Question # 1

Which of the following configuration is associated with biggest jump between second and third IE.

Choose an answer

1s2, 2s2, 2p2

1s2, 2s2, 2p6, 3s1

1s2,2s2,2p6, 3s2

1s2, 2s2,2p6

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

Which of the following have +3 oxidation states.

Choose an answer

B & AI

In & TI

B & In

AI & TI

Stablization of particles and their reactivity is affected by.

Choose an answer

Surface properties

Bulk properties

Regardless to the surface properties

No of particles

The role of the mineral cryolite Na2AlF6 in the Hall process for aluminum production is.

Choose an answer

It is the source of aluminum

it is a chemical reducing agent

It forms a slag to remove impuriteis

In the molten state, it is a solvent for alumina Al2O3

Washing soap can be prepared by saponification with alkali of _____ of the following oil.

Choose an answer

Rose oil

Paraffin oil

Groundnut oil

Coconut oil

If for a solution of an electrolyte. It is the transport number of the cation, then the transport number of the anion I, is equal to

Choose an answer

t/2

1 - t+

1 + t+

(i -t) /2

An explosive

Choose an answer

Nitroglycerine

Trinitrotoluene

Fluorine perchlorate

All above

Which of the following molecules can oxhibit geometrical isomerism.

Choose an answer

CH3CH = CH2

CH3CH = CHCH3

(CH3)2 C = CH2

CH3CH = C(CH3)2

Which of the ionic possesses highest bond energy.

Choose an answer

C-C

Si -Si

Ge - Ge

Sn -Sn

What refer by the ability of steel to be hardened through to its centre in large section?

Choose an answer

Malleability

Hardenability

Ductility

Rigidity

Aluminium hydroxide is.

Choose an answer

An acid

An amphoteric hydroxide

A base

An explosive hydroexide

CCl4 has zero dipole moment because of.

Choose an answer

Planar structure

Tetrahedral structure

Similar size of C and Cl atoms

Similar electrons affinity of C and Cl

VBT does not edplain

Choose an answer

Absorption spectra

Color of transition metal ion

Heat of formation

All above

To increase the life of filament and to low the heat conductivity a mixture in filled in electric bulb.

Choose an answer

Ar & N2

Ar & Kr

Kr & N2

Xe & N2

The vibration degrees of freedom for a linear and non liner poly atomic molecule of seven atoms each an respectively

Choose an answer

30 and 29

30 and 32

28 and 29

None of above

Result of ozone hole is.

Choose an answer

Acid rain

Global warming

Increased amount of CO2

Greater exposure of earth to U.V. rays.

Which of the following elements has the highest third ionization energy.

Choose an answer

Sodium

Magnesium

Aluminum

Silicon

Aluminium halides is.

Choose an answer

White crystalline solid

Hygroscopic

Sublimes at 180^oC

All above

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

Which of the flowing operator combination would yield eight value equation

Choose an answer

d/x (sin x)

d/dx (cos x)

d /dx (sin 4x)

d /dx (cos 4x)

d/dx (e^x)

The change in the concentration of the reactant of product per units time is called.

Choose an answer

Order of the reaction

Melecularity of the reaction

Rate of reaction

None of the above

For the respiration of sea divers mixture is used.

Choose an answer

He & O2

Ar & O2

Ne & O2

Kr & O2

Which of the following techniques involve gas as the mobile phase.

Choose an answer

HPLC

GLC

TLC

Paper chromatography

Which of the following compounds has highest dipole moment.

Choose an answer

Dichloromethane

Chloroform

Chloromathane

All above

The formula of copper pyrite is.

Choose an answer

CuFeS

CuFeS2

Cu2FEs

Cu Fe2S

Which isotope of hydrogen is radioactive in nature.

Choose an answer

Protium and deuterium

Tritium only

Tritium and deuterium

Only deuterium

The absorbance is directly proportional to the path length in the flame and to the concentration of atomic vapor in flame is a statement of.

Choose an answer

Lambert's law

Beer's law

Honery's law

Starke law

Chlorofluorocarbon are widely used as coolants in.

Choose an answer

Air conditioners

Clearing solvents

Aerosol propellant's

All above

The reduction in ozone layer would lead to

Choose an answer

Temperature chages

Rainfall failure

Increase uv radiation on earth

All above

Which of the following statement is not correct with respect to hydrolytic cycle.

Choose an answer

Water covers about 83% of the earth's surface

Water covers about 73% of the ear5th's surface.

It is the major constituent of the lithosphere

it is essential requirement of all the organisms

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