Question

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

Question 9 : Artificial diamond can be produced by quenching----
a solution ofsilicon in lead
a solution of carbon in iron
a solution of carbon in lead
a solution of carbon in tin

Question 10 : Which of these two elements are important components of semiconductors and transistors?
Sn and Pb
Si and Pb
,Ge and Sn
Si and Ge

Answer 1

Question 6: hardest;
Question 7: Tetramethyl lead;
Question 8: Polimerization;
Question 9: a solution ofsilicon in lead;
Question 10: Si and Ge ;