Taruwar Kohli remained unbeaten on 96 on day two after Mizoram were bowled out for 198 in their first innings in reply to Uttarakhand's first innings total of 377 at the Rajiv Gandhi International Cricket Stadium here.
Asked to bat again, Mizoram were 32/1 at stumps, still needing 147 runs to avoid an innings defeat.
Earlier the visitors were 31 for no loss but they slipped to 67/4 with Sunny Rana (2/46) striking twice.
Dhanraj Sharma was the pick of the bowlers, claiming 3/49.
Taruwar found some support at the other end from Lalhruai Ralte (30) as the duo added 57 runs to repair the damage.
But Mayank Mishra dismissed Ralte to break the partnership before they folded in 75.2 overs.
Mizoram: 198 in 75.2 overs (Taruwar Kohli 96 not out; Dhanraj Sharma 3/49) and following on 32/1 in 12 overs.
Nagaland: 467 in 106.3 overs (Hokaito Zhimomi 177, Rongsen Jonathan 123, Nitesh Lohchab 100; Raiphi Gomez 3/59, Pankaj Singh 3/118).
Puducherry: 224/3 in 66 overs (Paras Dogra 109 batting, Sai Karthik 81).
In Goalpara: Arunachal Pradesh 169 and 104/8 in 43 overs (Techi Neri 20 batting, Deendyal 17 batting; Ishwar Chaudhary 5/49).
Bihar: 257 in 63.1 overs (Vivek Kumar 40; Priyojit Singh 5/74, Bishworjit Konthoujam 5/74).