Chemistry
State the type of reactions and give one equation in each case.
(a) Two or more reactants combine to form a single product.
(b) A single reactant breaks up into two or more products.
Related Questions
Write the chemical reaction where the following changes are observed.
(a) Gas is evolved
(b) Colour change is noticed
(c) Precipitate is formed
(d) Physical state of reactants is changed
Give a reason for the following :
(a) Silver nitrate solution is kept in coloured bottles.
(b) Molybdenum is used in the manufacture of ammonia.
(c) A blue solution of copper sulphate changes to green when a piece of iron is added to this solution.
(d) Colourless concentrated sulphuric acid in a test tube changes to blue on adding a small piece of copper to it.
Give an example of each:
Combination reaction in which:
(i) An element of valency 3 combines with nitrogen.
(ii) A non-metal oxide reacting with water to form an acid.
(iii) A metal oxide reacting with water to form its hydroxide.
Give an example of each:
Write the decomposition reactions for the following:
(i) Metallic oxide on heating forms metallic oxide and oxygen.
(ii) A compound on heating gives a gas which turns lime water milky.
(iii) A white hydroxide on heating gives a yellow residue and water vapours.