Correct Answer: 45%

Solution : Amount of water in 6 litre of 40% alcohol = $\frac{60\:\times\:6}{100}$
= 3.6 litres

According to the statement,
8 litres of solution also contains 3.6 litres of water.
Therefore, % of water in solution = $\frac{3.6}{8}$ × 100
= 45%

So, 45% of water is

Correct Answer: Grandfather

Solution : As per the given information, the family tree will be as follows –

Here, the quadrilateral represents the male, and the circular figure represents the female in the figure.

So, from the above family tree, A is the grandfather of F's child. Hence, the fourth

Correct Answer: times

Solution : The correct option is the fourth option.

In this context, times refer to the current era or period.
Using time helps convey the idea that the need for healthy competition is relevant and significant in the current period.

Correct Answer: RNA

Solution : The correct option is - RNA

Transcription is a process that turns DNA into RNA. Protein, which gives an organism its form, receives genetic information from DNA. The consecutive processes of transcription (from DNA to RNA) and translation (from RNA to protein) allow for this

Correct Answer:

Solution : As per mirror image properties, closer things appear closer to the mirror in reflection.
According to the information provided, if the mirror is placed on the right side of the figure, the right of the reflected image will appear as the left, and the left will

Correct Answer: at the eye

Solution : The error lies in the first option.

Explanation:
The preposition "in" is used with the phrase "looked him in the eye" to indicate direct eye contact. The original sentence incorrectly used "at" instead of "in." The corrected version maintains proper grammar and idiomatic

Correct Answer: strangely

Solution : The second option is the correct answer.

Strangely means unusually or unexpectedly; it fits well with the idea of feeling elated in an unexpected manner.

The meanings of the other options are as follows:

• Commonly means frequently or generally occurring; happening often.
• Customarily means according

Correct Answer: 30 years

Solution : The correct answer is 30 years.

Article 84 of the Indian Constitution mentions the qualifications to become a member of the Rajya Sabha. It mentions that the candidate should be a citizen of India and must have completed 30 years of age

Correct Answer: 6974

Solution : Given: The series is 
$\begin{aligned} & S 1=2,9,16, \ldots \ldots, 632 \\ & S 2=7,11,15, \ldots \ldots, 743\end{aligned}$.
From series $S1$ and $S2$, first common term = 23, second common term = 51.
⇒ $d=51–23=28$
Use the formulas,
$a_n=a+(n–1)d$,
$S_n=\frac{n}{2}[2a+(n–1)d]$,
where $a_n$, $n$, $a$, $d$,

Correct Answer: an opportunity for improvement

Solution : The first option is correct.

Explanation: The phrase some room for improvement is an idiomatic expression that implies the availability of opportunities for enhancement or advancement. In this context, the most fitting option that conveys a similar meaning is an opportunity for