Decomposition of calcium carbonate liberates
O2
N2
CO
CO2
The type of chemical change in CuCO3 → CuO + CO2 is
Combination
Displacement
Double decomposition
Decomposition
Metal reacts with hydrogen to form
Hydrates
Hydrides
Oxides
Hydroxides
When Zinc is added to dilute hydrochloric acid, the gas liberated is
Hydrogen
Oxygen
Chlorine
Nitrogen
Magnesium ribbon burns with dazzling light and gives white ash called
Magnesium chloride
Magnesium oxide
Magnesium nitrate
Magnesium hydride
On heating lead nitrate, a pale yellow substance left is
Lead oxide
Lead sulphate
Lead hydride
Lead nitride
Calcium hydroxide is formed from
CaO
CaCO3
CaSO4
CaCl2
When bromine is reacted with potassium iodide (KI), the gas liberated is
Iodine
Bromine
Flourine
Reaction of silver nitrate with sodium chloride to give silver chloride and sodium nitrate is an example for
Displacement reaction
On burning Sulphur with oxygen, Sulphur dioxide is formed, It is an example for
