Zinc futures for May traded lower by Rs 1.30, or 1.33%, to Rs 100.20 per kg in 247 lots.
At the Multi Commodity Exchange (MCX), the April contract fell by Rs 1.45, or .25% to Rs 98.65 per kg in 2,855 lots.
Zinc prices fell as speculators reduced their positions amid subdued domestic demand.
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At the London Metal Exchange (LME) zinc lost 3.2%.
Weak trend overseas where base metals weakened were triggered on demand concern as the International Monetary Fund (IMF) lowered its outlook for world economy.