UPSC Combined Defence Services Examination (CDSE) - General Knowledge Mock Test

Overview of UPSC Combined Defence Services Examination (CDS)

The Combined Defence Services Examination (CDSE) is conducted twice a year by the Union Public Service Commission (UPSC) to recruit officers into the Indian Military Academy (IMA), Officers Training Academy (OTA), Indian Naval Academy (INA), and Air Force Academy (AFA).

Among the written testing components, the General Knowledge (GK) paper is mandatory across all academies and is widely regarded as one of the most intellectually demanding sections. It tests not merely factual recall, but also an aspirant's analytical grasp of national affairs, international events, constitutional mechanics, and everyday scientific observations.

Examination Structure & Syllabus

The written paper for CDS General Knowledge consists of objective multiple-choice questions carrying equal weight. Candidates are allotted two hours (120 minutes) to attempt the exam.

Key chapters and topics covered include:

• Indian Polity and Governance: Constitutional framework, Fundamental Rights, Directive Principles of State Policy (DPSP), Parliament, Judiciary, Emergency Provisions, and Statutory Bodies.
• History of India: Ancient trade routes, empires, Delhi Sultanate, Mughal Era, and a profound focus on the Modern Indian National Movement, freedom struggles, and socio-religious reforms.
• Physical and Indian Geography: Geomorphology, climatology, oceanography, Indian drainage systems, agricultural patterns, mineral resources, and map-based locations.
• General Science: Fundamental concepts covering everyday Physics (Optics, Mechanics, Electricity), Chemistry (Acids & Bases, Chemical Reactions, Periodic Table), and Biology (Cell Biology, Human Physiology, Genetics, Diseases).
• Indian Economy: Macroeconomic indicators, Union Budget, monetary and fiscal policies, banking institutions, and flagship governmental welfare schemes.
• Defence, Security & Current Events: Military exercises, modern weapons systems, defence appointments, international summits, multilateral agreements, and awards.
• Environment & Ecology: National parks, wildlife sanctuaries, climate accords, carbon credits, and endangered flora and fauna.

Test Rules and Negative Marking

1. Format: The GK paper is delivered as an offline pen-and-paper OMR test in the official UPSC schedule; computer-based mock tests replicate its objective multiple-choice design.
2. Negative Marking: UPSC enforces a strict penalty of one-third (0.33) of the marks assigned to a question for every incorrect answer.
3. Single Response: Marking multiple answers on a single question is marked as an incorrect attempt and attracts negative marking.
4. Unanswered Questions: Questions left unattempted result in zero marks (neither added nor deducted).
5. Minimum Qualifying Standard: UPSC mandates an individual sectional cut-off (usually around 20% marks) in each individual paper alongside an aggregate cut-off.

Scoring Criteria

• Total Marks: The General Knowledge paper carries 100 maximum marks.
• Weightage Distribution: Since there are typically 120 questions in the real exam, each correct answer yields approximately 0.833 marks, while each incorrect response incurs a deduction of ~0.27 marks.
• In simulated practice tests with a 50-question format, total marks equal 100, where each correct answer awards 2 marks and a wrong response deducts 0.67 marks.
• Candidates aiming for IMA, AFA, or INA must aim for at least 40–50+ marks in this paper to secure a competitive aggregate rank.

Preparation Tips for CDS GK

1. Focus Heavily on NCERTs: Revise NCERT Class 9 and 10 textbooks for Physics, Chemistry, and Biology. Most science questions are lifted directly from basic conceptual applications.
2. Track Yearly Defence Exercises: Maintain notes on bilateral and multilateral military exercises, commissioned naval vessels, new missile trials, and operational commands.
3. Master Polity Articles & Amendments: UPSC frequently asks statement-based questions regarding fundamental rights, constitutional amendments, and parliamentary procedures.
4. Consistent Map Practice: Mark important physical features like straits, choke points, mountain passes, and rivers on physical maps.
5. Take Regular Timed Mock Tests: Regular practice under timed constraints mitigates negative marking tendencies and builds accuracy.