Oceanography and coasts — UPSC Prelims PYQs

Which of the following statements with regard to India's Deep Ocean Mission is/are correct? 1. It was launched by the Ministry of Ports, Shipping and Waterways, Government of India. 2. Matsya-6000 has been designed to carry 3 people for deep sea exploration. 3. Samudrayaan is a project under this mission. Select the answer using the code given below:

With reference to "Coriolis force", which of the following statements is/are correct? 1. It increases with increase in wind velocity. 2. It is maximum at the poles and is absent at the equator. Select the answer using the code given below:

Consider the following statements: 1. The Red Sea receives very little precipitation in any form. 2. No water enters the Red Sea from rivers. Which of the statements given above is/are correct?

Consider the following statements 1. In the tropical zone, the western sections of the oceans are warmer than the eastern sections owing to the influence of trade winds. 2. In the temperate zone, westerlies make the eastern sections of oceans warmer than the western sections. Which of the statements given above is/are correct?

Water can dissolve more substances than any other liquid because

With reference to Ocean Mean Temperature (OMT), which of the following statements is/are correct? 1. OMT is measured up to a depth of 26°C isotherm which is 129 metres in the south-western Indian Ocean during January–March. 2. OMT collected during January–March can be used in assessing whether the amount of rainfall in monsoon will be less or more than a certain long-term mean. Select the correct using the code given below:

Consider the following activities: 1. Spraying pesticides on a crop field 2. Inspecting the craters of active volcanoes 3. Collecting breath samples from spouting whales for DNA analysis. At the present level of technology, which of the above activities can be successfully carried out by using drones?

Which of the following is geographically closest to Great Nicobar?

With reference to ‘Indian Ocean Dipole (IOD)’ sometimes mentioned in the news while forecasting Indian monsoon, which of the following statements is/are correct? 1. The IOD phenomenon is characterised by a difference in sea surface temperature between tropical Western Indian Ocean and tropical Eastern Pacific Ocean. 2. An IOD phenomenon can influence an El Nino’s impact on the monsoon. Select the correct answer using the code given below:

Tides occur in the oceans and seas due to which among the following? 1. Gravitational force of the Sun 2. Gravitational force of the Moon 3. Centrifugal force of the Earth Select the correct answer using the code given below.

What explains the eastward flow of the equatorial counter current?

Which one of the following pairs of islands is separated from each other by the ‘Ten Degree Channel’?

The most important fishing grounds of the world are found in the regions where

Consider the following statements: If there were no phenomenon of capillarity 1. It would be difficult to use a kerosene lamp. 2. One would not be able to use a straw to consume a soft drink. 3. The blotting paper would fail to function. 4. The big trees that we see around would not have grown on the Earth. Which of the statements given above are correct?

Consider the following factors 1. Rotation of the Earth 2. Air pressure and wind 3. Density of ocean water 4. Revolution of the Earth Which of the above factors influence the ocean currents?

India maintained its early cultural contacts and trade links with Southeast Asia across the Bay of Bengal. For this pre-eminence of the early maritime history of the Bay of Bengal, which of the following could be the most convincing Solution/Solutions?