Uses of Alkali Metals

Q.

A substance ‘X’ is used in white-washing and is obtained by heating limestone in the absence of air. Identify ‘X’.

1. 
   CaOCl2
2. 
   

   CaSO4

3. 
   

   CaO

4. 
   

   CaCO3

Q.

Potash alum is an example of a:

1. Simple salt

2. Complex salt

3. Acid salt

4. Double salt

Q.

Write the formula of the following salt:

Aluminum sulfate

Q.

A substance ‘X’ is used in white-washing and is obtained by heating limestone in the absence of air. Identify ‘X’.

1. 
   CaOCl2
2. 
   

   CaSO4

3. 
   

   CaO

4. 
   

   CaCO3

Q.

What drugs treat personality disorders?

Q.

Write down the names of compounds represented by the following formulae: [ 5 MARKS ]

1. Al₂ (SO₄)₃

2. CaCl₂

3. K₂SO₄

4. KNO₃

5. CaCO₃