Oil in water emulsion

All three

The stabilization of the dispersed phase in a lyophobic sol is due to

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Liking for the dispersion medium

The surface tension of the medium

The formation of an electrical layer between the two phases

The viscosity of the medium

The internal resistance to flow possessed by a liquid is called its.

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Fluidity

Viscosity

Surface tension

Turbidity

The atomic orbitals are progressively filled in order of increasing energy. This statement is called as

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Hund's rule

Aufbau's rule

(n+1) rule

Planck's rule

The molarity of a 500 mL solution containing 4 g NaOH

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0.1

0.2

0.3

0.4

Which of the following statements is not true with reference to ionic conductors.

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Ionic conductance is due to movement of the ions

It involves the transfer of matter

It involves oxidation reduction reactions

It decreases with rise in temperature.

Which of the following is not a colligative property.

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Elevation of B.P.

Depresaion in F.P

Viscosity

Osmotic pressure

A 10% solution of sucrose contains 10 g of sucrose in how much volume of the solution.

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10 mL

100 mL

1000 mL

1 mL

For one mole a gas, the total kinetic energy is equal to.

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2/3 Rt

3/2 RT

2/3 kT

3/2 kT

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

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

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

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