A vs An Quiz (Sound Rule) | Intermediate Level | 20 Questions & Answers with Explanations

 Unlike "honest" and "hour," the H in "historic" is pronounced, so the word begins with a consonant sound, making a correct, not an, even though some older or British usage occasionally uses "an historic" informally.

Correct sentence: "It was a historic moment for the entire nation."

Memory hook: "historic" has a pronounced H (unlike "honest" and "hour") — don't over-apply the silent-H exception to every H-word; check each one individually.

"One-year" begins with the consonant "wu" sound, consistent with "one-rupee" and "one-sided," so a is correct.

Correct sentence: "He recently completed a one-year certification course in digital marketing."

Memory hook: any compound word beginning with "one-" reliably takes a, regardless of what follows the hyphen.

"MLA" is an abbreviation, and its first letter "M" is pronounced "em," a vowel sound, so an is correct.

Correct sentence: "He has served as an MLA for two consecutive terms."

Memory hook: "M" as a spoken letter always starts with a vowel sound ("em") — treat any abbreviation beginning with M the same way.

 "FIR" begins with the letter F, pronounced "ef," a vowel sound when spoken aloud as a letter, so an is correct.

Correct sentence: "The police have registered an FIR against the accused."

Memory hook: "F" sounds like "eff" when spoken alone — a vowel sound — even though F is normally a consonant when part of a full word.

"IAS" begins with the letter I, pronounced "eye," a vowel sound, so an is correct.

Correct sentence: "She recently cleared the exam and is now an IAS officer."

Memory hook: "I" as a spoken letter is already a vowel sound in the most obvious way — no trick needed here, just confirm the pattern holds for abbreviations too.

 "LLB" begins with the letter L, pronounced "el," a consonant sound, so a is correct, not an — this contrasts with M, F, and I, which are vowel sounds when spoken as letters.

Correct sentence: "He is pursuing a LLB degree after completing his graduation."

Memory hook: not every abbreviation takes an — "el" (L) is a consonant sound, so check each letter individually rather than assuming all abbreviations take an.

"RTI" begins with the letter R, pronounced "ar," a vowel sound when spoken as a letter, so an is correct.

Correct sentence: "The committee filed an RTI application to obtain the records."

Memory hook: "R" sounds like "ar" — a vowel sound — add it to your growing list of vowel-sounding letters (A, E, F, H, I, L-no, M, N, O, R, S, X).

"HR" begins with the letter H, but as a spoken abbreviation letter, "H" is pronounced "aitch," a vowel sound, so an is correct — this is distinct from the word "honest," where the H itself is silent, but the outcome (a vowel sound) is the same.

Correct sentence: "He works as an HR manager at a multinational company."

Memory hook: "H" as a spoken letter is "aitch," which starts with a vowel sound — this is a different reason than "honest" (silent H), but it leads to the same an answer.

"Unique" begins with the consonant "yu" sound, just like "university" and "uniform," so a is correct, not an, despite starting with the vowel letter U.

Correct sentence: "The professor has written a unique perspective on the economic crisis."

Memory hook: extend your "yu"-sound list beyond university/uniform/European to include "unique," "union," and "usual" — all follow the same pattern.

Like "honest" and "hour," the H in "honorable" is silent, so the word begins with the vowel sound "on," making an correct.

Correct sentence: "She is an honorable member of this council."

Memory hook: "honorable" and "honest" share the same silent-H root pattern — both take an, unlike "historic" and "horrible," which have pronounced H's.

Like "one-rupee coin," "one-sided" begins with the consonant "wu" sound, not a vowel, so a is correct.

Correct sentence: "He gave a one-sided account of what happened that night."

Memory hook: any word starting with "one-" (one-sided, one-way, one-time) follows the same "wu" sound pattern and takes a.

"MSc," when read as an abbreviation, begins with the letter M, pronounced "em," a vowel sound, so an is correct.

Correct sentence: "She received an MSc degree in Physics from Delhi University."

Memory hook: whether it's MBA, MLA, or MSc, any abbreviation starting with the letter M consistently takes an, since "em" is always a vowel sound.

"Useful" begins with the consonant "yu" sound, just like "unique" and "university," so a is correct, not an.

Correct sentence: "He is known to be a useful resource for new employees."

Memory hook: any word starting with "use-" or "usu-" (useful, user, usual) follows the same "yu" sound pattern as university and unique.

When "U" is read aloud as a single letter, it's pronounced "yoo," the same consonant "y" sound found in "university" and "uniform," so a is correct, not an.

Correct sentence: "The bank requires a UID number for account verification."

Memory hook: not all abbreviations automatically take an — check the actual spoken sound of the first letter; "U" said alone still carries the "yu" consonant sound.

Like "UID," the abbreviation "UN" begins with the letter U, spoken as "yoo," a consonant "y" sound, so a is correct, not an.

Correct sentence: "He has been selected as a UN representative for the regional summit."

Memory hook: "U" is one of the few letters that breaks the "abbreviations are usually vowel sounds" pattern — always double-check U-starting abbreviations specifically.

This reinforces "RTI," where the spoken letter "R" ("ar") is a vowel sound, confirming an is correct, tested here in a slightly different sentence structure than the earlier RTI question.

Correct sentence: "She filed an RTI query but received no response within the stipulated time."

Memory hook: don't let a different sentence structure (query vs application) distract you — the abbreviation itself and its first-letter sound haven't changed.

This reinforces the silent-H rule for "hour," even when followed by additional detail ("and a half"), confirming an remains correct.

Correct sentence: "It took nearly an hour and a half to complete the entire paper."

Memory hook: added detail after the noun ("and a half," "or so") doesn't change the underlying sound rule — "hour" still starts with a silent H.

Like "honest" and "honorable," "honorary" has a silent H, so it begins with a vowel sound, making an correct.

Correct sentence: "She was awarded an honorary doctorate by the university for her research."

Memory hook: "honorary," "honorable," "honest," and "hour" are the classic silent-H family — memorise them as a group since they're the most frequently tested exceptions.

Consistent with "one-rupee," "one-sided," and "one-year," "one-page" begins with the consonant "wu" sound, so a is correct.

Correct sentence: "The manager asked for a one-page summary of the entire proposal."

Memory hook: by now, treat any "one-[noun]" compound as an automatic a — the "wu" sound pattern never changes regardless of what follows

"MPhil," when read as an abbreviation, begins with the letter M, pronounced "em," a vowel sound, so an is correct, following the same pattern as MBA, MLA, and MSc.

Correct sentence: "He is currently pursuing an MPhil degree alongside his teaching job."

Memory hook: any abbreviation starting with M (MBA, MLA, MSc, MPhil) consistently takes an — this is one of the most reliable single-letter patterns in the whole topic.