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
Question 11 : Which of these is not a form of carbon?
carbon black
carbon hydride
Coke
charcoal
Question 12 : Which of these elements shows polymorphism?
Pb
Sn
Si
C
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
APPROVED BY CLIENTS
Finding a professional expert in "partial differential equations" in the advanced level is difficult.
You can find this expert in "Assignmentexpert.com" with confidence.
Exceptional experts! I appreciate your help. God bless you!
Comments
Leave a comment