Correct Answer: Underground

Solution : The correct option is the second option.

Subterranean means underground or beneath the earth's surface. In the context of the sentence, it refers to the Formosan termites' colonisation underground, emphasising their activity beneath the surface. Underground refers to being beneath the surface of the earth,

Correct Answer: 1 : 125

Solution : Let the radii r₁ = $k$ and r₂ = 5$k$
According to the question,
⇒ Volume of sphere 1 (V1​) = $\frac{4}{3}\pi k^{3}$
⇒ Volume of sphere 2 (V2) = $\frac{4}{3}\pi (5k)^{3}$ = $\frac{4}{3}\pi (125)k^{3}$
⇒ Ratio of volumes = $\frac{V1}{V2​}$

Correct Answer: 91 : 41

Solution : Given: Ratio of milk and water in 1st vessel = 5 :1
The ratio of milk and water in 2nd vessel = 6 : 5
Let both the vessels have $x$ litres of mixtures.
Total quantity of milk = $\frac{5x}{6}+ \frac{6x}{11}=\frac{91x}{66}$
Total quantity

Correct Answer: 130

Solution : Given numbers = 260 and 390
LCM = 780
We know,
Multiplication of two numbers = HCF × LCM
⇒ 260 × 390 = 780 × HCF
⇒ HCF = 130
Hence, the correct answer is 130.

Correct Answer: Karnataka

Solution : The correct answer is Karnataka.

The upper house of the Karnataka state legislature is called the Karnataka Legislative Council, formerly known as the Mysore Legislative Council.

The lower house of the bicameral legislature in India is called the Legislative Assembly, and Karnataka is one

Correct Answer: 50%

Solution : According to the question,
Initial Value (2012) = 28
Final Value (2013) = 14
$\therefore$ Percentage Decrease $=\frac{\text{ Initial Value – Final Value}}{\text{ Initial Value }} × 100 = \frac{ 28 – 14}{ 28} ×100 = \frac{ 14}{ 28}×100  = 50\%$
Hence, the correct answer

Correct Answer: 8

Solution : 1.65 × 1.65 × 1.65 + 0.35 × 0.35 × 0.35 + 3.465
= (1.65)³ + (0.35)³ + 3 × 1.65 × 0.35 × (1.65 + 0.35)
Using $(a + b)^3 = a^3+b^3 + 3ab (a+b)$
= (1.65 + 0.35)³
= 2

Correct Answer: Abstruce

Solution : The incorrectly spelt word among the options is the third option.

Explanation: 

To determine the correct spelling, it is essential to be familiar with the correct form of the word.

The term abstruse refers to something difficult to understand or comprehend. There should be a 

Correct Answer: 80 mins

Solution : Given: Anil alone takes 2 hrs 40 mins to complete a work and Sumit alone can complete the same work in half the time of Anil.
2 hrs 40 mins = (2 × 60) + 40 = 160 mins.
So, the time taken Sumit

Correct Answer: Warming of the Earth because of trapping of radiations by the Earth's atmosphere

Solution : The correct option is Warming the Earth because of the trapping of radiation by the Earth's atmosphere

The greenhouse effect is a natural process in which greenhouse gases in the Earth's atmosphere trap