Chemical Reactions Quiz

Oxidation is a process which involves

• Addition of Oxygen

• Addition of Hydrogen

• Addition of Nitrogen

• None of the above

A substance added to food containing fats and oils is called

• Oxidant

• Rancid

• Coolant

• Antioxidant

The correct formula of rust is

• Fe2O3

• Fe3O4

• Fe2O3.xH2O

• Fe2O4.xH2O

Pb + CuCl2 --> PbCl2 +Cu The above reaction is an example of

• Combination

• Decomposition

• Displacement

• Double Displacement

The reaction of H2 gas with oxygen gas to form water is an example of

• Combination reaction

• Redox reaction

• Endothermic reaction

• All of these

MnO2 + 4HCl --> MnCl2 +H2O +Cl2 The above reaction is an example of

• Oxidation

• Reduction

• Combination

• Displacement

Burning of Coal is

• Exothermic Reaction

• Endothermic Reaction

• Oxidation Reaction

• None of these

Randicity occurs when oily foods are

• Oxidised

• Reduction

• Decomposed

• All of these

It is necessary to balance a chemical equation in order to satisfy the law of

• Conservation of motion

• Conservation of mass

• Conservation of momentum

• Conservation of energy

When a gas is passed through lime water it becomes milky, the gas may be:-

• NO2

• NH3

• CO2

• None of these