My mother is allergic to _______ cigarette smoke.

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

Remark:

My mother bought me ______ new Pair of shoes.

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

Remark: "A" is the indefinite article used before singular countable nouns that start with a consonant sound.

She did _______ MA in French literature.

• an
• a
• one
• None of these
Correct Option: A  [ an ]

Remark:

Switzerland is ________ European country

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

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).

Iron is _______ useful metal.

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

Remark:

At last _______ justice has been done to the accused.

• the
• an
• a
• no article is needed
Correct Option: D  [ no article is needed ]

Remark:

He is _______ honourable man.

• a
• an
• the
• zero article
Correct Option: B  [ an ]

Remark: "honourable" starts with sound of "vowel"

The Ganga is considered holy by _______ Indians.

• a
• an
• the
• zero article
Correct Option: C  [ the ]

Remark:

Should we look down upon _________ poor?

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

Remark: