Answer: C

Explanation:

Geologically, the peninsular plateau is the oldest part of the earth's surface, while the Himalayas and the northern plains are recent topography. According to geologists, the Himalayan Mountain is an unstable part. The entire Himalayan mountain range shows a young topography, with high peaks, deep valleys and fast flowing rivers. The northern plains are made up of alluvial deposits. The peninsular plateau is made up of low hills and wide valleys made up of igneous and metamorphic rocks. Hence, statements 1 and 2 both are correct.

Answer: A

Explanation:

The geographical features of India can be divided into various categories such as Himalayan mountain range, northern plains, peninsular plateau, Indian desert, coastal plains and islands. Hence, option (a) is correct.

Answer: C

Explanation:

The Himalayas extending along the northern border of India are geologically young and structurally folded mountain ranges. These mountain ranges extend from Indus to Brahmaputra in the west-east direction. The Himalayas are the highest mountain range in the world and one of the most uneven barriers. They form a semicircle extending over a length of 2,400 km. Its width is 400 km in Kashmir and 150 km in Arunachal. Hence, statement 1 is incorrect.

On the basis of longitudinal extension, we can divide the Himalayas into three parts. A large number of valleys are found between these ranges. The range located in the northernmost part is called the Great or Inner Himalayas or Himadri. This is the most continuous range, which has the highest peaks with an average height of 6,000 meters. Hence, statement 2 is incorrect.

Answer: C

Explanation:

Kanchenjunga (8,598 m) is located in the Eastern Himalayas on the border between the state of Sikkim, Northeast India and Eastern Nepal. This mountain is a part of the Great Himalayan range. It is the highest peak in India and the third highest peak in the world.

Nanda Devi (7,817 m) is the second highest peak in India and the 23rd highest peak in the world. Nanda Devi peak is located in the Himalayan mountain range in the state of Uttarakhand, India, between the Gauriganga valley in the east and the Rishiganga valley in the west.

Namcha Barua (7,756 m) is a mountain in the Arunachal Himalaya. It is considered the easternmost point of the Himalayas. It is located in the extreme east of the Indian state of Arunachal Pradesh.

Gurla Mandhata (7,728 m) is the highest peak in the Nalkankar Himalaya, a small subrange of the Himalayas. It is located in Burang County, Ngari Prefecture in the Tibet Autonomous Region, near the northwest corner of Nepal. It is named after King Mandhata of the Suryavansha of the Ikshvaku dynasty.

Mount Annapurna (8,078) is the tenth highest mountain in the world. It is in the Annapurna Range of the Nepal Himalaya. The range is bounded by the Kali Gandaki Gorge to the west, the Marshyangdi River to the north and east, and the Pokhara Valley to the south.

Answer: B

Explanation:

The range situated to the south of Himadri is mostly Assam and is known as Himachal or Lower Himalayas. These ranges are mainly made up of highly compressed and transformed rocks. Their height is between 3.700 meters to 4.500 meters and the average width is 50 kilometers. Hence, option (b) is correct.