Explore topic-wise MCQs in Chemistry.

Air is

Which one of the following laws explain the formation of carbon monoxide and carbon dioxide from carbon and oxygen

Discovery of the nucleus of an atom was due to the experiment carried out by

The alpha-particles are

Washing soda is

Which one of the following orders presents the correct sequence of the increasing basic nature of the given oxides?

Modern periodic table is based on atomic number of the elements. The significance of atomic number was proved by the experiment of ________

The freezing point of water at 760mm pressure is

The most abundant metal in earth crust is

The metal which reacts most violently with with cold water is

An atom has 7 electrons in its M - shell and contains 18 neutrons in its nucleus. What is its mass number

Hydrogen bomb is based on the principle of

The discovery of neutron became very late because

The Kinetic energy of gas molecules

Which one of the following laws directly expalins the law of coservation of mass

In atomic reactors,graphite is used as

Which is the Lightest of all the metals?

Which of the following is an element

Which of the following is the mixture

Energy produced in nuclear reaction is given by

Who present the theory of radioactive disintegration

A Radioactive subatance emits

The atoms of the elements having same atomic number but different mass number are called

Of the following elements, which one has the same oxidation state in all of its compounds?

In isotopes the number of neutrons are

Of the following radiations, the most easily stopped by air

In the making of jewels, gold is usually mixed with

Which of the following is called 'the King of Chemicals' ?

Whcih one is the compound in the following

Milk is a

The oldest known organic compound is

Which one is not the isotopes of hydrogen

If people sleep in closed rooms where charcoal fire is burning, they die due to

Which is the gas used for making vegetables and vanaspathi from vegetable oils?

Is C2 Paramagnetic or Diamagnetic?

Which of the following is the strongest acid?

Nucleons are

Number of moles of CO2 present in 24 grams of carbon is

In addition to nitric acid, another acid which may render iron passive is

Which one of the following can be oxidised to the corresponding carbonyl compound:

Neutrino has

Dimond is

A mixture of ethyl alcohol and water can be seperated by

Select the correct statement (s).

The atoms of the elements which have same number of neutrons are called

The atoms of the elements having same mass number but different atomic number are called

Glass is a.........mixture of metallic...........

The element that has the highest first ionization potential is.......

The process that takes place in the atom bomb is

Dust particles in the air of large industrial cities are removed by