Question # 1

Which of the following enthalpies is always negative.

Choose an answer

Enthalpy of melting

Enthalpy of combustion

Enthalpy of solution

Enthalpy of formation

The units of coefficient of viscosity are.

Choose an answer

kg m-1 n-1

gm -1, s-1

kgm-1, min -1

None of the above

The angle between corresponding planes forming the external surfaces of the crystal remains constant for a given substances This is known as.

Choose an answer

Steno's law

Henry's law

Bragg law

Pascal law

Retarded reaction are those

Choose an answer

In which the rate of the reaction is independent of pressure

In which products are strongly adsorbed on the surface of the solid catalyst

Which are reversible under all conditions

For which G is positive

The compound contains two types of X and Y its crystal structure is a cubic lattice with X-atoms at the corners of the unit cells and Y-atom t the body centre, The simplest formulae of this compound is.

Choose an answer

X2Y

XY

XY2

X8Y

Which of the following statement is false regarding lyphilic sols.

Choose an answer

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

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

Choose an answer

Zeroth law

1st law

Second law

Third Law

Which of the following statement is not correct regarding galvanic cells.

Choose an answer

Oxidation occurs at the anode

Ions carry current inside the cell

Electrons flow around the external circuit. form cathode to anode

When the e.m.f. of the cell is positive cell reactionis spontaneous

The total number of crystal systems and the number of Bra via is lattices are.

Choose an answer

7,7

7,14

14,7

14,28

A 2M solution of H2SO4 would have how many moles of H+ ion in one liter

Choose an answer

1.0

2.0

4.0

5.0

The value of comprehensibility factor (z) = pV/nRTfor an ideal gas is equal to.

Choose an answer

R

1

2

3

The depolarizer used in dry cell batteries in.

Choose an answer

NH4Cl

MnO2

KOH

Na2PO4

The mole of photon is knonw as.

Choose an answer

Quantum

Einstein

Energy packet

None of the above

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

Choose an answer

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 multiplicity of the electronic state is equal to.

Choose an answer

S + 1

2S + 1

2S - 2

2S + 2

The branch of chemistry which deals with the rate of reaction as well as mechanism is known as

Choose an answer

Wave mechanism

Classical thermodynamcis

Chemical kinetics

Phtochemistry

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

Choose an answer

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

At constant temperature and pressure, the decrease in Gibbs free energy (F) in equal to

Choose an answer

Increase in entropy

Decrease in entropy

Reversible work done by the system

All types of work except the work of expansion

HS- is a conjugate base of.

Choose an answer

S2-

H2S

H2SO3

H2SO4

The height to which a liquid will rise in an open capillary tube is inversely proportional to.

Choose an answer

Temperature of the liquid

Surface tension

Density of the liquid

Air pressure

The designation of an orbital with n =4 and l = 1 in

Choose an answer

4 s

4 p

4 d

4 f

More Classes

Other Links

PPSC Chemistry Part I Physical Chemistry Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer