An or A? Indefinite Article QuizOnline version Test your knowledge of using 'an' and 'a'. by Arnab Biswas 1 Before words starting with a silent h, we use 'a'. Yes No 2 Use 'an' before words that start with a vowel sound, for example 'an apple'. Yes No 3 An unicorn is correct. Yes No 4 Before words that begin with a vowel letter but have a consonant sound, we use 'a' (for example, 'a university'). Yes No 5 We always use 'an' before every word that starts with a vowel letter. Yes No 6 The article 'an' is used before words that begin with consonant sounds, like 'an school'. Yes No 7 An MRI is correct because the initial sound is 'em', a vowel sound. Yes No 8 An honor is correct because the 'h' is silent and the word starts with a vowel sound. Yes No 9 We say 'an history'. Yes No 10 The word 'hour' takes 'an' because its initial sound is a vowel. Yes No