The correct answer is: Tamenglong district.
Chromite is an iron-chromium oxide mineral that is used in the production of ferrochrome, which is used in the manufacture of stainless steel and other alloys. The largest chromite deposits in Manipur are located in the Tamenglong district, which is in the northeastern part of the state. The chromite deposits in Tamenglong district are estimated to be worth over $1 billion.
The other options are incorrect. Ukhrul district is located in the northwestern part of Manipur and does not have any significant chromite deposits. Senapati district is located in the central part of Manipur and does have some chromite deposits, but they are not as large as the deposits in Tamenglong district. Chandel district is located in the southwestern part of Manipur and does not have any significant chromite deposits.
Chromite is a valuable mineral that is used in a variety of industries. The chromite deposits in Manipur have the potential to generate significant economic benefits for the state.