Question

Iron is _ useful metal. ( a/an/the) ​

Answer 1

iron is _ useful metal. ( a/an/the)

• Iron is an useful metal.

Here we are using an because iron is singular and the first letter of useful is a vowel i.e. u. And we know that, An is used before and after singular nouns and before words starting with vowel letters.

Answer 2

Explanation:

Iron is an useful metal..

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