Kangchenjunga is the highest mountain peak in India having 8586m. Mount K2/Godwin Austen is situated in Pakistan
Highest mountain peak in India - Mount K2. It is situated in POK (PaK occupied Kashmir)
Highest mountain peak that is situated completely in India - Kanchenjunga. It is in Sikkim.
Or they can ask like Highest mountain peak situated in non conflict region of India - Kanchenjunga