PRELIMS 2021 KEYS RAJA sir cracking IAS Academy

Latest News

Preliminary Exam CSAT December 09

1. Because of its accuracy in outlining the Earth's subsurface, the seismic­reflection method remains the most important tool in the search for petroleum reserves. In field practice, a subsurface is mapped by arranging a series of wave-train sources, such as small dynamite explosions, in a grid pattern. As each source is activated, it generates a wave train that moves downward at a speed determined uniquely by the rock's elastic characteristics. As rock interfaces are crossed, the elastic characteristics encountered generally change abruptly, which causes part of the energy to be reflected back to the surface, where it is recorded by se1sm1c instruments. The se1sm1c records must be processed to correct for positional differences between the source and the receiver, for unrelated wave trains, and for multiple reflections from the rock interfaces. Then the data acquired at each of the specific source locations are combined to generate a physical profile of the subsurface, which can eventually be used to select targets for drilling.

Which of the following best describes the organization of the passage?

General Studies

Political Science and International Relations

Sociology

Some Reference Essays

List of previous year essay topics (1997-2019)

IAS GOOGLE is googled by the team of Raja Sir’s Cracking IAS Academy. Sources include The Hindu, Indian Express, pib.nic.in, Down To Earth, Economic Times, Vigyan Prasar, AIR and the like. IAS GOOGLE has been prepared in pace with emerging UPSC Trends.

LATEST NEWS

02 Dec
Why do large cities tend to attract more migrants than smaller towns? Discuss in the light of conditions in developing countries. (Answer in 150 words)) (UPSC IAS Mains 2024 General Studies Paper – 1)
02 Dec
What are the ‘basic and irreducible’ functions of the family as proposed by Talcott Parsons? Explain.. (UPSC CSE Mains 2024 - Sociology, Paper 1).
02 Dec
Write approximately 150 words on "Linkage between Power and Hegemony (10m)". (UPSC CSE Mains 2024- Political Science and International Relations, Paper 1)
01 Dec
Climate finance, carbon markets and more: key takeaways from COP29

CATEGORIES

NEWSLETTER

Copyright © 2021 IAS Google. All Rights Reserved