Correct Answer: (4, 2)

Solution : Given: The coordinates of the point $R(a,b)$ reflected over the origin are $R(–a,–b)$.
The coordinates of $R(–a,–b)$ are reflected over the X-axis to $(–a, b)$.
But $(–a, b)$ $=(–4, 2)$
So, $a=4,b=2$
Thus point R (4, 2)
Hence, the correct answer is (4, 2).

Correct Answer: ALWPH

Solution : Given:
J_SX_WUTNS_P_OYLRKA_

Add 2 in the first and third letter and subtract 4 from the second and fourth letter of the given term –

So, the missing term is ALWPH. Hence, the second option is correct.

Correct Answer: KPAU

Solution : Given:
JPVZ is related to PVBF and HQRS is related to NWXY.

Add 6 to the place value of each letter of JPVZ and HQRS to obtain the required codes –
JPVZ→J + 6 = P; P + 6 = V; V + 6 = B; Z + 6 = F
Thus, JPVZ is related to PVBF.
HQRS→H + 6 = N; Q + 6 = W; R + 6 = X; S + 6 = Y
Thus, HQRS is related to NWXY.
Similarly, follow the same pattern for EJUO –
E + 6 = K; J + 6 = P; U + 6 = A; O + 6 = U

Thus, EJUO is related to KPAU. Hence, the fourth option is correct.

Correct Answer: typically

Solution : The third option is the correct answer.

The sentence provides information about the dimensions of rats, stating that they are generally 5 inches (12 centimetres) or longer. Typically accurately conveys the expected or common size without any extreme variations.

The meanings of the other options are as follows:

• Modestly means with restraint or simplicity.
• Manually means the actions done by hand.
• Surgically means related to surgical procedures

Correct Answer: Formation of Rent Authority Department

Solution : The correct option is the Formation of Rent Authority Department.

The formation of a Rent Authority Department is not considered among the reforms related to agriculture undertaken under the five-year plans. Reforms related to agriculture in the context of five-year plans often include measures to enhance agricultural productivity, improve rural infrastructure, promote irrigation, provide credit facilities to farmers, introduce new technologies, and address issues related to land reforms.

Correct Answer: Wool

Solution : The correct option is - Wool.

Wool is a naturally occurring, renewable resource and a biodegradable material. Any organic material in garbage that can be broken down into carbon dioxide, water, methane, or simple organic molecules by microbes and other living creatures working in composting, aerobic digestion, anaerobic digestion, or similar processes is considered biodegradable waste. 

Correct Answer: 14.625

Solution : Time taken by Jason alone to complete the work = 23.4 days
⇒ Part of work done by Jason alone in a day = $\frac{1}{23.4}$ = $\frac{10}{234}$
Time taken by Rafique alone to complete the work = 39 days
⇒ Part of work done by Rafique alone in a day = $\frac{1}{39}$
Let the time taken by Jason and Rafique together to complete the work = $x$ days
⇒ Part of work done by Jason and Rafique in a day = $\frac{1}{x}$
According to the question,
$\frac{10}{234}$ + $\frac{1}{39}$ = $\frac{1}{x}$
$⇒\frac{1}{x}$ = $\frac{10+6}{234}$= $\frac{8}{117}$
$⇒x$ = $\frac{117}{8}$ = 14.625
Hence, the correct answer is 14.625.

Correct Answer: Mercury

Solution : The correct answer is Mercury.

Biomagnification is the process of accumulation of toxic substances in the body of an organism and it passes and amplifies in the subsequent trophic levels or in a food chain. For an element to biomagnify it has to be fat soluble and it should be long lived. Biomagnification is usually seen in DDT and in metals like Mercury. Mercury pollution causes Minamata disease. 

Correct Answer: INR 2,688 gain

Solution : Cost price = INR 48,000
Selling price after 12% loss = $\frac{48000\times(100-12)}{100}$ = INR 42,240
Selling price after 20% gain = $\frac{42240\times(100+20)}{100}$ = INR 50,688
Profit = Selling price – Cost price = INR (50,688 – 48,000) = INR 2,688
Hence, the correct answer is a profit of INR 2,688.

Correct Answer:

Solution : According to the given figures –
1. The first triangle is changing position in a clockwise direction.
2. The second triangle is changing position in an anti-clockwise direction.
3. The third triangle is changing its position at 180º.
So, following the above pattern, the required figure will be as follows –

Hence, the third option is correct.