Correct Answer: Carbon dating

Solution : The correct option is Carbon dating.

The process of using radiation to establish the age of prehistoric items is known as "radiocarbon dating" or "carbon dating." This approach estimates the age of organic materials by using the decay of radioactive carbon isotopes. It specifically

Correct Answer: $\mathrm{\frac{AD+BC}{AD }}$

Solution :

The area of a trapezium,
$\text{Area} = \frac{1}{2} \times (\text{sum of parallel sides}) \times \text{height}$
$\text{Area}_{ABCD} = \mathrm{\frac{1}{2} \times (AD + BC) \times EF}$
The area of triangle AED,
$\text{Area}_{AED} = \mathrm{\frac{1}{2} \times AD \times EF}$
The ratio of the area of ABCD to

Correct Answer: 3

Solution : The correct choice is the third option.

The phrase not make economic sense should replace not to make economic sense, as modal verbs are to be followed by the base form of the main verb. Here, would is a modal verb and it should

Correct Answer: Body

Solution : Given:
Cells : Tissue :: Organs : ?

Like, a group of cells forms tissues.
Similarly, a group of organs forms a body.

Hence, the third option is correct.

Correct Answer: 2 km

Solution : Let the distance be $x$ km.
According to the question,
Speed = $\frac{\text{Distance}}{\text {Time}}$ 
$\frac{x}{3}–\frac{x}{4}=\frac{5+5}{60}$
⇒ $x=2$
Hence, the correct answer is 2 km.

Correct Answer: 24125

Solution : According to the question, 75% of the T-type cars are sold.
Now, if 75% of the T-type cars produced each year were sold by the company, the number of T-type cars remain unsold
= 350000 $\times$ (90 – 75)% $\times$ (100 – 75)% $+$ 440000

Correct Answer: rainfall

Solution : The correct option is - rainfall

The maximum and minimum temperatures, temperature range, total and seasonal distribution of precipitation, and other factors are used to classify the climatic zones. The most well-known classification scheme was initially created by Wladimir Koppen based on these parameters.

Correct Answer: –2197

Solution : $\frac{r}{13}+\frac{13}{r}=1$
We know that if $x+\frac{1}{x} = 1$, then $x^3 = -1$
Let $\frac{r}{13} = x$
The equation becomes,
$x+\frac{1}{x} = 1$
⇒ $x^2-x+1=0$
$x^3+1^3=(x+1) (x^2-x+1)$
⇒ $x^3+1^3 =0$
⇒ $x^3 = -1$
⇒ $(\frac{r}{13})^3 = -1$
⇒ $r^3 = -2197$
Hence, the correct answer

Correct Answer: Coagulation

Solution : The correct answer is coagulation. 

When the suspended particles in any liquid solution form a precipitate and settle down, then this process is known as coagulation. The most common example of it is coagulation of blood which forms a blood clot and stops bleeding. Similarly

Correct Answer: 25

Solution : Given:
45 : 15 :: 20 : 10 :: 125 : ?

Like, 45 : 15→(45 × 5) = 225; √225 = 15
20 : 10→(20 × 5) = 100; √100 = 10
Similarly, follow the same pattern for 125 : ?→(125 × 5) =