Correct Answer: 25

Solution : Number of days taken by 10 men to complete the work = 40
Number of days taken to complete the work after 4 men left after some days = 50 
Total work = 10 × 40 = 400 units
Let the number of days after the commencement of the work when the four men left be $x$.
So, 10$x$ + 6(50 – $x$) = 400
⇒ 4$x$ = 100
⇒ $x$ = 25
Hence, the correct answer is 25.

Correct Answer: wealthy

Solution : The correct choice is the fourth option.

Wealthy describes individuals who have a significant amount of wealth or are financially affluent. In the context provided, selling the title of Baronet is likely to appeal to wealthy candidates, as they would have the means to purchase such titles.

The meanings of other options are as follows:

• Opulent: It refers to something characterised by wealth, affluence, or luxury. It describes a lavish or rich quality.
• Healthy: It relates to being in a good physical or mental condition, indicating a state of well-being.
• Resourceful: That describes someone who is capable and adept at finding solutions or making the best use of available resources to handle difficult situations or challenges.

Correct Answer: X

Solution : Given:
L, N, Q, S, V, (?)

Add 2 and 3 alternately in the series to find the required alphabet in the series.
L + 2 = N; N + 3 = Q; Q + 2 = S; S + 3 = V; V + 2 = X

X is the missing alphabet in the series. Hence, the fourth option is correct.

Correct Answer: tighten

Solution : The correct word to fill in the blank is the third option.

It means that when prices are going up (inflation), people need to spend less money and be careful with their finances.

The meanings of the other options are as follows:

Shorten: It means to make something shorter in length or duration.

Strengthen: It means to make something stronger or more robust.

Lesson: It refers to a teaching or learning experience.

Therefore, the correct sentence is, "In these days of inflation, we all have to tighten our belts."

Correct Answer: Mitochondria

Solution : The correct option is Mitochondria.

Mitochondria are membrane-bound organelles present in eukaryotic cells such as plants, animals, and fungi. They are essential in the production of energy which is the cell's primary energy currency. Mitochondria are known as a; powerhouse because of their critical involvement in cellular respiration, a process that transforms glucose and oxygen into ATP via a series of chemical processes.

Correct Answer: JJRUCF

Solution : Given:
LABOUR is written as XZSECM and GAINED is written as JJRLCH.

Reverse the letters of LABOUR and then add consecutive numbers to the place value of each letter to obtain the required code –
LABOUR→RUOBAL
Now, add consecutive numbers – R + 6 = X; U + 5 = Z; O + 4 = S; B + 3 = E; A + 2 = C; L + 1 = M
Thus, LABOUR is coded as XZSECM.
And, GAINED is written as JJRLCH –
GAINED→DENIAG
Now, add consecutive numbers – D + 6 = J; E + 5 = J; N + 4 = R; I + 3 = L; A + 2 = C; G + 1 = H
Similarly, follow the same pattern for EARNED –
EARNED→DENRAE
Now, add consecutive numbers – D + 6 = J; E + 5 = J; N + 4 = R; R + 3 = U; A + 2 = C; E + 1 = F

Thus, EARNED is related to JJRUCF. Hence, the first option is correct.

Correct Answer: Pradhan Mantri Ujjwala Yojana

Solution : The correct answer is Pradhan Mantri Ujjwala Yojana.

The Pradhan Mantri Ujjwala Yojana (PMUY) is the scheme. Prime Minister Narendra Modi started it in 2016 for the 50 million Indian households below the poverty line (BPL). The PMUY offers a free LPG connection to the household's head, who must be an adult woman. A stove and a regulator are included in the connection. The recipient also receives a three-year supply of free LPG petrol refills.

Correct Answer: 1

Solution : The correct alternative is the first option: "incomparable."

The adjective "incomparable" effectively conveys the idea that each individual's uniqueness makes him incomparable to others.

Other options suggest changes to the phrase, but they do not improve the sentence. The sentence is now clear and concise in conveying the intended meaning.

Therefore, the correct sentence should be: "Each self is unique, and therefore incomparable."

Correct Answer: Many types of flora & fauna in one forest

Solution : The correct answer is many types of flora and fauna in one forest.

Biodiversity is a broad term which indicates the variety of living organisms in a certain geographical area. Biodiversity can be seen at different levels like a species biodiversity, ecosystem biodiversity, genetic biodiversity etc. Generally it indicates the variety and complexity of an ecosystem.Western ghats is one of the mega-diverse biodiversity hotspots in India.

Correct Answer: Developed nations had better control of inflation

Solution : For the Developed nations,
The change in the rate of inflation in the developed nations = $\frac{14.2-11.8}{11.8}×100$
The change in the rate of inflation in the developed nations = 20.34%
For the USA,
The change in the rate of inflation in the USA = $\frac{12.7-10.3}{10.3}×100$
The change in the rate of inflation in the USA = 23.3%
Hence, the correct answer is 'Developed nations had better control of inflation'.