History, Ancient and Medieval History
Mauryan Chronology: "CAB" — Chandragupta (322 BCE), Ashoka (268 BCE), Bindusara (between them). Remember CAB for order: Chandragupta founded, Bindusara expanded, Ashoka peak.
Delhi Sultanate Dynasties: "SKTSL" — Slave (1206), Khilji (1290), Tughlaq (1320), Sayyid (1414), Lodi (1451). "Sakte Hain" for sequence memory.
Vijayanagara Rulers: "SSRT" — Sangama, Saluva, Tuluva, Aravidu dynasties in chronological order. Four S-T-based dynasties.
Mughal Succession: "BAHAJS" — Babur, Akbar, Humayun, Akbar, Jahangir, Shah Jahan, Aurangzeb. Wait—correct: "BAHJAS-A" (Babur-Humayun-Akbar-Jahangir-Shah Jahan-Aurangzeb).
Modern History and Freedom Struggle
1857 Revolt Centers: "DKLMB" — Delhi, Kanpur, Lucknow, Meerut, Bareilly. Five major uprising locations in North India.
Gandhi's Movements Timeline: "CNC-SQ" — Champaran (1917), Non-Cooperation (1920), Civil Disobedience (1930), Salt March (within CD), Quit India (1942). Chronological anchor points.
Moderate-Extremist Split Year: "19-07" — 1907 Surat Session split Congress into Moderates and Extremists. Remember as "19-zero-7."
Indian Constitution
Fundamental Rights Articles: "14 to 32" — All six FR categories fall between Articles 14-32. Article 32 itself is the "Right to Constitutional Remedies"—Dr. Ambedkar's "heart and soul."
DPSP Range: "36 to 51" — Directive Principles span Articles 36-51. Remember: DPs come after Rights (higher numbers).
Constitutional Amendment Majorities — Special majority = 2/3 present + 50% total strength. For federal provisions, add ratification by 1/2 states. Two-step process for structure changes.
Quantitative Aptitude and Numerical Skills
Divisibility by 11: Alternating Sum — Subtract alternate digits (1st-2nd+3rd-4th...). If result is 0 or divisible by 11, original number is divisible by 11. E.g., 121: 1-2+1=0 ✓
Percentage-Fraction Quick Conversions — 12.5%=1/8, 16.67%=1/6, 33.33%=1/3, 37.5%=3/8, 62.5%=5/8, 87.5%=7/8. Memorize these eight for speed calculations.
Simple Interest Formula Trap — SI = PRT/100. Many confuse with CI. Remember: SI is LINEAR (straight graph), CI is CURVED (exponential). SI never compounds.
Speed-Distance-Time Triangle — Draw triangle: D on top, S and T at bottom. Cover what you need: D=S×T, S=D/T, T=D/S. Palm trick for quick recall.
Profit % Formula: "Profit on CP" — Profit% = (Profit/CP)×100, NEVER on SP. Loss% same base. MP-discount calculations work backward from marked price.
Compound Interest Shortcut: 2 years — CI for 2 years = SI for 2 years + (SI for 1 year)²/100. Saves time versus full CI formula.
Mensuration: Circle Formulas — Circumference = 2πr = πd. Area = πr². Remember: "Two-pies are round" for 2πr, "pie are squared" for πr².
Mental Ability and Logical Reasoning
Direction Turns: Clockwise "NEWS" — North→East→South→West clockwise. Anti-clockwise reverse: "WSEN." Right turn = clockwise step, left = anti-clockwise.
Coding: Alphabet Position Values — A=1, Z=26. For reverse: A=26, Z=1. Or use A=1, B=2... till M=13, then N=14... Z=26. Quick mental math.
Syllogism: "Some + Some = No Conclusion" — When both premises are particular ("Some A is B," "Some B is C"), no definite conclusion possible. Universal statements needed.
Blood Relations: Gender Neutral Terms — Sibling (brother/sister), parent (mother/father), spouse, child. Solve by drawing family tree with gender symbols quickly.
Series: Difference of Differences — If first-level differences don't show pattern, check second-level differences. Often +2, +4, +6 or ×2 patterns emerge.
English Language Skills
Subject-Verb Agreement: "Each/Every/Either/Neither = Singular" — These indefinite pronouns always take singular verbs. "Each of the boys *is* here" (not 'are').
Preposition Time Rule: "In-On-At" — IN for months/years/centuries (in May, in 2024), ON for dates/days (on Monday, on 15th), AT for exact time (at 5 PM).
Commonly Confused: "Affect vs Effect" — RAVEN: Remember Affect Verb, Effect Noun. Affect = influence (verb), Effect = result (noun). Exception: effect as verb = bring about.
One-Word Substitution Pattern — -cide = killer (homicide, suicide), -logy = study (biology), -phobia = fear (hydrophobia), -archy = rule (monarchy). Root recognition speeds recall.
Digital Literacy and Awareness
Internet Protocols: "HTTP-FTP-SMTP-POP" — HTTP (web pages), FTP (file transfer), SMTP (send mail), POP/IMAP (receive mail). Four core internet protocols for exam.
MS Excel Formula Starts: "=" — ALL formulas begin with equals sign. =SUM(A1:A10), =AVERAGE(B1:B5). Common error is forgetting the "=" prefix.
Keyboard Shortcuts: "CSP" — Ctrl+C (Copy), Ctrl+S (Save), Ctrl+P (Print). Add Ctrl+V (Paste), Ctrl+Z (Undo) for top five universal shortcuts across applications.
Email CC vs BCC — CC = Carbon Copy (visible to all). BCC = Blind Carbon Copy (hidden from others). Remember: "Blind" means hidden recipients.
Punjab State Specific
Punjab Rivers: "5 Dariya = Punjab" — Jhelum, Chenab, Ravi, Beas, Sutlej = five rivers. "Punj" (five) + "ab" (water). Only Ravi, Beas, Sutlej currently flow through Indian Punjab.
Sikh Gurus Chronology: "NAGA HARI" — Nanak, Angad, Amar Das, Ram Das, Arjan, Hargobind, Har Rai, Har Krishan, Tegh Bahadur, Gobind Singh (10 Gurus, 1469-1708).
Punjab Battles: "1739-1849" — Nadir Shah invasion (1739), Anglo-Sikh Wars (1845-46, 1848-49), British annexation (1849). Key dates for Punjab history questions.
Golden Temple Amritsar: 1604 — Foundation laid by Guru Arjan Dev, completed 1604. Harmandir Sahib original name. Remember 16-zero-4 for year anchor.