Question # 1

Which of the following have identical bond order.

Choose an answer

CN- and O2-

CN - and NO+

O2- and CN+

NO+ and CN+

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

Choose an answer

Is directly proportional to pressure

Is inversely proportional to pressure

Is directly proportional to the square of the pressure.

Is independent of pressure

Which of the following glass transmits the maximum light.

Choose an answer

Serrated glass

Clear glass

Milk glass

Opalescent glass

A red color gas, on condensing ti gives a dark blue liquid.

Choose an answer

NO

N2O

N2O3

N2O4

Hypo is used in photography to.

Choose an answer

Reduce AgBr to metallic silver

Remove silver a silver salt

Remove undecomposed silver bromide as soluble complex

Remove reduced silver

Which of the following steps in involved in the metallurgy of aluminium.

Choose an answer

Purification of bauxite

Electrolytic reduction of alumina

Refining of aluminum

All above

The size of iso electronic species - F- , Ne, and Na+ is affected by

Choose an answer

Nuclear charge (Z)

Valence principal quantum number (n)

Electron electron interaction in the outer orbital

None of the factors because their size to the same.

Which of the following compound will be optically active.

Choose an answer

Suceinic acid

Meso tartaric acid

Acetic acid

Lactic acid

Red colour of glass of due to the presence of

Choose an answer

Cu2O

CoO

MnO2

CdS

Codon for amino acid glycinc is not represented by base pair

Choose an answer

GCA

GGC

GGA

GGU

The change of chemical potential of any component with temperature an constant P and composition, is euqal to.

Choose an answer

Partial molar enthalpy of that component

Partial molar volume

Partial molar free energy

Negative of the partial molar entropy

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

Transition metal possess

Choose an answer

Definite color

Catalytic power

Both A and B

None of above

Acid rain effects

Choose an answer

Human being

Crops

Aquatic life

All above

Which of the following radical is a member of VI group.

Choose an answer

Mg²⁺

Na+

K+

NH₄⁺

All above

Hydrogen gas will not redue

Choose an answer

Heated cupric oxide

Headed ferric oxide

Heated stannic oxide

Heated aluminium oxide

Each of the following compound is an aromatic except.

Choose an answer

Benzene

Naphthalene

Cyclopentadienyl cation

Cyclopentadienyl anion

Monel metal is a alloy of Ni which constrains Ni uptown

Choose an answer

50%

60%

70%

80%

Homolytic fission of convalent bond results in the formation of.

Choose an answer

Free redicals

Carbocations

Carbonions

Both B and C

Potassium reacts with excess of oxygen to form

Choose an answer

K2O

K2O2

KO2

K2O3

When HCl is titrated against NaOH , the pH at the equivalence point is.

Choose an answer

zero

> 7

< 7

14

Which of the following statement is not related to applications and limitations of first law of thermodynamics.

Choose an answer

This law explains why chemical reactions proceed to completion

It is silent about the source of heat

It is silent about the direction of heat

It does not tell us about the reversible process.

The maximum number of electron is an atom with l = 2 and n = 3 is

Choose an answer

2

6

10

12

Which of the following liquids has lowest vapour pressure at 25 ^oC

Choose an answer

Benzene

Chloroform

Ether

H2O

Molten iron withdrawn from the blast furnace is called.

Choose an answer

Wrought iron

Pig iron

Bessemer iron

Stainless steel

Which of the following reaction cannot be used for the synthesis of a amino acids.

Choose an answer

Gabriel phthalimide

Streckers synthesis

Sorensen synthesis

Schmidt synthesis

Alnico is an alloy containing how many percent nickel.

Choose an answer

10%

14%

18%

22%

The process of extracting a metal in pure form its ores is known as.

Choose an answer

Crushing

Grinding

Dressing

Metallurgy

What is a measure of rigidity?

Choose an answer

Stiffiness

Jardmess

Strength

Modulus of elasticity

The value of Kw increase with temperature because the ionization of water.

Choose an answer

Positive

Negative

Endothermic

Exothermic

Which of the following level is an indicator of hearing loss.

Choose an answer

> 25 dB

< 25 dB

<20 dB

None of these

More Classes

Other Links

PPSC Chemistry Full Book 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

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