Question # 1

A colloidal system in which a liquid is dispersed in a solid is called a/an

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Emulsion

Sol

Gel

Precipitate

Which of the following should have the largest dipole moment.

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Carbon tetrachloride

Cis-stibeue

Trans-atibeue

Cis-dichlorocthylene

The number of mole of the solute dissolved per dm3 of the solution is called.

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Molality

Formality

Normality

Molarity

The Langmuir theory of unimolecular adsorption is generally valid at.

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Low pressures and low temperature

Low pressures and high temperature

High pressures and low temperature

High pressure and high temperature

The glow of the yellow phosphorous as a result of slow oxidation in air is called.

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Chemiluminescene

Luminescence

Biolumineacence

Photolysis

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

A silver iodide and was prepared by mixing KI and AgNO2 solution with the AgNO2 in slight excess. Which of the following descriptions is correct regarding is not particles.

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Negatively charged because of the excess of NO-3 ions

Positively charged because of the excess of Ag+ ions in the AgI lattice

Negatively charged because I ions are adsorbed from the KI solution

Neutral

The tyndall effect is not observed in

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Suspensions

Emulsions

Colloidal solutions

True solutions

The glow of yellow phosphorous as is result of slow oxidation in air is called.

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Chemiluminescene

Luminescence

Bioluminescence

Photolysis

The extinction co efficient has the units.

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cm2 mol -1

cm3 mol-1

mol cm-3

mol cm-1

HS- is a conjugate base of.

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S2-

H2S

H2SO3

H2SO4

Which of the following statement is not related to collision theory.

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Molecules must collide with each other to do a chemical reaction

Molecules must posses a minimum amount of energy

Molecules must have proper orientation

Collision theory is applicable to liquid only.

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

The addition of As to Ge makes the latter a

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Metallic conductor

Ionic conductor

Intrinaic conductor

Extrinsic semiconductor

Which of the following solution has highest normality.

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1 N H2PO4

0.5 N H2SO4

6 g NaOH per 100 cm3

4 g NaOH PER 1000 cm3

Which of the following is not a true characteristics of a catalytic reaction.

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The amount and chemical composition of the catalyst remains unchanged after the reaction

The catalyst does not intiate a chemical reaction

The reaction in which product also act as catalysis are called autocratically reactions.

The catalyst shifts the equilibrium position of a reaction in a favorable direction

Which of the following statements is not related with joule Thomson effect.

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Joule Thomson is 0 isenthalpic in nature

H2 and He show heating effect

All gases show change in temperature

The change in temperature depends on initial temperature and nature of the gas.

Joule Thomson coefficient is defined as meo= (op/oT)H

The equivalent conductance (^) and molar conductance ( ^ m ) of BaSO4 are related as.

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^ = ^m/2

^/2 = ^m

^ = ^m

^ = ^m/4

At the some temperature 0.1 M solution of urea is isotonic with.

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0.1 M glucose solution

0.1 M NaCl solution

0.1 M urea solution

0.1 M BaCl2 solution

Which of the following unit cells has least symmetry.

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Monocline

Cubic

Triclinic

Tetragona

The pKa of an acid having ionization constant 1 x 10^-5 is

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-5

5

9

-9

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