Indian Geography

The Surma Valley is located in Assam, northeastern India. It's part of the Barak Valley region through which the Surma River flows.

Gandhi Sagar Dam is built on the Chambal River and forms the boundary between Rajasthan and Madhya Pradesh. It is the first of the four dams built on the Chambal River.

Hussain Sagar Lake is located in Hyderabad, Telangana (formerly Andhra Pradesh). It was built in 1562 by Hussain Shah Wali during the reign of Ibrahim Quli Qutb Shah and connects the twin cities of Hyderabad and Secunderabad.

 Jaisalmer is the most driest place in India.

In India's administrative system, district roads are maintained by Zila Parishads (district-level local governments) and state PWDs, not by central government agencies. NHAI (National Highways Authority of India) maintains national highways, CPWD (Central Public Works Department) handles central government buildings, and SPWD (State Public Works Department) maintains state highways - none maintain district roads specifically.

NH 7 (now renumbered as NH 44) was historically the longest National Highway in India, spanning from Varanasi in Uttar Pradesh to Kanyakumari in Tamil Nadu, covering approximately 2,369 km. NH 1 (Delhi-Amritsar), NH 3 (Mumbai-Agra), and NH 4 (Mumbai-Chennai) were all significantly shorter in comparison.

Correct option is (2). 

Correct answer is (4). 

Arunachal Pradesh

Nathu La is a high-altitude mountain pass located in Sikkim, connecting India with China's Tibet Autonomous Region. It's one of the oldest trading routes and was re-opened for trade in 2006. Meghalaya, Himachal Pradesh, and Jammu and Kashmir have other passes but not Nathu La.

Nainital is known as the Lake District because it has numerous natural lakes including the famous Naini Lake. The city was built around this lake and the region contains several other tectonic lakes like Bhimtal, Naukuchiatal, and Sattal. The other options - Almora, Pithoragarh, and Uttarkashi - are hill stations but not specifically known for lakes.

The Bhabar belt is a narrow belt running along the foothills of the Himalayas (Himalayan Piedmont zone) where the streams disappear into the ground. It consists of porous rocks and pebbles deposited by the Himalayan rivers, allowing water to percolate underground. The other options are not associated with this piedmont alluvial feature.

The Amarnath Caves are located in Jammu and Kashmir, in the Anantnag district of the Kashmir Valley. These limestone caves are famous for the naturally formed ice Shiva Lingam and are an important Hindu pilgrimage site visited during July-August. The caves are situated at an altitude of 3,888m in the Himalayas.

Chandra Prabha Bird Sanctuary is located in Chandauli district of Uttar Pradesh. It was established in 1986 and covers an area of about 7,900 hectares. The sanctuary is home to various species of birds, animals, and plants.

 Chipko Movement started in the early 1970s in the Garhwal Himalayas of Uttarakhand.