What are displacement reactions? Give one example of the following:

Reactive metal displaces less reactive metal from its salt solution. 

Give one example for the following: 

Reactive metal displaces hydrogen from dilute acids. 

Which two observations will be made when quick lime is added to water? Mention two uses of the product obtained. 

Write the balanced chemical equation for the following reaction and identify the type of reaction.

In the Thermite reaction, iron$\left(\mathrm{III}\right)$ oxide reacts with aluminium and gives molten iron and aluminium oxide. 

Write the balanced chemical equation for the following reaction and identify the type of reaction in each case. 

Magnesium ribbon is burnt in an atmosphere of nitrogen gas to form solid magnesium nitride. 

Write the balanced chemical equation for the following reaction and identify the type of reaction. 

Chlorine gas is passed in an aqueous potassium iodide solution to form potassium chloride solution and solid iodine. 

Name the substance oxidised, substance reduced, oxidising agent and reducing agent in the following reaction: 

${\mathrm{CuSO}}_4+\mathrm{Zn}\to \mathrm{Cu}+{\mathrm{ZnSO}}_4$

Name the substance oxidised, substance reduced, oxidising agent and reducing agent in the following reaction: 

$\mathrm{Cu}+2{\mathrm{AgNO}}_3\to \mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2+2\mathrm{Ag}$