Correct Answer: Stanley Miller

Solution : The correct answer is Stanley Miller.

In the laboratory, Stanley Miller and Harold Urey demonstrated that life began with chemosynthesis. Miller and Urey undertook an experiment in 1952 to recreate the circumstances that occurred on early Earth. They put water, methane, ammonia, and hydrogen

Correct Answer: 24 cm

Solution : The correct option is 24cm.

Wavelength (λ ) can be calculated by dividing the velocity (v) of the wave by the wave frequency (f)

λ = v/f

λ = 360/500 = 0.72

φ= path difference

The path difference between the two points is

Correct Answer: 12%

Solution : Let $R$ be the rate of interest.
Simple interest = $\frac{\text{Principal × Rate × Time}}{100}$
Simple interest on INR 2,500 after 3 years = $\frac{2500×3×R}{100}$
Simple interest on INR 1,500 after 3 years = $\frac{1500×3×R}{100}$
According to the question,
$\frac{1500×3×R}{100}$ + 360 = $\frac{2500×3×R}{100}$
⇒

Correct Answer: 12%

Solution : Let $R$ be the rate of interest.
Simple interest = $\frac{\text{Principal × Rate × Time}}{100}$
Simple interest on INR 2,500 after 3 years = $\frac{2500×3×R}{100}$
Simple interest on INR 1,500 after 3 years = $\frac{1500×3×R}{100}$
According to the question,
$\frac{1500×3×R}{100}$ + 360 = $\frac{2500×3×R}{100}$
⇒

Correct Answer: 2186102

Solution : Given:
28373 is coded as 4166146.

Multiply each digit of the 28373 by 2, to get the required code –
2 × 2 = 4; 8 × 2 = 16; 3 × 2 = 6; 7 × 2 = 14; 3 × 2 = 6

Correct Answer: 65

Solution : Here, multiply the number by 2 and subtract 1 in the clockwise direction to get the next number. 
Like, 17 = 9 × 2 – 1
And, 33 = 17 × 2 – 1
Similarly, 33 × 2 – 1 = 65

So, the missing

Correct Answer: 2

Solution : According to the given statements –
Conclusion 1: A poor man is always a hard worker.
In the given statement a poor man doesn't need to be always a hard worker. So, this conclusion is false.
Conclusion 2: A poor man earns wealth through his

Correct Answer: Energetic

Solution : The correct choice is the fourth option.

The most appropriate synonym is energetic. Dynamic refers to something characterised by constant change, activity, or progress. Similarly, energetic refers to having or showing a lot of energy or enthusiasm, which aligns well with the idea of

Correct Answer: Rs. 10

Solution : Let the price of the turban be Rs. $x$.
Condition:
12 month payment  $= 90 + x$
1 month payment $= \frac{90+x}{12}$
9 month payment = $\frac{90+x}{12}×9$
He worked for 9 months and got Rs. 65 and a turban.
$\frac{90+x}{12} × 9 = 65

Correct Answer: 25

Solution : Given: 18 mechanics can repair 90 cars in 10 days.
We know, $\frac{M_{1}\times D_{1}}{W_{1}}=\frac{M_{2}\times D_{2}}{W_{2}}$,
Where $M_1$ and $M_2$ are men, $D_1$ and $D_2$ are days and $W_1$ and $W_2$ are work done.
⇒ $\frac{18×10}{90}=\frac{M_2×12}{150}$
$\therefore M_2=25$
Hence, the correct answer is 25.