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CBSE / Chemistry Questions

Total Questions 1082
Q:Describe Proton?
What are the limitations of a chemical equation ?
Copper is precipitated when an iron wire is added to a solution of copper sulphate. Write the equation and indicate which species is oxidised and which is reduced ?
How are the decomposition reactions useful in the metallurgical processes ?
How can a balanced chemical equation be made more informative ?
Define neutralisation. Give examples ?
GIVE REASON 1.A GAS EXERTS PRESSURE ON THE WALLS OF THE CONTAINER? 2.WE CAN EASILY MOVE OUR HAND IN AIR BUT TO DO THE SAME THROUGH A SOLID BLOCK OF WOOD WE NEED A KARATE EXPERT?
SIR, HOW WE CAN SAY THAT SIR ROBERT BOYLE AND SIR JOHN DALTON ARE THE FATHER OF MODERN CHEMISTRY?
WHO IS KNOWN AS THE FATHER OF CHEMISTRY?
is melting of ice a physical or chemical change ?
what is a nichrome
what do you mean by aqua regia?
What is matter ?
difference between ions and polyatomic ions?
what do you mean by reverse osmosis?
IT IS SAID THAT AN ATOM CONTAINS 8 ELECTRONS IN THE OUTER MOST SHELL(EXEPT H &He)EVEN IF THE NUMBER OF ELECTRONS IN A SHELL IS GIVEN BY THE FORMULA 2(n*n). can u please explain why is it so?
write periodic gases and their symbols
what is Gravitational force?
WHO IS THE FATHER OF CHEMISTRY?
In what state water is present in moon?