General Awareness for SSC Delhi Police Constable 2025
This section emphasizes knowledge of India-centric topics, including its history, geography, polity, and current events. Below are key notes and examples for each topic. For current affairs, I've focused on recent developments as of September 23, 2025, based on reliable sources.
Current Affairs and Everyday Observations
Current affairs cover recent national and international events, government schemes, awards, and socio-economic issues. Stay updated via newspapers, apps, or official sites like PIB.
Key Recent Events (September 2025 Highlights):
- UPSC and Exam-Related Updates: Insights IAS and Vajiram & Ravi reported on daily current affairs, including topics like Mana Mitra (a potential new initiative or scheme) and pollution-related issues such as the single-use plastic ban's enforcement challenges.
- Health and Social Issues: PMF IAS highlighted India's growing obesity epidemic from a UNICEF report, noting rising concerns in urban areas. AffairsCloud covered banking, insurance, and SSC-related news, including new schemes or appointments.
- Defense and International Relations: Guidely reported the conclusion of the maiden bilateral maritime exercise between the Indian Navy and the Hellenic Navy on September 18, 2025, in the Mediterranean Sea.
- Political and Administrative News: GKToday noted the Election Commission's delisting of 474 unrecognized political parties, commissioning of Adamya-Class Fast Patrol Vessel by the Indian Coast Guard, and Dhordo Village (Gujarat) becoming fully solar-powered. Testbook mentioned India's first-ever early vice-presidential election on September 9, 2025, following VP Jagdeep Dhankhar's resignation.
- Weekly Pointers: Indian Express summarized UPSC-relevant events from September 15-21, 2025, including environmental and economic updates.
Sample Question: Which village in India became fully solar-powered in September 2025? Answer: Dhordo Village (Gujarat). Explanation: This highlights India's push towards renewable energy, aligning with schemes like PM Surya Ghar.
Sports
Focus on major events, Indian athletes, and international tournaments.
- Key Topics: Olympics, Cricket World Cup, Asian Games, national sports awards (e.g., Arjuna Award).
- Recent: India's performance in Paris Olympics 2024 (6 medals); upcoming events like IPL 2026 auctions.
- Sample Question: Who won the ICC Men's T20 World Cup in 2024? Answer: India (defeated South Africa in the final).
History
Covers ancient, medieval, and modern India, freedom struggle, and key figures.
- Key Topics: Indus Valley Civilization, Mughal Empire, Indian Independence Movement (Gandhi, Nehru, Bose).
- Sample Question: Who was the first Governor-General of independent India? Answer: Lord Mountbatten (followed by C. Rajagopalachari as the first Indian).
Culture
Includes arts, festivals, architecture, and heritage sites.
- Key Topics: Classical dances (Bharatanatyam, Kathak), UNESCO sites (Taj Mahal, Red Fort), festivals (Diwali, Eid).
- Sample Question: Which Indian dance form originates from Kerala? Answer: Kathakali.
Geography
Focus on physical features, climate, resources, and world geography.
- Key Topics: Rivers (Ganga, Brahmaputra), mountains (Himalayas), monsoons, neighboring countries.
- Sample Question: Which is the longest river in India? Answer: Ganga (2,525 km).
Indian Economy
Covers basics of GDP, sectors, budgets, and reforms.
- Key Topics: Five-Year Plans, GST, RBI functions, inflation.
- Sample Question: What is the full form of GDP? Answer: Gross Domestic Product.
General Polity
Includes structure of government, rights, and institutions.
- Key Topics: Preamble, Fundamental Rights, Parliament, Judiciary.
- Sample Question: How many Fundamental Rights are there in the Indian Constitution? Answer: Six (originally seven, but Right to Property was removed).
Indian Constitution
Detailed study of articles, amendments, and features.
- Key Topics: Borrowed features (e.g., from UK, USA), Directive Principles, Emergency Provisions.
- Sample Question: Which article deals with the Right to Equality? Answer: Articles 14-18.
Scientific Research
Focus on ISRO, DRDO, recent inventions, and Nobel winners.
- Key Topics: Chandrayaan missions, COVID vaccines (Covaxin), atomic energy.
