Sulphur And Its Compounds - 5


1. ________ is used in the vulcanization of rubber, a process which converts soft pliable rubber into hard.


2. sulphuric acid was first prepared in the laboratory by a muslim scientist, ________.


3. Sulphur reacts with copper at high temperature to produce ________.


4. Rhombic sulphur is insoluble in water, but soluble in ________.


5. ________ sulphur is the only stable allotrope at room temperature.


6. Sulphur melts at ________ and boils at ________ .


7. Sulphur exists as ________ molecules at room temperature.


8. Sulphur is extracted from underground by _


9. ________ is used in the manufacture of explosives and fireworks.


10. Sulphur reacts with chlorine to form ________.


11. The chemical formula of oleum is ________.


12. The chemical formula of calcium dihydrogen phosphate is ________.


13. Dilute sulphuric acid reacts with metals to produce ________ gas.





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