Jammu and Kashmir have finished their campaign at seventh spot with 19 points.
Tiwary scored a fine 134 in 260 deliveries which included 13 boundaries.
For Jharkhand, Yadav returned with figures of five for 16 in his 11.4 overs, while Roy snapped three for 27 in his seven overs.
This win over Assam puts J&K at fifth place in Group C.
For J&K, Irfan Pathan and captain Parvez Rasool were the pick of the bowlers with three wickets each.
For J&K, Nazir and Sharma were the pick of the bowlers with three wickets each.
Santanu Mishra and Subhranshu Senapati hit half-centuries as Odisha defeated Jammu and Kashmir in a comfortable chase of 196.
The hosts have taken a lead of 76 runs with a day’s play and three wickets remaining.
Jammu and Kashmir managed to take first innings lead over Uttar Pradesh, bundling out the visitors for 188 after J&K had posted 290, but in their second dig, the home team were undone by left-arm spinner Saurabh Kumar’s 5/21, that reduced J&K to 98/7 on day two of round five of Ranji Trophy 2018-19 season...
Jammu and Kashmir’s debutant Aakash Choudhary claimed 3/17 in his seven overs to reduce Uttar Pradesh to 31/3