TN Board English Grammar: Top 90 Abbreviations and Acronyms with PTA Exercises

Hey TN Board Class 10, 11, and 12 students! Are you looking to score full marks in your English Vocabulary section without spending hours memorizing? Welcome to your ultimate cheat sheet for Abbreviations and Acronyms. We've compiled the top 90 terms frequently asked in board exams, added smart memory hacks, and included real PTA Board Question Paper exercises to test your knowledge.

What Are Abbreviations and Acronyms?

  • Abbreviation: "Abbreviation" என்பதன் தமிழ் அர்த்தம் "சுருக்கம்" என்பதாகும். இவை நீண்ட வாக்கியங்கள் அல்லது சொற்றொடர்கள் போன்றவற்றை எளிதாகப் பயன்படுத்துவதற்கு உதவுபவைகளாகும். (A shortened form of a word or phrase, like "Dr." for Doctor).
  • Acronym: "Acronyms" என்றால் ஒரு சொற்றொடரின் முதல் எழுத்துக்களை எடுத்து அவற்றை இன்னுமொரு புதியச் சொல் போன்று பேசப்படும் சுருக்கப்பெயர்களாகும். (Formed from the initial letters of other words and pronounced as a new word, like "NASA").

🚀 Top 3 Memory Hacks for Board Exams

  • The "Cover & Test" Method: Scroll down to the table below, cover the "Expansion" column with your hand or a book, and try to guess the full form out loud.
  • Watch Your Spelling: Examiners love to deduct half marks for silly spelling mistakes. Pay special attention to tricky words like Chartered, Corporation, and Organization.
  • Group by Category: Don't memorize 1 to 90 blindly. Notice patterns (e.g., "B" usually stands for Bachelor in degrees, "M" for Master, "I" for Indian or International).
Exam Tip: Always write the full expansion with correct capitalization! For example, write Indian Administrative Service, not indian administrative service.

The Master List: Top 90 Abbreviations & Expansions

S.No. Abbreviation / Acronym Expansion (Memorize the Spelling!)
1P.A.Personal Assistant
2P.S.Personal Secretary / Postscript
3B. Tech.Bachelor of Technology
4B.P.Blood Pressure
5A.I.R.All India Radio
6Dr.Doctor
7G.M.General Manager
8S.B.I.State Bank Of India
9B. Pharm.Bachelor of Pharmacy
10S.S.L.C.Secondary School Leaving Certificate
11B.ComBachelor of Commerce
12M.ComMaster of Commerce
13B.Sc.Bachelor of Science
14M.Sc.Master of Science
15M.S.Master of Surgery
16M.B.B.SBachelor of Medicine and Bachelor of Surgery
17B.E.Bachelor of Engineering
18M.E.Master of Engineering
19B.L.Bachelor of Law
20B.Ed.Bachelor of Education
21M.Ed.Master of Education
22L.P.G.Liquefied Petroleum Gas
23A.U.T.Association of University Teachers
24F.A.O.Food and Agriculture Organization
25F.C.A.Fellow of the Institute of Chartered Accountants
26G8Group of Eight Nations
27C.M.Chief Minister
28P.M.Prime Minister
29F.M.Frequency Modulation
30A.T.M.Automated Teller Machine
31D.E.O.District Educational Officer
32A.E.O.Assistant Educational Officer
33I.A.S.Indian Administrative Service
34I.P.S.Indian Police Service
35M.L.A.Member of Legislative Assembly
36M.P.Member of Parliament
37B.P.O.Business Process Outsourcing
38K.P.O.Knowledge Process Outsourcing
39C.B.I.Central Bureau of Investigation
40K.K.N.P.P.Kudankulam Nuclear Power Plant
41B.B.C.British Broadcasting Corporation
42C.C.T.V.Closed Circuit Television
43R.T.E.Right To Education
44S.A.T.Scholastic Aptitude Test
45C.A.D.Computer Aided Design
46C.D.Compact Disc
47C.P.U.Central Processing Unit
48M.B.A.Master of Business Administration
49M.Phil.Master of Philosophy
50I.F.S.Indian Foreign Service (Or) Indian Forest Service
51N.D.A.National Defence Academy
52L.A.N.Local Area Network
53U.P.S.Uninterrupted Power Supply
54S.M.S.Short Messaging Service
55N.S.S.National Service Scheme
56U.N.O.United Nations Organization
57V.I.P.Very Important Person
58U.G.C.University Grants Commission
59P.I.N.Postal Index Number
60T.N.P.S.C.Tamil Nadu Public Service Commission
61M.C.A.Master of Computer Application
62W.H.O.World Health Organization
63T.O.E.F.L.Test Of English as a Foreign Language
64I.E.L.T.S.International English Language Testing System
65G.A.T.E.Graduate Aptitude Test for Engineering
66C.A.T.Common Aptitude Test
67I.S.R.O.Indian Space Research Organization
68N.A.S.A.National Aeronautics and Space Administration
69AVADIArmed Vehicles and Ammunition Depot of India
70TANSITamil Nadu Small Scale Industries
71PANPermanent Account Number
72AIDSAcquired Immuno Deficiency Syndrome
73RAMRandom Access Memory
74ROMRead Only Memory
75VISCOMVisual Communication
76SAARCSouth Asian Association for Regional Co-operation
77OPECOrganization of Petroleum Exporting Countries
78UNESCOUnited Nations Educational, Scientific and Cultural Organization
79NEWSNorth East West South
80HUDCOHousing and Urban Development Corporation
81POTAPrevention Of Terrorist Activities Act
82ESMAEssential Services Maintenance Act
83SALTStrategic Arms Limitation Talks
84UFOUnidentified Flying Object
85ILOInternational Labour Organization
86TAFETractors And Farm Equipment
87RBIReserve Bank Of India
88SSCStaff Selection Commission
89IOCIndian Oil Corporation
90NGONon-Government Organization

