Gold was poised for a second weekly gain on Friday, drawing support from a softer dollar which offset higher US bond yields and rising expectations central banks could begin easing economic support. Spot gold rose 0.2 per cent to $1,786.53 per ounce by 0905 IST. US gold futures gained 0.4 per cent to $1,788.20. Bullion prices were en route to a second week of gains, aided by a