Zinc prices on Wednesday rose Rs 1.85 to Rs 252.95 per kilogram in the futures trade amid a pick up in spot demand. On the Multi Commodity Exchange, zinc contracts for August delivery traded higher Rs 1.85 or 0.74 per cent at Rs 252.95 per kg with a business turnover of 2,022 lots. Marketmen said the widening of positions by participants, following a pick-up in demand from consuming industries kept zinc prices higher in the futures trade.