Mountains, Hills, and Trekking Geography

Mountaineers carry oxygen cylinders with them because at high altitudes, oxygen becomes sparse which causes many complications in the human body. That’s why they need oxygen cylinders to breathe.

Yercaud is a well-known hill station located in the Shevaroy Hills range in the Eastern Ghats of Tamil Nadu.

The Eastern Ghats are a discontinuous range of mountains along India's eastern coast.

 Whenever we have "the" before blank, we use third degree superlative

The Chhotanagpur Plateau is known as the Ruhr of India due to its vast mineral resources, including coal, iron ore, and manganese.

Denali, formerly known as Mount McKinley, is the highest mountain peak in North America, located in Alaska. It reaches an elevation of 20,310 feet above sea level.

Bharti is the third Indian research station in Antarctica, located in the Larsemann Hills region, following Dakshin Gangotri and Maitri.

India's Eastern Ghats and Western Ghats meet at the Nilgiri hills. The Western Ghats Mountains are in the west. The Eastern Ghats Mountains meet the Western Ghats Mountains at Nilgiri Hills. The Nilgiri Hills are part of a larger mountain chain known as the Western Ghats. 

Greater Himalayas, Zanskar Range, Ladakh Range and Karakoram are the correct order from South to North. The Himalayas does not stand alone in the northern reaches of South Asia. To its north are the parallel and lesser ranges of Ladakh, Zaskar and Kailas. From northern Kashmir, the Karakoram stretches out over the disputed borders of India with Pakistan and China. 

Sabarmati rises in the Aravallis. Sabarmati river rises in the Aravali hills, which roughly mark the western boundary of Udaipur District, i.e. Mount Abu area, and flows in a south-westerly direction. 

The Caucasus Mountains are located between the Black Sea and the Caspian Sea.

One of the significant lake-forming force is movement of the tectonic plates that form the Earth's crust. When adjacent plates separate at fault lines, the steep, narrow gap between them can result in the formation of a graben. Some of the largest, deepest, and oldest lakes on Earth are graben lakes. Perhaps the most famous graben lakes are Lake Baikal, Lake Tanganyika and Rudolf.

Dhaulagiri is a mountain in the Himalayas with an elevation of 8,167 meters, which is higher than the other options listed (Annapurna is 8,091m, Nanda Devi is 7,816m, Badrinath is significantly lower).

Himachal Pradesh is generally divided into three main physiographic zones or mountain ranges: the Outer Himalayas (Shivaliks), the Inner Himalayas (Lesser Himalayas), and the Greater Himalayas.