Zinc futures were marginally up by 0.32% to Rs 140.75 per kg as speculators created positions amid a firming trend in base metals overseas and better domestic demand.
At the Multi Commodity Exchange, zinc for delivery in August was up by 45 paise, or 0.32%, to Rs 140.75 per kg, with a business turnover of 131 lots.
The metal for delivery in September also rose by a similar margin to trade at Rs 141.30 per kg, with a business turnover of three lots.
Marketmen said besides a firming trend at domestic spot market, strength in select base metals at the London Metal Exchange, supported the upside in zinc prices at futures trade.