Question # 1

Drying agent which react with CO2 and removes water vapours is.

Choose an answer

CaO

CaCl2

CaCO3

Ca(NO3)2

The configuration of valence shell of certain atom X is 3s2 , 3p5, which valences can it exhibit.

Choose an answer

1,3 only

1,5 only

1,3,5,7

1,3,4

When the colourless liquid chlorobenzene is shaken with bromine water, the chlorobenzen becomes a yellow-orange colour. Which of the following is the best interpretation of this.

Choose an answer

An addition compound of chlorobenzene and bromine has been formed.

The chlorine atom has been replaced by a bromine atom

The bromine is mor esoluble in chlorobenzene than in water

A hydrogen atom has been replaced by a bromine atom

Which of the following energy is trapped by the autotrophic organisms.

Choose an answer

Mechanical energy

Electrical energy

Radiant energy

Electronic energy

The vapour pressure of a liquid

Choose an answer

Always increase's with temperature

Always decreases with temperature

Is independent of temperature

Increase up to the boiling point

Which of the following is atmospheric pollutant.

Choose an answer

CO2

CO

O2

N2

Aluminum occurs in nature as.

Choose an answer

Native

Combined form

Both native and combined

Free

Which are not considered member of d-block elements.

Choose an answer

Zn

Cd

Hg

All above

The alkali metal with highest melting point is

Choose an answer

K

Na

Li

Ca

An Ideal gas is one which obeys all the gas law at.

Choose an answer

Low pressure

High Pressure

Low and High temperature

All condition of pressure and temperate re

Stable metal ions strictures are.

Choose an answer

Noble gas structure

Is electron group structure

Transition metal in structure

All of the above

Which of the following statement is not related to MOT

Choose an answer

Atomic orbitals lose their identities

MOTgives as idea of denationalization

MOT uses all the orbitals and elections

It treated bond as purely covalent

Which of the following in not a characteristics of crystalline solids.

Choose an answer

Sharp melting point

Isotropic

Long range orderly arrangemnt

None of above

The increase in boiling points of noble gases from He to Xe is due to the

Choose an answer

Decreases in ionization energy

Increases in polarizability

Increase in electron affinity

Increase in atomic volume

The formation of daughter DNA's from parent DNA is called.

Choose an answer

Transalation

Transcription

Reproduction

Replication

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 percentage of nitrogen in Urea is _____________%

Choose an answer

46

37

82

50

Which of the following radical is not a member of III group

Choose an answer

Al³⁺

Fe²⁺

Ca²⁺

Fe³⁺

Ferrochrum contains Cr up to

Choose an answer

60-70%

70-80%

80-90%

40-50%

Which of the following substance is not weak electrolyte.

Choose an answer

CH3COOH

NH4OH

Oxalic Acid

NaCl

The greater stability of bonzyl carbonium ion as compared to t-butyl carbonium ion is due to.

Choose an answer

Inductive effect

Resonance effect

Electrometric effect

All above

Which of the following cast irons is a high carbon silicon alloy.

Choose an answer

Gray iron

White iron

Malleable iron

Alloy iron

On the basic of CFT the bonding between the metal and ligand is totally

Choose an answer

Ionic

Covalent

Coordinate

Metallic

The number 7.65 is rounded to.

Choose an answer

7.6

7.7

7.5

7.8

Which of the following is not obtained when Br2 is added to ethylene in the presence of aqueous NaCl solution.

Choose an answer

Br CH2CH2Br

Br CH2CH2Cl

ClCH2 CH2Cl

ClCH2CH2Cl

Which of the following acids acts as acid waste from coal mines.

Choose an answer

HCl

HNO3

CH3COOH

H3PO4

Which of the following pairs does not represent Lowery acid base pair.

Choose an answer

H2O+NH3

H2O +H2O

HCL + H2O

CH3NH2 + BF3

Which of the following is not correct.

Choose an answer

Rusting of iron can be stopped by increasing the concentration of CO2 in water

Rusting of iron is electrochemical in nature.

Rusting of iron takes place in moist air

Rusting of iron produces hydrated iron (III) oxide

The flow of solvent into a solution when two are separated by a semi -permeable membrane is called.

Choose an answer

Mixing

Effusion

Diffusion

Osmosis

Yellow green flame is observed with

Choose an answer

Calcium salt

Barium salt

Strontium salt

Sodium salt

Aluminium halides is.

Choose an answer

White crystalline solid

Hygroscopic

Sublimes at 180^oC

All above

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