Question # 1

Graphite is a good conductor of electricity because is.

Choose an answer

Has sp2 hybridized carbon stoms

Has free electrons

Is crystalline

Has free atoms

The dye obtained from madder root

Choose an answer

Indogotin

Indanthrene

Alizarin

Acriflavin

Bromination of n-butane produces.

Choose an answer

I-bromobutane as the major product

2- bromobutane as the major product

Both I - bromo and 2- bromobutane with equal percentage

Both i-bromo and 2-bromo products whose percentage depends upon temperature.

Group VII A of periodic table consist of elements.

Choose an answer

4

5

6

7

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 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

When orthoboric acid is heated strongly it gives.

Choose an answer

B2O3

H2B3O7

HBO2

B

Which of the microscope techniques is similar to the Atomic Force Microscopy (AFM)

Choose an answer

Scanning Electron Microscopy

Scanning Tunneling Microscopy

Transmission Electron Microscopy

None of the above

Which of the following is a false statement.

Choose an answer

Halogens are strong oxidizing agent

Halogens show only (-I) Oxidation state

Hf molecules from intermolecular H-Bonds

Fluorine is highly reactive

Which of the following is not a component of flame photometer.

Choose an answer

Pressure regulator and flow meter

The atomizer

The burner

Hallow cathode lamp

Among oxides of nitrogen all are gases except.

Choose an answer

N2O5

N2O

NO

N2O3

In quantum theory, which of the following tells us that the prediction of quantum mechanics must pass smoothly into those of classical mechanics as we progress in a continuous way from microsopic to macroecopic.

Choose an answer

Uncertainty principle

Correspondence principle

Probability distribution

Aufbau principle

Proteins have characteristics

Choose an answer

Melting poirn t

Iso electric point

Boiling point

All of these

A man has to think of alternate sources of energy due to

Choose an answer

Shortage of vehicles

Shortage of fossil fuels

Construction of house

Running of power plant

Four elements A, B,C,D have atomic numbers Z , 1 ,Z, Z +1 and Z +2 Respectively If Z is 9, then bond between which pair of elements will be ionic.

Choose an answer

A and C

D and C

D and B

B and C

Which of the following is the best indicator for titration of NH4OH with HCl.

Choose an answer

Methyl red

Methyl orange

Eosin

Phenolphthalein

The alkaline hydrolysis of fat is know as

Choose an answer

Condensation

Esterification

Saponification

Emulsification

Enfleurage process is ued to extract the essential oils from

Choose an answer

Bark of plant

Seeds of plant

Leaves of plant

Flowers of plant

According to R, S system the correct order of priority of the following groups is .

Choose an answer

-CH2OH > - CHO > ----- COOH

-COOH > ------CHO > ------CH2OH

---- CH2OH -----> - COOH > -------CHO

--- COOH > - CH2OH >----- CHO

Which of the following is the correct order of interactions.

Choose an answer

Covalent < hydrogen bonding < Van Der Waal's < dipole -dipole

Van der Waal's < hydrogen bonding < dipole -dipole < covalent

Van der Waal's < dipole -dipole < hydrogen bonding < covalent

Dipole-dipole < Van der Waal's < hydrogen bonding < covalent

Which of the following technique is used to separate substance based on their charge to mass ratio.

Choose an answer

HPLC

HPTLC

GC

Electrophoresis

Aluminium is used for.

Choose an answer

Making ultensile & framea

Making alloys

Reducing agent

All above

Which of the following ions is smallest in size.

Choose an answer

F-

Cl-

I-

Br-

PCRA stand for

Choose an answer

Pollution control research association

Petroleum conversation Research association

Petroleum control research association

All of above

Which of the following devoice is used to measure potential difference between celctrodes.

Choose an answer

Polarimetre

Conductometer

Voltmeter

Photometer

Low quality steels with an M. Suffix on the designation intended for non structural application is classified as.

Choose an answer

Merchant quality

Commercial quality

Drawing quality

Low quality

Inductive effect can be used to explain

Choose an answer

Dipole moment of chemical bonds

Strength of acids

Strength of bases

All above

The silicate chains are present in

Choose an answer

Silica

asbestos

Beryl

Clays

Which of the following physical properties is employed int he analytical methods.

Choose an answer

Electric current

Transition temperature

Surface tension

All above

Which of the following represent the fuming sulphuric acid

Choose an answer

H2S2O4

H2S2O3

H2S2O6

H2S2O7

For highly paraffine , crude oil, the characterization factor will be in range of

Choose an answer

11.5-12.5

12.5-13.0

13.5-14.0

13.4-15.0

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