Question # 1

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

The volume of given mass of gas at constant pressure is directly proportional to the absolute temperature.This is a statement of.

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Charles's law

Boyle's law

Avogadro's law

Dalton's law

The experimental relationship between rate of the reaction and concentration of the reactants is called.

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Rate law

Law of mass action

Le-Chatelier's principle

Rate constant

The point group of XeOF4 is.

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C6v

C4h

D4h

D2h

The isotonic nucleotide X and Y have mass numbers 35 and 37 respectively if the atomic number of X is 17 the atomic number of Y will be.

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15

17

19

18

The relative lowering of vapour pressure of a solution on the addition of non -volatile solute.

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Is equal to the mole fraction of solute

Is equal to the sum of the mole fraction of the solute and solvent

Depends upon the nature of the solute

Depends upon the mole fraction of the solvent

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

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-5

5

9

-9

The photoelectric effect is the ejection pf electrons from the surface of metal when light falls on it. Which of the following statements is not correct about the phenomenon.

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The kinetic energy of photo electron depends upon the frequency of the incident radiation

Electrons are ejected only when the frequency of light exceeds a certain threshold value

The higher the energy of the photon greater the kinetic energy of the ejected electron.

The threshold frequency of all the metals is same.

The unit cell having dimensions, a = b=c, alpha = beta= gama not equal 90 ^o is known.

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Cubic

Trigonal

Tetragonal

Monoclinic

Which of the following statement is not related to MOT

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Atomic orbitals lose their identities

MOTgives as idea of denationalization

MOT uses all the orbitals and elections

It treated bond as purely covalent

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

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Formality

Normality

Molality

Molarity

For an elementary reaction

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

The molecularity of the reaction is.

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1

2+

3

4

For dilute solutions colligative properties depend on.

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The number of the particles of the solute and nature of solvent.

The number of the solute particles and on their nature

The number of the solute particles and nature of solute and solvent

The number of the solute particles and irrespective of the nature of the solute and solvent.

Which of the following solution would have the largest depression in freezing point.

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1% glucose

1 % KCl

1 % AlCl3

1 % BaCl2

The oxidation Number of I in HIO4 is.

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+6

+ 7

+ 3

+ 14

In emulsions , the dispersed phase and the dispersion medium are.

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Both solids

Both liquids

Both gases

Phase is liquid and medium is solid.

Which law of thermodynamics helps in calculating the absolute entropies of varies substances.

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Zeroth law

1st law

Second law

Third Law

Which of the following is the statement of third law of thermodynamics.

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Entroy of perfectly crystalline substance is zero at T = 0

Entropy of a perfectly crystaline substance is zero at standard state conditions

Entropy and enthalpy of a substance become equal at T = 0

Free energy of a crystalline substance is zero at T = 0

Which of the following solids is a better conductor of electricity.

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Pore NaCl cyrstal

Diamond

Graphite

Marble pieces

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

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Molality

Formality

Normality

Molarity

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

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