Explanation

Usually, Past Indefinite Tense is used after SINCE AGES.

Correct sentence: It has been ages since he arrived

Explanation

"As far as I know, she is sick" is correct and commonly used. It means that based on the information you have, you believe she is sick.

"In my opinion, she is sick" is also correct. It expresses your personal belief or judgment.

So, the correct and more natural options are:

B) As far as I know, she is sick.

C) In my opinion, she is sick.

Explanation

incorrect: She will be very angry unless we do not reach there on time

correct: She will be very angry if we do not reach there on time

If is used to express a condition. 

We cannot use NOT after UNLESS. 

Explanation

25 / 100 = 1 / 4 [ Dividing numerator and denominator by their HCF which is 25 ]

 So, 25% as a fraction is 1 / 4.

Explanation

Let number=x

According to situation 1/5X- x/4=100

X/5-X/4=100

4X-5X/20=100

-X/20=100

-X=100*20

-X=2000

Multiply by -1 X=-2000

Explanation

It can be written as 7/13

And for percentage, we have to multiply with 100 So, 7/13 * 100 = 700/13 =53.00

Given answers near to 52%

Explanation

JWST was launched into space on 25 December 2021.

NASA launched James Webb Space Telescope in the year 2021

The world’s largest and most powerful space telescope “James Webb Space Telescope” 

Launch site: Guiana Space Centre

Explanation

InCorrect the sentence: We often walk across the fields

correct sentence:  We often walk over the fields

Explanation

Silicon is not the conductor

***
Aluminum and gold are metals so they are good conductors of electricity.

Now graphite is an allotropic form of carbon and is the only nonmetal that can conduct electricity.

Silicon is a semiconductor. 

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VU LDC UDC FIA PAPER 27-12-2021

Explanation

Accepted proposal: rejected proposal

75%:25%

75/25:25/25

3:1