Explore topic-wise MCQs in Chemistry.

Antimony is

In photography, the compound of nitrogen used is

Rutherford's alpha-scattering experiment related to the size of the

Cutting and peeling of onion brings tears to the eyes because of the presence of _____ ?

A mixture of sand and naphthalene can be separated by

Which one is not metal

What is the structure of IF7 ?

The credit for the discovery of transuranic element goes to

In known elements, the maximum number is of

When formaldehyde and potassium hydroxide are heated, we get

Boron cannot form which one of the following anions?

Which one of the following is not radioactive

The hard Shell of an egg was dissolved in HCL. The egg was then placed in a concentration solution of NaCl. What will happens ______

Temporary hardness is due to the presence of

Cathode rays are

How many moles are there in 140g of Si (atomic mass of silicon is 28)

The father of modern chemistry is

The activity of rradioisotope change with

A device used for the measurement of radioactivity is

Thenitrogen atom has 7 protons and 7 electrons,The nitride ion will have

Which one of the following is a natural colloid ?

Which of the following is a regenerated fibre?

'Minamata' disease was caused by ?

Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at ?6 C will be: (Kf for water = 1.86 Kg/mol and molar mass of ethylene glycol = 62 kg/mol)

The main element used in the vulcanisation of rubber is

Number of moles of solute present in 1 litre of solution is

A bond formed by sharing of electrons between atoms of the element is called

An alloy is

Atomic weight of an element is given by

Which one of the following elements is the poorest conductor of heat

The fundamental particles present in equal numbers in neutral atoms are

In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is

A particle which is similar to electron is

' Misch metal ' is widely used in manufacture of which of the following

A radioactive substance has a half life of four months, three-fourth of the substance would decay in

How many electrons are there in Na+

In nuclear reactor,Chain reaction is controlled by introducing

' Yellow cake ' an item of smuggling across border s

Which one is the pure element

Which one of the following is not a mixture

Electromagnetic radiation with maximum wavelength is

A ?breath test? used by traffic police to check drunken driving uses ____?

In nuclear reactor the speed of neutrons is slowed down by

Permanent hardness of water is due to the presence of ?

Gold and silver are extracted from their respective ores by _______

Artificial radioactivity elements are present in

Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of :

Van der Waal's equation explains the behaviour of _____

"If a system A is in thermal equilibrium with B and B is in thermal equilibrium with C, then A and C are in equilibrium with each other". This is a statement of

Group displacement law was given by