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)
		
			
			
			
			
			
			
			
			
			
			
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Suman Kumar
See this
-ve on benzene can react with other molecule. But -ve on BF3 can't react.