🎯 Test Yourself! (PTA Board Questions)

Ready to see how much you remember? Grab a notebook and try to answer these questions from the PTA model question papers. No peeking at the answers below until you are done!

  1. Choose the correct expansion of the abbreviation SIM. (MDL-19)
    1. Subscriber Information Module
    2. Subscriber Identification Module
    3. Student Identification Module
    4. School Identification Module
  2. Choose the correct expansion of the abbreviation IMF. (PTA-1)
    1. Indian Monetary Fund
    2. International Mutual Fund
    3. International Monetary Fund
    4. Indian Mutual Fund
  3. Choose the correct expansion of the abbreviation MRI. (PTA - 2)
    1. Magnified Resonance Imaging
    2. Magnified Reasoning Imagery
    3. Magnetic Resonance Imaging
    4. Magnetic Resonance Imagery
  4. Choose the correct expansion of the abbreviation IIT. (PTA-3)
    1. International Institute of Teaching
    2. Indian Institute of Teaching
    3. Indian Institute of Technology
    4. International Institute of Technology
  5. The common expansion of CBI is (PTA - 4)
    1. Central Bureau of Investigation
    2. Central Banks of India
    3. Central Bureau of Investigators
    4. Central Bureau of Investors
  6. The common expansion of IIT (PTA - 5)
    1. Indian Institute of Technology
    2. International Institute of Technology
    3. Industrial Institute of Technology
    4. Italian Institute of Technology
  7. The common expansion of GPS is (PTA - 6)
    1. Geometric Position System
    2. Global Positioning System
    3. Global Pointing Structure
    4. Globe Position System
Check Your Score: How many did you get right out of 7? If you scored full marks, you are well-prepared! If not, scroll back up and review the tricky ones again.

Answer Key

  • 1. (b) Subscriber Identification Module
  • 2. (c) International Monetary Fund
  • 3. (c) Magnetic Resonance Imaging
  • 4. (c) Indian Institute of Technology
  • 5. (a) Central Bureau of Investigation
  • 6. (a) Indian Institute of Technology
  • 7. (b) Global Positioning System