Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science) 
		 
			 
			 
			 
			 
			 
			 
			 
			 
			 30 points
 30 points 
 
 
 
             
            

 
                
Pinky chaudhary![best-answer]() 
			
kisi n carbon k 2 atoms within the plane hote h or bki 2 atoms out of plane rhte h h.. isliye ek ring within plane hogi bt jis carbon se wo ring attached h us carbon k 2 atom out of plane honge.. similarly dusri ring out of plane hogi but use ek carbon k bki 2 atoms within in plane rhenge.. over all ek ring within the plane hoti h pr carbon se attached bki 2 atoms out of plane rhte h. dusri ring out of plane rhti h and carbon k bki 2-atoms within the plane rhenge