Question # 1

A pressure of 1Nm^-2 is equal to:

Choose an answer

one bar

one pascal

stalagmometer

one aomosphere

Irreversible precipitation of protein caused by heating is called

Choose an answer

Polymerization

Denaturing

Inversion

Co-angular

Plastic 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 product

Which one of the following does not show isomerism?

Choose an answer

Propane

Hexane

Butane

Pentane

The value of the vapour pressure of water at its boiling point at Karachi and Murree is

Choose an answer

same

different

depends upon the environmental conditions in both cities

greater at Murree and less at Karachi

Amount of ozone in atmosphere is expressed in units:

Choose an answer

Kilograms

cm

molarity

DU

covalent network of crystals has:

Choose an answer

lower melting point than molecular crystals

higher melting point than molecular crystals

H-bonding

Which of the following is sulphur highly containing protein

Choose an answer

Collagen

Keratin

Ossein

Reticulin

Stability of Cu-metal is due to filled of d-orbital

Choose an answer

Half

Completely

Partially

Quarterly

Chemicals used to kill herbs are:

Choose an answer

Herbicides

Insecticides

Pesticides

Fungicides

The partial pressure of 0₂in the lungus is

Choose an answer

116 torr

159 torr

560 torr

760 torr

Pressure volume work is

Choose an answer

50 cm³of 0.05 molar nrea (N₂H₄CO) solution has % W/N concentration

Choose an answer

6%

3%

0.3 %

0.6 %

Which set of hybrid orbitals has planar triangle shape?

Choose an answer

sp³

sp

sp²

dsp²

The toxic organic compounds and heavy metals and metalloids results in contamination of

Choose an answer

Surface water

Ground water

Both surface and ground water

Neither surface nor ground waters

Which of the following substances is used as an antiknock compound?

Choose an answer

Tetraethyl lead

Lead tetrachloride

Lead acetate

Ethyle acetate

Solvent extraction method is a particularly useful technique of separation when the product to be separated is:

Choose an answer

non-volatile or thermally unstable.

volatile or thermally stable.

non-volatile or thermally stable.

volatile or thermally unstable.

Potassium ferrocyanide is a

Choose an answer

Mixed salt

Double salt

Complex salt

Normal salt

α-Amino acids are found in protein. Which of the following is anα-amino acid

Choose an answer

When n-hexane is heated in the presence of Pt at 500°C, it cyclists to give

Choose an answer

Benzene

Cyclohexene

Benzene

Toluene

Alkyl benzenes are readily oxidized by axidfied

Choose an answer

KMnO₄

K₂CO₃

MnO₄

H₂SO₄

The temperature at which the vapour pressure of a liquid becomes equal to external pressure is

Choose an answer

Melting point

Sublimation point

Inversion point

Boiling point

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