General Awareness
VIBGYOR for Atmospheric Layers — Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere = Tiger Snake Meets Terrible Elephant (ascending order by altitude).
BRICS Nations — Brazil, Russia, India, China, South Africa — remember "BRICS build economic blocks."
Quit India 1942 Date — 8/8/1942 = 8+8=16, 1+9+4+2=16; both sum to 16, making August 8, 1942 memorable.
Fundamental Rights Articles — Articles 14-18 (Equality), 19-22 (Freedom), 23-24 (Exploitation), 25-28 (Religion), 29-30 (Culture/Education), 32 (Remedies) = Every Free Elephant Respects Culture Rightfully.
Five-Year Plan Fathers — PC Mahalanobis designed India's Second Five-Year Plan (1956-61); remember "Mahalanobis = Maha industrialization."
Jammu & Kashmir UT Specific
J&K UT Formation Date — October 31, 2019 (Reorganisation Act effective); remember Sardar Patel's birth anniversary = J&K reorganization day.
Three Provinces of J&K — Jammu, Kashmir, Ladakh (pre-2019) = JKL alphabetically consecutive letters.
Major Languages — Kashmiri, Dogri, Urdu, Hindi = K-D-U-H sounds like "Kudh" (self); J&K's self-identity languages.
Hangul Deer Habitat — Dachigam National Park; remember "Dachigam = Deer Achi (good) habitat."
English Language
Articles A/An Rule — Use An before vowel *sounds* (an MBA, an hour), A before consonant sounds (a university, a one-rupee coin); sound matters, not spelling.
Subject-Verb Agreement Trap — "Each/Every/Either/Neither" always takes singular verb: "Each student has" not "have"; remember E-words = Singular.
Homonym Trick: Affect/Effect — Affect = Action (verb), Effect = End result (noun); "The drought affected crops, causing bad effects."
Comma Before 'And' Rule — Use comma before 'and' in lists of 3+ items: "rice, wheat, and maize" (Oxford comma prevents confusion).
Indirect Speech Time Shift — Today→That day, Tomorrow→Next day, Yesterday→Previous day, Now→Then, Ago→Before; remember T-N-P-T-B sequence.
Reasoning and Numeracy
Divisibility by 11 — Subtract sum of alternate digits: 12,345 → (1+3+5)−(2+4)=3; not divisible. If result is 0 or multiple of 11, original number is divisible.
Calendar Odd Days — Ordinary year=1 odd day, Leap=2. Century non-leap unless divisible by 400. Count odd days mod 7 to find day-of-week.
Blood Relations Gender-Neutral — Son/Daughter of brother = Nephew/Niece; remember "Neph-New" has 'N' like soN.
Clock Angle Formula — At H hours M minutes: |30H − 6M + M/2|°. At 3:15, angle = |90−90+7.5|=7.5°.
Profit/Loss on SP — If cost increased by X%, selling price increases by X% for same profit%; remember base matters: CP base for profit%, SP base for discount%.
Compound Interest Shortcut — For 2 years at R%: CI−SI = (SI × R)/100. If SI=₹600, R=10%, extra CI=₹60.
Average Removal Trick — If one value removed, new average changes: Change = (Removed value − Old average)/(Remaining count). Quickly find removed number.
Direction Sense: NESW Circle — Clockwise: Never Eat Sour Watermelon. Right turn = 90° clockwise, Left = 90° anticlockwise.
Computer Knowledge
OSI Model Layers — Physical, Data Link, Network, Transport, Session, Presentation, Application = Please Do Not Throw Sausage Pizza Away (bottom-up).
MS Excel Shortcuts — Ctrl+Home = Cell A1, Ctrl+End = Last used cell, Ctrl+Arrow = Jump to edge; remember Home=Head, End=Edge.
RAM vs ROM — RAM = Readily Altered Memory (volatile), ROM = Read-Only Memory (permanent); RAM needs power, ROM doesn't.
IP Address Classes — Class A: 1-126, B: 128-191, C: 192-223; remember Always Before Christmas (ascending order), 127 reserved for loopback.
Firewall Function — Filters Incoming Requests Eliminating threats; blocks unauthorized access, allows legitimate traffic through defined rules.