Question

Question 5 : High purity silicon is obtained from----------
Silicon dioxide
Silicon tetrachloride
Silicon hydroxide
Silicon dihydride

Question 6 : The three dimensional linkages makes diamond one of the
hardest
most beautiful
most expensive
slimmest

Question 7 : Which of these compounds is used as antiknock additives to petrol for internal combustion engines?
Tetramethyl lead
lead oxide
lead sulphate
lead chloride

Question 8 : The property by which elements form long chain compounds by single or multiple bond formation between atoms of the same elements is----
Catenation
Polymorphysm
Dention
Polimerization

Answer 1

Silicon tetrachloride

hardest

Tetramethyl lead

Catenation