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Online Tests of Chemistry MCQs

All past papers of Chemistry are included in the following tests of chemistry which are very very helpful to get 100% results in the initial tests of Pak Army, Pak Navy and Pakistan Air Force initial tests. It helps to pass the tests of Regular Commission, Short Service Commission, and in the tests of Direct Short Service Commission.

If you have applied in Pak Army, Pak Navy and PAF then you must do free practice here until you get 100% results in the given tests of chemistry. All important questions related to Chemistry are available here. These MCQs are very helpful for LCC also and to join other Pak Defence Forces.

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See also: Important Questions of Chemistry with Answers

Practice Tests of Chemistry

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Chemistry Quiz

Low pH value means

Weak acid

Strong basic

Strong acid

All of them

The mass of one molecule of water is:

18 g

18 mg

18 amu

18 kg

How many times liquid are denser than gases

100 times

100000times

1000000times

1000 times

Fat soluble vitamin are

A,B,C

K,D,E

B,C

A,F,D,C

Second ionization energy of magnesium reactor as a:

1450

739

590

1145

Which is lightest metal?

Lithium

Silicon

All of the following are tri-atomic molecules except:

H₂O

CO₂

O₃

Electronic configuration is based upon:

Ionization Energy

Atomic Number

Electron affinity

Mass Number

When reaction ceases to proceed it is called:

Chemical equilibrium

Non of these

Dynamic equilibrium

Static equilibrium

Sugar is a structure of ?

C2H22O6

C12H22O11

C6H11O2

C3H22O6

The valency of phosphate radical is:

-2

-4

-1

-3

Industrial chemistry deals with the manufacturing of components:

In Laboratory

On economic scale

On commercial scale

On micro scale

As the numeric value of Qc (8.0) is less than Kc (57.0)the reaction is not

In reverse direction

At equilibrium

In forward direction

All of these

______ percent of sunlight is absorbed by atmospheric gases.

The most common example of corrosion is

Rusting of tin

Rusting of iron

Rusting of aluminum

Chemical decay

The most ductile metal is:

When CaO react with CO₂ they produce:

All of these

CaCO₃

Both a and b

CaCO₂

In the preparation of paint, it is used in thinner:

Barium sulphate

Polyhydroxy Phenol

Xylol

Gypsum

Which one of the following is a synthetic fiber

All of these

Rayon

Nylon

Polyester

Percentage of protein in dryweight of cell is

60%

90%

50%

40%

Isotopes of an element have different:

Electron of number

Atomic number

Number of election

Number of neutron

Hydrogen peroxide is a strong reactant in acidic solution:

Oxidizing

Acidic

Neutral

Reducing

The elements in group 2 of the periodic table are called

Alkali metal

Halogen

Transition metal

Alkaline earth metal

The removal of terminal hydrogen from the straight chain of propane is called

n-propile

Iso propile

Propane

Propene

Sulphur has an atomic No.16 and Mass no.32 it has:

16 Electron,8 proton,7 Neutron

16 Electron, 8 Proton,8 Neutron

9 Electron,16 Proton,8 Neutron

16 Electron, 16 Proton,16 Neutron

Your score is

If you want to prepare MCQs related to Periodic table, Chemical reactions, Organic chemistry, Inorganic chemistry, Biochemistry, Atomic structure, Chemical bonding, Stoichiometry, Acids and bases, pH scale, Chemical equilibrium, Thermodynamics, Redox reactions, Electrochemistry, Chemical kinetics, Chemical formulas, Molar mass, Chemical compounds, Polymers, and Catalysts then click on the links below;

1000 chemistry questions and answers pdf (Download)
Chemistry Quiz with Answers (Download)
Past Papers Questions of Biochemistry (Download)

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