The Central Rice Research Institute (now NRRI) is located in:

✅Explanation: The National Rice Research Institute (NRRI), formerly known as the Central Rice Research Institute (CRRI), is located in Cuttack, Odisha, India. It's a premier research institute dedicated to improving rice production and developing new rice varieties.
🔑Key Points:  
-The Central Rice Research Institute is located in Cuttack, Odisha.
-The institute not only played a key role in ushering the country of an ear of green revolution heading to self-sufficiency in food grain supply in about 25 years from its inception but also brought glory to the nation by providing research support in rice to become the second-largest exporter of rice in the world in the recent years.
-The CRRI is one of the Institutes of the ICAR under the Division of Crop Sciences.
-The Institute has two research stations-
-Central Rainfed Upland Rice Research Station (CRURRS), Hazaribagh, in Jharkhand,
-Regional Rainfed Lowland Rice Research Station (RRLRRS), Gerua, in Assam.
-These research stations were established to tackle the problems of rainfed uplands, and flood-prone rainfed lowlands, respectively.

🛑 Additional Information::
-The outbreak of devastating epiphytotic brown spot disease of rice (Helminthosporium spp)in the then Bengal province in 1942 resulted in a serious shortage of rice. 
-Added to this, the failure of the civil administration to cope with such a disastrous situation culminated in what was called the Great Bengal Famine of 1943. 
-With this background, the Central Government, in the year 1944, decided to intensify research on all aspects of the rice crops.
-In the following year, the Government decided to establish a Central Institute for Rice Research and this culminated in the establishment of the Central Rice Research Institute (CRRI) on April 23, 1946, at Bidyadharpur, Cuttack, Odisha with experimental farmland of 60 hectares provided by the Government of Odisha.