Copper is __________ Useful metal. (appropriate article)

• a
• an
• the
• Zero article
Correct Option: A  [ a ]

Remark: "a" is correct because "useful" starts with a consonant sound. "An" is used before words that start with vowel sounds.

It's _________ most expensive hotel in town.

• a
• the
• one
• None of these
Correct Option: B  [ the ]

Remark:

________ Mount Everest is in the Himalayas

• a
• the
• one
• None of these
Correct Option: B  [ the ]

Remark:

Here are ________ dozen of bananas.

• an
• a
• the
• no article
Correct Option: B  [ a ]

Remark:

Should we look down upon _________ poor?

• the
• an
• a
• No article required
Correct Option: A  [ the ]

Remark:

My mother is allergic to _______ cigarette smoke.

• a
• the
• an
• none of these
Correct Option: D  [ none of these ]

Remark:

One of the teacher is ________ European.

• a
• an
• the
• none
Correct Option: A  [ a ]

Remark:

Did you get married after leaving ________ University?

• an
• the
• a
• No article required
Correct Option: B  [ the ]

Remark:

Lala Lajpat Rai is ________ Lion of Punjab.

• a
• the
• an
• No article required
Correct Option: B  [ the ]

Remark:

It is ________ uniform policy.

• a
• an
• the
• no article
Correct Option: A  [ a ]

Remark: The word "a" is used before a noun that begins with a consonant sound.
"a uniform" (the "u" in "uniform" is pronounced as a consonant sound).