Chemistry in Everyday Life

Consider the following statements :
(i) Washing soda on strong heating gives sodium oxide and carbon dioxide.
(ii) Plaster of Paris is obtained by heating gypsum at $373$K.
(iii) Bleaching powder is used for disinfecting drinking water.
Which of these statements(s) is/are correct?

Which of the following can be used for removal of stains of rust on clothes?
$1.$ $H_2{O}_2$
$2.$ Oxalic acid
$3.$ Petrol
$4.$ Alcohol

Consider the following statements: Hard water is not suitable for:
1. Drinking
2. Washing clothes with soap
3. Use in boilers
4. Irrigating crops
Which of these statements are correct?

Soap helps in cleaning of clothes because _____.

Which among the following is the correct chemical formula of baking soda?

Washing soda is represented by which of the following chemical formula?

Which one of the following is NOT true for bleaching powder?

Match List-I with List-II and select the correct answer from the codes given below:

A detergent is a_____.

$N{a}_{2}C{O}_3·10H_{2}O$ is the chemical formula for which of these following hydrates?

Which of the following is used as an oxidizing agent in many textile industries?

${\text{Na}}_2{\text{CO}}_3$ is a chemical name for which of this household product?

The process of melting that changes solid state into a liquid state is also known as?

Sub atomic particles of atoms are ______.

If there is a black coating on silver and the green coating on copper, then these are examples of ____________.

Aluminium is obtained by the electrolysis of pure $A{l}_2{O}_3$ dissolved in

Glucose is a type of:

Match the following.
A.Copper sulphate     1. Fertiliser
B.Penicillin                2. Insecticide
C.Urea                      3. Fungicide
D.Malathion               4. Antibiotic
 

Water and ice crystals are in equilibrium at $0°\mathrm{C}$. When pressure is applied to this system

The unit of rate of reaction is-