Question # 1

The Lambert beer law states that

Choose an answer

Transmission is directly proportional to path length

Transmission is directly proportional to concentration

Absorbance is inversely proportional to transmission

Absorbance is directly proportional to concentration.

'A line, a point or a plane about which a symmetry operation is performed, is known as.

Choose an answer

Symmetry operation

Symmetry element

Reflection

Inversion

The point group of XeOF4 is.

Choose an answer

C6v

C4h

D4h

D2h

The blue colour of CuSO4 disappears on adding Zn granules to it . it is because of .

Choose an answer

Oxidation of Cu atom

Oxidation of Zn²⁺

Oxidation Cu²⁺

Oxidation of Zn²⁺

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

Choose an answer

Proper rotation

Improper rotation

Inversion axis

Identity

Layer of the C -atom in graphite are hold together by

Choose an answer

Covalent bonds

Free electrons

Ionic bond

Van Dar Waals forces

Which of the following reactions does not take place with light radiation.

Choose an answer

Oxidation

Reduction

Polymerization

Double displacement

According to the Grothus -Draper law

Choose an answer

Only absorbed light is effective in producing photo chemical changes

Only light between certain wavelengths

Light is effective only for photo chemical reactions is solution

The light absorbed in proportional to its intensity

The pKa of acetic acid is 4.74 which implies that.

Choose an answer

pH of 1N solution is 4.74

At pH 4.74 the dissociation of acetic acid is maximum

At pH 4.74 half of the acetic acid molecules are dissociated in the solution.

At pH 4.74 the dissociation of acetic acid is minimum.

Any property whose magnitude is independent of the amount of substance present is called a/an

Choose an answer

Extensive property

Colligative property

Structural propety

Intensive property

During reaction of copper with aqueous solution of silver nitrate

Choose an answer

Silver atoms are reduced

Cu2+ ions are reduced

Silver ions are reduced

No³ ions are reduced

When a strong beam of light is passed through a colloidal solution, the light will

Choose an answer

Be reflected

Be scattered

Pass unchanged

Be dispersed

The rate at which a substance reacts depends on its.

Choose an answer

Molecular mass

Active mass

Equivalent mass

Molar mass

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

Choose an answer

Light scattering method

Osmotic method

Sedimentation equilibrium method

Viscosity method

The value of an Einstein

Choose an answer

Is independent of wavelength

Decrease with increase in wavelength

Increase with increase in wavelength

Depends on the temperature of the absorbing system

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

Choose an answer

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.

In statistical mechanics, there exists a function which contains all the information about a macroscopic system. This function is known as.

Choose an answer

Eigen function

Wave function

Partition function

Distribution function

Which of the following statement is not related with high quantum yield reasons.

Choose an answer

Formation of reactive intermediates which may act as catalyst

The active molecules may collide with other molecules and activates these molecules.

The reaction may be exothermic and heat evolve may activate other molecule

The primary photo chemical process may be reversed

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

Choose an answer

Mole fraction

Normality

Formality

Molaiity

Which of the following expression is correct.

Choose an answer

C = n/RT

C = RT/n

RT = Cn

Cn = 1/RT

The temperate of a gas below which only the gas cools when allowed to expand is know as.

Choose an answer

Inversion temperature

Ideal temperature

Critical temperature

Joule Thomaon temperatu4re

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