Correct Answer: have become enormously

Solution : The correct choice is the fourth option.

Explanation: According to subject-verb agreement, the verb tense needs to match the subject ("books"), which is plural. "Have become" is the correct present perfect tense for plural subjects. "Enormously" correctly modifies "popular" to convey the extent

Correct Answer: BPF

Solution : Given:
WOR : WSZ :: CLW : ?

Reverse the letters of WOR and then add 5, 4, and 3 to the place value of the letters of the resultant, to get the next term –
Like, WOR : WSZ→On reversing, we get – ROW

Correct Answer: working

Solution : The correct option will be the second option.

In this context, working suggests that meteorologists are actively engaged in efforts to comprehend or understand sting jets, as per the present continuous tense.

Therefore, the correct answer will be working.

Correct Answer: Saccharin

Solution : The correct answer is Saccharin.

Saccharin is an artificial sweetener that lacks nutrients. It is made in a laboratory by oxidising o-toluene sulfonamide or phthalic anhydride. In the 1870s, a researcher at Johns Hopkins University in Baltimore, Maryland, named Constantine Fahlberg, made the discovery.

Correct Answer: United States of America

Solution : The correct answer is the United States of America.

The Super Bowl is an annual Championship game of football in the United States of America. The game is hosted by a different city each year. It is a Championship game of the

Correct Answer: 1% loss

Solution : Given: The marked price is 10% higher than the cost price. A discount of 10% is given on the marked price.
Let the cost price (CP) = 100
So, the marked price (MP) = (100 + 100 × $\frac{10}{100}$) = 110
After a 10%

Correct Answer: Unity and integrity

Solution : The correct option is Unity and integrity

The term fraternity, originating from the French language, signifies brotherhood, friendship, community and cooperation. An emphasis on fraternity was inserted in the Preamble by the Indian Constitution drafting committee. The commitment to brotherhood safeguarding the

Correct Answer: (2)

Solution : The error lies in the second part of the sentence.

The sentence contains tense inconsistency as this is the case of a reported speech, which in this case is the past tense. Thus, am should be replaced with was to make the sentence grammatically accurate.

Correct Answer: 512

Solution : Given:
5 : 125 :: 8 : ?

Cube the first number, to get the second number in each number pair –
Like, 5 : 125→(5)³ = 125
Similarly, follow the same pattern for 8 : ?→
(8)³ = 512

So, the required

Correct Answer: 1951-1981

Solution : The correct answer is 1951-1981.

India's population boom is said to have occurred between 1951 and 1981. The country's high fertility rate, combined with a sharp decline in the death rate, was the cause. The yearly growth rate, on average, reached 2.2 per cent.