
Give a word equation for the following reaction:
An exothermic reaction where both the reactants are gases, one of which is oxygen.

Important Questions on Language of Chemistry
Name the following:
The silvery residue obtained on heating mercury oxide.


Name the following:
Two non-metals react explosively when brought into close contact.

Name the following:
Two gases react under pressure in presence of a catalyst at elevated temperatures to give a gaseous product.

Name the following:
A catalyst increases the rate of a chemical reaction. [This catalyst is the compound of Manganese]

Give reason for the following:
Even though rusting is an exothermic reaction, the heat evolved when an iron nail rusts are unnoticeable.

Give reason for the following:
Electrolytic decomposition of water is a reaction involving change of state.

Give reason for the following:
A characteristic change of colour is seen when a piece of iron is added to copper [II] sulphate solution.
