Mcx commodity tips: Zinc futures were trading higher in the domestic market on Friday as investors and speculators booked fresh positions in the industrial metal amid a pickup in physical demand for zinc in the domestic spot market. Further, a leading index for China signaled a pickup in growth in the world’s second biggest economy, lifting the demand outlook for zinc. The China leading index climbed 1.1 per cent in April from March, when it rose 0.5 per cent. At the MCX, Zinc futures for May 2015 contract is trading at Rs 139.85 per 1 kg, up by 0.11 per cent after opening at Rs 140.10, against the previous closing price of Rs 139.70. It touched the intra-day high of Rs 140.65.