Question 5 :
<span>Rigid three dimensional structure of carbon allotrope forming 4 bond with each carbon is called as:<br/></span>

Question 6 :
The number of times the substituent group occurs is indicated by :

Question 10 :
Which of the following carbon compounds are linked by only single bonds between carbon atoms?

Question 11 :
Give the IUPAC name for $H_3C\! -\! CH_2\! -\! CH_2\! -\! OH$.<br/>

Question 12 :
In the Earth's crust, Carbon is found in the form of_________.

Question 13 :
An allotropic form of carbon used for cutting&#160;and drilling is :

Question 14 :
Fullerene, an allotrope of carbon, has 60 carbon atoms&#160;joined together and no other element in it. There are&#160;various types of fullerenes. $C_{60}, C_{70}, C_{74}$&#160;and $C_{78}$ are&#160;the members of the fullerene family. Identify the&#160;property due to which such large numbers of carbon&#160;atoms are joined together in this molecule<span>&#160;:</span>

Question 16 :
Which one of the following is not a property of carbon?

Question 18 :
<div>Which of the following compounds will fall in the same homologous series of formic acid $(H-COOH)$?&#160;</div>