Vulcanisation of Rubber

Q. Who invented vulcanisation of rubber?

1. Antoine Lavoisier
2. Friedrich Wohler
3. Charles Goodyear
4. Henry Ceat

Q. Heating of rubber with sulphur is known as

1. Vulcanisation
2. Bessemerisation
3. Galvanisation
4. Sulphonation

Q. Which of the following is used in vulcanization of rubber?

1. CF₄
2. Cl₂F₂
3. C₂F₂
4. SF₆