Question # 1

Which of the following is always true for the adiabatic expansion of gas.

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Temperature rises

Pressure rises

W=0

Q = 0

Wlhich of the following can act as a protective colloid

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Gelatin

Silica gel

Oil in water emulsion

All three

Which substance has the greatest lattice energy.

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CuBr

MgO

KI

NaF

The lowest K.E. for an electron is three dime national cubic box is given by

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h²/ 8m^a

3h² / 8 ma²

9h²/ 8ma²

16h² / 8ma²

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

Brass is an alloy of

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Copper and tin

Copper and zinc

Aluminium and nickel

Leed and tin

According to the Langumir isotherm , when the pressure of the gas is very large, the adsorption.

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Is directly proportional to pressure

Is inversely proportional to pressure

Is directly proportional to the square of the pressure.

Is independent of pressure

The mole of photon is knonw as.

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Quantum

Einstein

Energy packet

None of the above

The process of passing of a precipitate into colloidal solution, on adding an electrolyte is called.

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Dialysis

Peptization

Electrophoresis

Electromsmosis

The law which relates the solubility of a gas to its pressure is called.

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Raoult's law

Nernst law

Ostwald's law

Hennery's law

In the kinetic study of a reaction A _____________ products.

A straight line was observed when a graph between time and 1/C2 was plotted. the reaction is.

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Second order

First order

Third order

Zero order

Which of the following methods gives the number average molecular weight of a polymer.

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Light scattering method

Osmotic method

Sedimentation equilibrium method

Viscosity method

During the titration of weak acid against NaOH the conductance of the solution after the neutralization point.

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Is constant

Decreases

Varies irregularly

Increase

The azimuth or angular quantum number (i) determines the number of sob shells in a given shall. the allowed values of l for a given value ffor n are.

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1.2.3.......................

1,2,3 ..................(n-1)

0.1.2.3................(n-1)

2,4,6,..............(n-2)

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

Poise is a unit of.

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Refractive index

Optical activity

Fluidity

Viscosity

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

A compound with an congruent melting point decomposes on heating into.

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A liquid of the same composition as the solid

A new solid phase and a solution with a compositional from that of the solid phase

A new solid phase and a solution with the same composition as that of the solid phase

A solution of fixed composition

Which of the following symmetry element leaves the molecule or an object unchanged.

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Proper rotation

Improper rotation

Inversion axis

Identity

The intensity of magnetization produced per unit strength of the applied magnetic field is called magnetic susceptibility., which of the following statements is not related with this phenomenon.

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Confirmation of structure of given compound

Complex storeochemistry

Diamagnetic nature of molecules

Paramagnetic nature of molecules.

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