In a chemical reaction between sulphuric acid and barium chloride solution the white precipitates formed are of:

The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of:

A chemical reaction does not involve:

One of the following processes does not involve a chemical reaction. That is:

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

All the methods mentioned below can be used to prevent the food from getting rancid except:

i. Storing the food in the air-tight containers

ii. Storing the food in refrigerator

iii. Keeping the food in clean and covered containers

iv. Always touching the food with clean hands

Rusting of iron involves a chemical reaction which is a combination of:

The given chemical reaction represents:

When ferrous sulphate is heated strongly it undergoes decomposition to form ferric oxide as a main product accompanied by a change in colour from:

Which of the following gases is used in the storage of fat and oil containing foods for a long time?

The given diagram of experimental set-up is used to carry out:

The displacement reaction between iron (III) oxide and a metal X is used for welding the rail tracks. Here X is:

The neutralization reaction between an acid and a base is a type of:

The chemical reaction between Hydrogen sulphide and iodine to give Hydrogen iodide and sulphur is given. The reducing and oxidizing agents involved in this redox reaction are:

Which of the following does not corrode when exposed to the atmosphere-

Rusting of an iron is an example of

Combination of phosphorus and oxygen is an example of:

A substance which oxidized itself and reduces other is known as :

The reaction in which two compounds exchange their ions to form two new compounds is