Vulcanisation is carried out to improve the physical properties of rubber. Explain the process of vulcanisation of rubber.

What is the function of sulphur in the vulcanisation of rubber

Which percentage of sulphur is used in the vulcanisation of rubber?

What is/are incorrect regarding vulcanisation of rubber?

The characteristic properties of natural rubber can be varied by vulcanisation. Illustrate.

In the manufacture of tyre rubber, during vulcanisation

Natural rubber is an elastomer. Briefly explain the properties of elastomers.

In Haber's process, ammonia is manufactured according to the following reaction N_(2(g)) + 3H_(2(g)) hArr 2NH_(3(g)) , Delta H^(@) = -2.4 kJ The pressure inside the chamber is maintained at 200 atm and temperature at 500^(@)C . Generally this reaction is carried out in presence of Fe catalyst. The preparation of ammonia by Haber's process is an exothermic reaction. If the preparation follows the following temperature pressure relationship for its % yield. Then for temperature T_(1), T_(2) and T_(3) , the correct option is :

Rubber is a natural polymer obtained from the bark of rubber trees vuclanisation improves elasticity of rubber. What is vulcanisation?

Assertion : During calcination, the ore is heated well below its melting point in the limited supply of oxygen. Reason: The process of calcination is carried out for sulphide ores. (1) If both (A) and (R) are correct and (R) is the correct explanation of(A). (2) If both (A) and (R) are correct, but (R) is not the correct explanation of (A). (3) If (A) is correct, but (R) is incorrect. (4) If both (A) and (R) are incorrect.