The Lepchas are the aboriginal inhabitants of Sikkim and they are mostly settled in North Sikkim. Some populations can also be found in WB, Nepal, Bhutan, etc. So, statement 1 is NOT correct. The Lepcha have their own language, also called Lepcha. It belongs to the Bodish- Himalayish group of Tibeto-Burman languages. The Lepcha write their language in their own script, called Rng or Lepcha script, which is derived from the Tibetan script. It was developed between the17th and 18th centuries. So, statement 2 is correct. Khaddar is a shawl woven in Punjab. So, statement 3 is NOT correct.