Correct the given sentence gramatically.

Shreya, who she is my best friend, is a singer.

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Give somebody a ring

In the following question, out of the four alternatives, select the word opposite in meaning to the word given.

Vigilance

In the following question, out of the four alternatives, select the word opposite in meaning to the word given.

Cavalier

In the following question, out of the four alternatives, select the word similar in meaning to the word given.

Fustian

In the following question, out of the four alternatives, select the word similar in meaning to the word given.

Cajole

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

The airline was unable to give us a reason for the ______________ departure delay.

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

The big stone monument was the only __________ the lost traveller remembered.

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

While an electron (1)/ carries a negative electrical (2) charge, a neutron is neutral. (3)/No Error (4)