Which element is most abundant by mass in the earth's

In the following question select the answer pair that expresses a relationship most similar to that expressed in the capitalised pair.

In the following questions four words are given in each question, out of which only one word is correctly spelt. Find the correctly spelt word.

Deadlock 

Comic 

One who knows everything

Which of the following is an antonym of "jubilant"?

A) Languish           B) Mundane      C) Naive     D) Routine

In the following question, select the choice whose meaning is opposite to the word shown in bold for below question.

Astonish

Select the INCORRECTLY spelt word.

Select the most appropriate ANTONYM of the bold word.

The consultant analysed the proposal carefully before he decided to jettison it.