Question # 1

Water is purified by the process:

Choose an answer

Aeration

Coagulation

Chlorination

All of these

In the cyclic structure of the glucose when the position of atoms on carbon 1 is called one isomer changes to other. These isomers of glucose are called:

Choose an answer

metamers

position isomers

cis-trans

annomers

Isozymes are the enzymes which:

Choose an answer

have similar chemical properties

have similar physical properties

have different physical and chemical properties

The solid particles posses only ______ kinetic energy

Choose an answer

Translational

Rotational

Viberational

Circular

Surfactants are organic compounds; used in detergents which reduce the

Choose an answer

viscosity of water

surface tension of water

boiling point of water

wetting ability of water

The structure of sodium chloride is

Choose an answer

simple cube

body centered cubic

face centered cubic

depends upon conditions

Vapour pressure of a substance does not depend upon:

Choose an answer

physical state of matter

temperature

intermolecular forces

surface area

The temperature below which a gas does not exist is called its

Choose an answer

Inversion temperature

Critical temperature

Neutral temperature

Curie point

The electrical conductivity of the metals decreases with the increasing temperature. This is because

Choose an answer

the number of free electrons decrease

the bonds of the metal atoms become weak

the to and fro motion of the metal ions decrease

the increase of to and fro motion of the metal ions hinders the free movement of electrons

About 25% of earth crust mass is made up of element

Choose an answer

Oxygen

Silicon

Aluminium

Aluminates

Ice floats on water because

Choose an answer

the hydrogen bonding in ice is stronger than that of in water

empty spaces are left in ice

ice has two-dimensional structure

the bond length of the oxygen and hydrogen bond is different in water and ice

Ammonia contains nitrogen in it:

Choose an answer

46%

50%

80%

82%

Shielding effect intervening electrons causes

Choose an answer

Decreases in atomic radii in a period from right to left

Increase in atomic radii in a period from left to righ t

Decrease in atomic radii down the group

Increase in atomic radii down the group

Which of the following has magnesium?

Choose an answer

Carbonic anhydrase

Haemocyanin

chlorophyll

Vitamin B₁₂

The valence shell electronic structure of an element is ns²np⁵. The element will along to the group of

Choose an answer

Alkali metals

Inert metals

Noble gases

Halogen

Which is not a fossil fuel

Choose an answer

Petroleum

Coal

Natural gas

None of them

Choose an answer

Zero

1

2

1.5

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

Choose an answer

Formic acid

Acetic acid

Adipic acid

None of these

Ethanol is prepared in Pakistan form fermentation of:

Choose an answer

Starch

Sugar

Glucose

Molasses

Alkenes combine readily with electrophillic reagents such as halogens giving

Choose an answer

Haloalkanes

Gem-dihalides

Vicinal dihalides

Vinyl halides

Etherification is catalyzed by

Choose an answer

Acids

Gases

Salts

None of the these

Which of the following has highest dipole moment?

Choose an answer

NH₃

PH₃

AsH₃

SbH₃

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