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

A. Kota — Chambal
 Correct. Kota city is situated on the banks of the Chambal River in Rajasthan.

B. Bhubaneshwar — Mahanadi
 Incorrect. Bhubaneshwar is not situated directly on the Mahanadi River. Bhubaneshwar, the capital of Odisha, is located near the Kuakhai River, which is a distributary of the Mahanadi, but not directly on the main Mahanadi channel itself. The major city directly on the Mahanadi is Cuttack.

C. Jabalpur — Narmada
Correct. Jabalpur is located on the banks of the Narmada River in Madhya Pradesh.

D. Surat — Tapti
 Correct. Surat lies on the banks of the Tapti River in Gujarat.

 Therefore, the pair that is NOT correctly matched is option B: Bhubaneshwar — Mahanadi.

The correct answer is:

B. Karnataka, Kerala, Tamil Nadu

• The Cauvery River originates at Talakaveri in the Western Ghats of Karnataka.

• It then flows through Tamil Nadu, where it forms a large delta before emptying into the Bay of Bengal.

• Some of its tributaries, like the Kabini, rise partly in Kerala, so the river basin also extends into Kerala.

 Therefore, the correct set of states through which the Cauvery river or its basin extends is Karnataka, Kerala, and Tamil Nadu.

The correct answer is:

C. 24 time zones

• The Earth takes 24 hours to complete one rotation of 360 degrees.

• Hence, the world is divided into 24 standard time zones, each covering roughly 15 degrees of longitude (since 360° ÷ 24 = 15° per hour).

• Each time zone represents one hour difference from its neighboring zones.

 That is why we generally say there are 24 time zones around the world.