Question

Choose the word opposite in meaning of the italicized word-
Many reactions take place in the blast furnace simultaneously.
a) Invariably
b) Contemporarily
c) In unison
d) Momentarily

Answer 1

Hint: The dictionary meaning of the word ‘simultaneously' is ‘at the same time'. For example; You can look good and do no makeup simultaneously.

Complete answer:
The given word ‘simultaneously’ is an adverb. It means to happen or to occur or being done at exactly the same time. For example Two children answered the teacher's question simultaneously. In the given question, we have to find out the opposite of this word-
Now, let us examine all the given options to find out the correct answer :
Option ‘a’ is Invariably. It is an adverb which means in every case or on every occasion. For example Ranch meals are invariably big and hearty.
Option ‘b’ is Contemporarily. It is an adjective which means belonging to the same period of time as another.
Option ‘c’ is In unison. It is a noun that means simultaneous performance or utterance of action or speech. For example : “Yes, sir” said the girls in unison.
Option ‘d’ is Momentarily. It is an adverb which means for a very short time. For example: ...he paused momentarily.
As we have analyzed all the given options, we can easily figure out the correct option. Here, the word opposite in meaning to ‘simultaneously’ is ‘in unison'. Hence, option ‘c’ is the correct option.

Note:
All the other options are plausible distractions. You must know the meaning of all the given options to find out the correct answer.