Question

The northern part of western ghat is known as __________________.
A. Sahyadri range
B. Annamalai range
C. Nilgiri range
D. None of these

Answer 1

Hint:Many hill stations, such as Matheran, Lonavala-Khandala, Mahabaleshwar, Panchgani, Amboli Ghat, Kudremukh and Kodagu, are home to this range. After the Himalayas, the range is the biggest mountain range in India, stretching from the Tapi river valley to the Nilgiri.

Complete answer:
Option A. Sahyadri range
The Western Ghats is a mountain range, also the "Sahyadri" (The Mountain of Patience).
The West Ghat or Sahyadri Range is the largest mountain range in India after the Himalayans from the Tapi to the Nilgiri. In the north of Maharashtra, the range is called Sahyadri and in Kerala, Sahya Parvatham.Many mountain resorts such as Matheran, Lonavala-Khandala, Mahabaleshwar, Panchgani, Amboli Ghat, Kudremukh and Kodagu are located in this range. In northern Maharashtra, the Western Ghats are known as Sahyadri. Hence this is the correct option.
Option B. Annamalai range
The Anaimalai or Anamala Hills, also known as the Elephant Mountains, are the range of mountains that make up the western Ghats' southern portion and span the southern Indian border of Tamil Nadu and Kerala. The southern part of western ghat is known as Annamalai range. Hence this is the incorrect option.
Option C. Nilgiri range
The Nilgiri Mountains form part of the Western Ghats in western Tamil Nadu.
Since at least 1117 CE, the word Nilgiri, derived from Sanskrit neelam (blue) + giri (mountain), has been in use. The bluish flowers of kurinji shrubs are believed to have given rise to the name. The Nilgiri Hills are part of the Reserve of the Nilgiri Biosphere and form part of India's protected bio-reserves. The Western part of western ghat is known as Nilgiri range. Hence this is the incorrect option.
Option D. None of these
The northern part of western ghat is known as Sahyadri range. Option A. is Sahyadri range is the correct option. Hence this is the incorrect option.

Therefore, from the above explanation, we can conclude that Option(A).

Note:The Nilgiri Biosphere is the famous Western Ghats Biosphere Reserve.
The Ghats of the West are older than the Himalayas.
The erosion of the Gondwana supercontinent led to the creation of peninsular India, and the Western Ghats were formed by further erosion of the Deccan plateau.