- Sample Question: What is the name of India's first indigenous COVID-19 vaccine? Answer: Covaxin (developed by Bharat Biotech).
Quantitative Aptitude (Numerical Ability) for SSC Delhi Police Constable 2025
This section tests basic math up to Class 10 level. Focus on speed and accuracy. Below are key topics with formulas, examples, and solved questions.
Number Systems
Deals with integers, rationals, irrationals.
- Key Concepts: LCM, HCF, divisibility rules.
- Sample Question: Find the HCF of 12 and 18. Solution: Factors of 12: 1, 2, 3, 4, 6, 12. Factors of 18: 1, 2, 3, 6, 9, 18. HCF = 6. Explanation: HCF is the highest common factor. Use Euclidean algorithm: HCF(a, b) = HCF(b, a mod b) until remainder is 0.
Computation of Whole Numbers
Basic operations on integers.
- Sample Question: Compute 456 + 789 - 234. Solution: 456 + 789 = 1245; 1245 - 234 = 1011. Explanation: Follow BODMAS (Brackets, Orders, Division, Multiplication, Addition, Subtraction).
Decimals and Fractions
Conversions, operations.
- Sample Question: Convert 3/4 to decimal and add 0.25. Solution: 3/4 = 0.75; 0.75 + 0.25 = 1.00. Explanation: Divide numerator by denominator for decimal; align decimals for addition.
Relationship Between Numbers
Patterns, sequences.
- Sample Question: Find the missing number: 2, 4, 8, ? Solution: 16 (each is doubled). Explanation: Identify arithmetic/geometric progressions.
Fundamental Arithmetical Operations
+, -, ×, ÷.
- Sample Question: 25 × 4 ÷ 5 - 3. Solution: 25 × 4 = 100; 100 ÷ 5 = 20; 20 - 3 = 17. Explanation: Follow BODMAS.
Percentages
Formula: (Part/Whole) × 100.
- Sample Question: 20% of 500 is? Solution: (20/100) × 500 = 100. Explanation: Percentage means per hundred.
Ratio and Proportion
A:B = C:D.
- Sample Question: Divide 100 in ratio 2:3. Solution: Parts = 2+3=5; 2/5 × 100 = 40; 3/5 × 100 = 60. Explanation: Total parts divide the whole.
Averages
Sum/Number of items.
- Sample Question: Average of 10, 20, 30. Solution: (10+20+30)/3 = 60/3 = 20. Explanation: Mean value.
Interest (Simple and Compound)
Simple: P × R × T / 100. Compound: P(1 + R/100)^T - P.
- Sample Question: Simple interest on ₹1000 at 5% for 2 years. Solution: 1000 × 5 × 2 / 100 = ₹100. Explanation: Interest = Principal × Rate × Time / 100.
Profit and Loss
Profit = SP - CP; % = (Profit/CP) × 100.
- Sample Question: CP ₹200, SP ₹250. Profit %? Solution: Profit = 50; (50/200) × 100 = 25%. Explanation: Compare to cost price.
Discount
Effective price after reduction.
- Sample Question: ₹100 item at 10% discount. Solution: Discount = 10; Pay ₹90. Explanation: Subtract percentage of original.
Mensuration
Area, volume formulas (e.g., rectangle area = l × b).
- Sample Question: Area of circle with radius 7 (π=22/7). Solution: πr² = (22/7) × 49 = 154. Explanation: Use formula; approximate π if needed.
Time and Distance
Speed = Distance/Time.
- Sample Question: 100 km at 50 km/h. Time? Solution: 100/50 = 2 hours. Explanation: Rearrange formula.
Ratio and Time
Similar to ratio, applied to time.
- Sample Question: A:B time ratio 3:4 for same work. If A takes 12 days, B? Solution: Efficiency inverse; B = (4/3) × 12 = 16 days. Explanation: Time inversely proportional to efficiency.
Time and Work
Work rate = 1/Work days.
- Sample Question: A does job in 10 days, B in 15. Together? Solution: Rates: 1/10 + 1/15 = (3+2)/30 = 5/30 = 1/6 days. Explanation: Add rates for combined work; reciprocal for days.
