Yadav's hat-trick was the highlight of a superb bowling effort by the Indians before they survived a collapse of their own to finish at 92 for five in 22.3 overs.
On a pitch, which seemed to be loaded in favour of the bowlers, Scotland won the toss and opted to bat. The decision backfired as the Indian bowlers wrecked havoc.
Kuldeep and Aamir Gani were the pick of Indian bowlers with four wickets apiece. But Kuldeep shone brighter with his historic feat, which came in the 19th and 21st over.
Nick Farrar (0), Kyle Stirling (0) and Alex Baum (5) were the batsmen to fall to Kuldeep in the spectacular spell.
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The tweaker had Farrar caught by Deepak Hooda at square leg, before trapping Stirling LBW off his last delivery in the 19th over.
He was brilliantly backed by off-spinner Gani, who ended Umeed's resistance by piercing his bat and pad to rattle his stumps. Later he cleaned up the tail to complete a dominating bowling display by the Indians.