Question # 1

Which of the following is not an organic precipitating agent.

Choose an answer

Diemethglyoxime

Cuperon

Oxime

Acetate

In terms of the amount of the substance adsorbed per gram of the adsorbent (x/m), and pressure p of the gas, the Freudlich adsorption isotherm is represented as.

Choose an answer

x/m = k/pⁿ

x/m = kpⁿ

p = k (x/m)ⁿ

x/m = (k/p)ⁿ

The emission of light in a biological reaction is known as

Choose an answer

Fluorescence

Phosphorescence

Bioluminescence

Photolysia

Which of the following statements is incorrect.

Choose an answer

The elements of group 18 are known as aerogens.

Group 2 elements are all metals

Metallic character increase on going down a group

All the elements belonging to a particular period have same valence shell configuration.

The hydrogen bond is strongest in.

Choose an answer

O - H .............S

S - H.............O

F- H....................F

F - H...............O

Which of the following detector is used in GC analysis

Choose an answer

Thermal conductivity detector

Flame ionization detector

Mass spectrometer

All above

Dibornae is used

Choose an answer

Fro high energy fuel

For welding torches

as reducing agent

All above

The following oxo acids have been arranged in the order decreasir acid strength identify the correct order.

Choose an answer

III > IV > II > I

III > II > I >IV

I > II >III > IV

IV > III > II > I

A system is said to be in the colloidal state if the particle size of the dispersed phase ranges from

Choose an answer

_o

I to 10 A

10 to 10000 A

10 to 100 A

1000 to 10000 A

Which process of adsorption of hydrogen on palladium is known as.

Choose an answer

Syneresis

Occlusion

Diffusion

Erosion

They hydrolysis of methly acetate is a reaction of.

Choose an answer

First order

Second order

Third oirder

Fourth order

Eutrophication is process which involves

Choose an answer

Depletion of ozone layer

Increase in the concentration of ozone in water

Decrease in the concentration of dissolved oxygen in water by algae

Decrease in the level of SO2 in air

A closed system is one which can exchange with surrounding.

Choose an answer

Matter but not energy

Energy but not matter

Both matter and energy

Neither matter nor energy

The oxidation state shown by phosphorus is.

Choose an answer

- 3

+ 3

+ 3 and +5

-3 ,+ 3 and +5

Fish die in water bodies polluted by sewage due to.

Choose an answer

Pathogens

Clogging of gills by silt

Reduction in dissolved oxygen

Foul smell

Which of the following is not chemical characteristics of water.

Choose an answer

pH

COD

BOD

Colour

Dull red flame is observed with

Choose an answer

Calcium salt

Barium salt

Strontium salt

Sodium salt

Which of the elements of group II A has the highest value of IE.

Choose an answer

Mg

Be

Ca

Sr

The number used in cancer therapy is.

Choose an answer

Fe

Co

Ni

Rn

For one mole a gas, the total kinetic energy is equal to.

Choose an answer

2/3 Rt

3/2 RT

2/3 kT

3/2 kT

Which of the following is not a true characteristics of a catalytic reaction.

Choose an answer

The amount and chemical composition of the catalyst remains unchanged after the reaction

The catalyst does not intiate a chemical reaction

The reaction in which product also act as catalysis are called autocratically reactions.

The catalyst shifts the equilibrium position of a reaction in a favorable direction

Acid rain effects

Choose an answer

Human being

Crops

Aquatic life

All above

Hydrolysis of protein gives

Choose an answer

a -amino acid only

b-amino acids only

gama amino acid only

A mixture of all of these

The sample characteristics affecting the weight loss curve include.

Choose an answer

Amount of sample

Sample particle site

Heat of decomposition reactions

All

If 20 ml of 0.5 N salt solution is diluted in one litre. what is the new concentration.

Choose an answer

0.01 N

0.001 N

1 N

10 N

Ingold's isoprence rule states that in terpenoids isopren units are joined.

Choose an answer

Head to tail

Head to head

Tail to tail

In a random order

Different arrangement of groups in space which can be converted into one another by rotation around a single bond are caled.

Choose an answer

Conformations

Metameres

Enatiomers

All of the above

The ion that is isoelectornic with CO is

Choose an answer

CN-

O2+

CO2-

N2+

Which of the following statements is NOT true .

Choose an answer

About 10% of the earth's crust is iron

Pure iron does not have significant industrial use because it is too weak and soft.

Steel in an alloy of carbon and iron with limits on the amount of carbon

None of above

The number of gram equivalents of the solute per dm3 of the solution is called.

Choose an answer

Formality

Normality

Molality

Molarity

Which treatment is done with pulp before delivering it to paper making machine.

Choose an answer

Pulp is disperse din water to make slurry

Mechanical refining or heating of the fibers

Addition of chemical additives and recycled fibres from the waste paper plant

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