Question 1 : Mixed chloroflorocarbons are known as ---------------
teflon
halides
Freons
carbenes
Question 2 : The following are crystaline forms of silica, except------------
tridymite
quartz
cristobalite
Crystaamite
Question 3 : Aqua regia is a mixture of Nitric acid and----------------
concentrated Hydrochloric acid
conc sulphuric acid
limewater
water
Question 4 : Solid CO2 is known as----
dry ice
hydrocarbon
Teflon
carbene
Question 5 : The purest form of silicon dioxide is----
cristobalite
silibolite
rock crystal
silicates
1
Expert's answer
2017-03-28T21:54:03-0400
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