I expect the other way. I thought more people are interested in Index future than a particular stock future. I read at The Nifty Futures – Varsity by Zerodha that, nifty future are the most liquid contract in the Indian derivative markets.
I think I’m not getting something right here.
Try comparing turnover
Vol can be skewed sometimes if the price differences are very large as in this case
After many re discovered the world of Option"s Trading , specially by Retail Traders , including me , initially i was a Future Trader many stopped trading in Futures , Taxation and Brokerage and also increase in margin by SEBI , i think only 10% of trading volume in Fututre happening compared to earlier 
what will be the turnover in this case? and how to measure or see it?
Price or avg traded price into volume