People, Development and Environment MCQ - People, Development and Environment Section 1

Atmospheric pressure is caused by the gravitational pull of the Earth on the air molecules in the atmosphere. Gravity pulls the air toward the surface, and the weight of this air exerts pressure on everything below it, including the ground and oceans.

• Option A: rotation of earth
  Incorrect. Earth's rotation affects wind patterns and Coriolis effect but not the cause of atmospheric pressure.

• Option B: revolution of earth
  Incorrect. The Earth's revolution around the Sun does not affect atmospheric pressure directly.

• Option C: gravitational pull
  Correct. Gravity holds the atmosphere around the Earth and causes the air to exert pressure on the surface.

• Option D: uneven heating of the earth
  Incorrect. Uneven heating causes wind and pressure variations, but not atmospheric pressure itself.

The southernmost point of the Indian territory is Indira Point, located in the Nicobar Islands. It lies in the Great Nicobar Island and is the southern tip of India's landmass, including islands. It is situated further south than mainland locations like Cape Comorin.

• Option A: Cape Comorin
  Incorrect. Cape Comorin, also known as Kanyakumari, is the southern tip of the Indian mainland, not the entire country.

• Option B: Point Calimere
  Incorrect. Located in Tamil Nadu, but much farther north compared to other options.

• Option C: Indira Point in Nicobar Islands
  Correct. This is the southernmost point of the Indian Union, located on Great Nicobar Island.

• Option D: Kovalam in Trivandrum
  Incorrect. A coastal town in Kerala, well north of the southernmost point.

The rock material carried and deposited by a glacier is called moraines. These are accumulations of soil and rock that are transported by glaciers and left behind as the glacier retreats. Moraines can form ridges along the glacier's path or at its terminus.

• Option A: alluvium
  Incorrect. Alluvium refers to sediments deposited by rivers, not glaciers.

• Option B: meanders
  Incorrect. Meanders are bends or curves in a river channel, unrelated to glacial activity.

• Option C: nodules
  Incorrect. Nodules are small, rounded mineral deposits found in soil or on the ocean floor, not glacier-related.

• Option D: moraines
  Correct. Moraines are the debris carried and deposited by glaciers.

Krishna Raja Sagar (KRS) Dam is built across the Kaveri River in the Mandya district of Karnataka. It is a major source of irrigation and drinking water and is also famous for the Brindavan Gardens located nearby.

• Option A: Kaveri
  Correct. The KRS Dam is constructed on the Kaveri River.

• Option B: Tungabhadra
  Incorrect. The Tungabhadra Dam is built on the Tungabhadra River, not Kaveri.

• Option C: Krishna
  Incorrect. Dams like Nagarjuna Sagar and Almatti are built on the Krishna River.

• Option D: Godavari
  Incorrect. The Godavari River has other major dams, like the Jayakwadi and Polavaram, not the KRS Dam.