The correct answer is: a) East Kameng
One of the largest graphite deposits in India is found in the East Kameng district of Arunachal Pradesh. The deposit is located in the Bomdila area and is estimated to contain about 10 million tonnes of graphite. The graphite is of high quality and is used in the manufacture of electrodes, lubricants, and other products.
The other options are incorrect because:
- b) West Kameng does not have any large graphite deposits.
- c) Lohit has some graphite deposits, but they are not as large as those in East Kameng.
- d) Subansiri does not have any graphite deposits.
Graphite is a mineral that is composed of carbon atoms arranged in a hexagonal lattice. It is a soft, black, and lustrous mineral that is used in a variety of applications, including the manufacture of electrodes, lubricants, and other products. Graphite is also used in the production of nuclear fuel.