Question # 1

Atmosphere consists of gasses:

Choose an answer

N₂

O₂

Ar

All

London forces are more affective at:

Choose an answer

high temperature

low temperature

low pressure

high pressure

Plastics are pollution problem because many plastics

Choose an answer

Are made from petroleum

Are very inflammable

Burn to produce toxic fumes

Decompose to produce toxic products

The ratio of close packed atoms to tetrahedral holes in cubic close packing is

Choose an answer

1 : 1

1 : 2

1 : 3

2 : 1

Areal gas obeying Van der Waal's equation will resemble ideal gas ilf the:

Choose an answer

both a and b are large

both a and b are small

a is small and b is large

a is large and b is small

The number of paper industries in Pakistan are

Choose an answer

30

25

35

20

Air pollution causes

Choose an answer

Acid rain

O₃ depletion

Green House Effect

All

Freshly cut metals have a shining surface because

Choose an answer

electrons excited, then excited electrons release energy as light

metals have brittle nature

metals conductivity increases

metals are malleable and ductile

Cooling happens under the Joule Thomson Effect due to sudden:

Choose an answer

Contraction.

Absorption.

Expansion.

All of above.

The gas which obeys the gas laws at all conditions of temperature and pressure is

Choose an answer

ideal gas

perfect gas

real gas

noble gas

Which one of the following does not act as pollutant

Choose an answer

Carbon monoxide

Sulphur dioxide

Hydrocarbons

Carbon dioxide

Weakest acid among the followings is

Choose an answer

Acetic acid

Phenol

Water

Acetylene

Dehydrohalogenation of alkyl halides produces

Choose an answer

Alcohol

Alkane

Alkene

Alkyne

Nylon 6, 6 is prepared by the reaction of nexamethylene with

Choose an answer

Formic acid

Acetic acid

Adipic acid

None of these

Stainless steel contains Cr upto

Choose an answer

12%

18%

10%

5%

Transition elements differ from s and p block elements due to their characteristic properties. What is not he characteristic property of transition elements

Choose an answer

Transition elements show variable oxidation states

Their salts are coloured

They can be used as catalyst

All of them are metals

96500 C electricity is passed through CuSO₄. The amount of copper precipitated is

Choose an answer

0.25 mole

0.5 mole

1.0 mole

2.00 mole

When electricity is passed through molten electrolyte consisting of alumina and cryolite, 13.5 g of Al are deposited. The number of faradays of electricity passed must be

Choose an answer

2.0

1.5

1.0

0.5

Which one of the following elements is not present in all proteins

Choose an answer

Carbon

Hydrogen

Nitrogen

Sulphur

The filtration process is used to to separate solid from :

Choose an answer

Liquid.

Gas.

Solid.

All of above.

Atomic number of Al is 13. When it forms ionic bond with oxygen the number of electrons lost by 1 Al atom is

Choose an answer

1

2

3

4

Series starting form ₃₉Y to ₄₈CD is in period:

Choose an answer

4th

5th

6th

7th

More Classes

Other Links

Chemistry General Science Test Medium Mode 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