UPSC Civil Service Prelims Paper I 2021 (General Studies)

MCQ (Single Correct Answer)

-0.66

In case of which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrient to enter the cycle?

Carbon cycle

Nitrogen cycle

Phosphorus cycle

Sulphur cycle

UPSC Civil Service Prelims Paper I 2021 (General Studies)

MCQ (Single Correct Answer)

-0.66

Which one of the following is a filter feeder?

Catfish

Octopus

Oyster

Pelican

UPSC Civil Service Prelims Paper I 2021 (General Studies)

MCQ (Single Correct Answer)

-0.66

Consider the following kinds of organisms:

1. Copepods

2. Cyanobacteria

3. Diatoms

4. Foraminifera

Which of the above are primary producers in the food chains of oceans?

1 and 2

2 and 3

3 and 4

1 and 4

UPSC Civil Service Subjects

History of India

Ancient History Medieval History Modern History Indian National Movement Art & Culture

Science and Technology

Basic Biology Chemistry Physics Biotechnology Nanotechnology Space Disease Electronics and Communication Defence Miscellaneous

Geography

Physical Geography World Political Geography Geography Of India

Ecology and Environment

Ecology Biodiversity Government Legislature Government Initiatives International Convention Miscellaneous

Indian Polity and Governance

Evolution of the Constitution Salient Features of Indian Constitution Union and Its Territory Fundamental Rights Directive Principles of State Policy (DPSP) Fundamental Duties System of Governance Union Executive Union Legislature State Legislature and Executive Local Government Union Territories and Special Areas The Judiciary Constitutional and Non-Constitutional Bodies

Economy

Basic Concepts Planning Monetary Policy Fiscal Policy Public Finance in India External Sector Inflation Market Poverty and Unemployment International Institutions Industry Agriculture Miscellaneous

Current Affairs

International Relations Government Programs and Schemes Miscellaneous

Comprehension

Verbal Ability

Basic Numeracy

Number System Fractions HCF & LCM Sequence And Series Elementary Algebra Sets, Relations and Functions Basic Arithmetic Permutations and Combinations Probability Clocks, Calendars and Directions Plane Geometry Mensuration Statistics

Logical Reasoning and General Mental Ability

Coding and Decoding Blood Relations Direction and Distance Ordering and Ranking Non Verbal Reasoning Seating Arrangement Puzzle Logical Venn-Diagram or Syllogism Arrangement and Pattern Missing Number Classification Series

Data Interpretation and Sufficiency

Numerical Ability Pie Chart Data Sufficiency