Question # 1

An example of cyclic polyterpenoid is

Choose an answer

Myrcene

Alcoholic

Synthetic rubber

Natural rubber

The freezing point of a solvent

Choose an answer

Will increase on adding a solute

Will decrease on adding a solute

Will note change on adding solute

None of the above

The concentration required to give a signal equal to three times the standard deviation of the baseline is called.

Choose an answer

Sensitivity

Detection limit

Signal to noise ratio

None of the above

Radon is obtained only in the radioactive decay of

Choose an answer

Radium

Thorium

Actinium

Any of above

Which of the following statement is not related to the characteristics of gaseous state.

Choose an answer

The inter molecular forces of attraction are not strong in gaseous state

The gases do not have definite shape and volume

The gases are characterized by low density.

The gases have low comprehensibility

The electromagevitiy of the following elements increase in the order

Choose an answer

F > Cl > O > S

S > Cl > O > F

F > O > N > C

C > O > N > F

Which of the following process is used for the removal of gases.

Choose an answer

Precipitation

Chemical reaction in the atmosphere

Absorption

All above

After assimilation urea leaves behind in the soil

Choose an answer

NH3

CO2

Both A and B

None of above

The term accuracy refers to how near the observed value is to.

Choose an answer

Mean value

Low value

True value

Standard value

Both C and D

Which of the following is not strong electrolytes.

Choose an answer

HCl

H2SO4

HNO3

CH3COOH

Is a peroxy acid

Choose an answer

H2SO5

H2S2O6

H2SO4

H2S2O7

The green colour of glass is due to the presence of.

Choose an answer

Chromium (III)

Cobalt (II)

Mn (IV)

Iron(III)

The degree of dissociation of weak acid increases with.

Choose an answer

Decreasing pressure

Increasing pressure

Increasing concentration

Decreasing concentration

A diameter of human hair is approximately ________________ m

Choose an answer

75000

75

7.5 x 10^-5

7.5 x 10^-9

The only oxidation state of alkali metals in their compounds is.

Choose an answer

+1

+2

-1

0

Which of the following technique is the application of voltammetry at a fixed potential to detect changes int he currents as a function of the concentrating of the analyte

Choose an answer

Amperometry

Coulometry

Polarography

Potentiomertry

The noble gases which does not I do not form any clathrates is.

Choose an answer

He

Ne

Argpm

Both He and Ne

The number of coordinates required to specify the position of all the atoms in a molecule is called number of degree of freedom. The vibration degrees of freedom of a linear molecule containing N atoms are

Choose an answer

2N-5

2N -6

3N -5

N-6

Increasing oxygen contents in oxyacids leads to.

Choose an answer

An increase in thermal stability

An increase in acid strength

A decrease in oxidizing power

All above

A correct reaction mechanism for a given reaction usually is.

Choose an answer

The same as the balanced chemical equation

Obvious if its heat of reaction is known

Sometimes difficult to prove

Obvious if the activation energy is known

Which of the following statements is not true about potash alum.

Choose an answer

Its empirical formula is KAI (SO4)2 12H2O

Its aqueous solution is basic in nature

It is used in dyeing industry

On heating it melts in its water of crystallization

For quality control of Portland cement, the test essentially done is.

Choose an answer

Setting time

Soundness

Tensile strength

All

Wlhich of the following can act as a protective colloid

Choose an answer

Gelatin

Silica gel

Oil in water emulsion

All three

Which of the following is not evoked in quantum theory?

Choose an answer

Schrodinger wave equation

The rigid rotor approximation

The particle in a box

Boltzmann distribution

Which one of the following has the highest boiling point.

Choose an answer

H2O

H2S

H2Se

H2Te

Which of the following gas protects us form harmful effect of uv radiation.

Choose an answer

SO2

NO2

CO

O3

Excluding H-atom , Hydrogen bond never involves more than atoms.

Choose an answer

One

Two

Three

Four

Aluminothermy used for on the spot welding of large iron structures is based upon the fact that.

Choose an answer

As compared to iron, aluminium has greatest affinity for oxygen.

As compared to aluminium, iron has greater affinity for oxygen

Reaction between aluminim and oxygen endothermic

Reaction between iron and oxygen is endothermic

Which of the following pollutant is not secondary pollutnat.

Choose an answer

SO3

NO2

SO2

Ozone

In their ionic compounds halogens exhinit the oxidation states of.

Choose an answer

-1

-2

-3

-4

Photochemical smog consist of excessive amount of X in addition to aldehydes ketones, PAN etc. X is.

Choose an answer

Methane

Carbon monoxide

Ozone

Carbondioxide

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