Correct Answer: Biosphere

Solution : The correct option is a Biosphere.

The Biosphere is the overall ecological system that includes all living things and their interactions, including those with the Lithosphere, Cryosphere, Hydrosphere and Atmosphere. Eduard Suess, a geologist, coined the word Biosphere in 1875 and defined it as

Correct Answer: (4)

Solution : The correct choice is the fourth option. The sentence does not need any improvement.

Avail yourself of something means to make use of an opportunity in your favour, which in the sentence means to make use of the leaves in the form of credit. 

Correct Answer: (304, 19, 16)

Solution : Given:
(377, 13, 29); (564, 12, 47)

Here, (377, 13, 29)→377 ÷ 13 = 29
(564, 12, 47)→564 ÷ 12 = 47

Let's check the options –
First option: (227, 25, 9)→227 ÷ 25 = 9.08 ≠ 9
Second option: (304, 19, 16)→304

Correct Answer: VZC

Solution : Let's check the options –

First option: SWA; S + 4 = W; W + 4 = A
Second option: UYC; U + 4 = Y; Y + 4 = C
Third option: VZC; V + 4 = Z; Z + 3 = C
Fourth

Correct Answer: 15°

Solution :
In a circle, the radius is perpendicular to the tangent at the point of tangency. This means the angle between the radius (OQ) and the tangent (PQ) is 90°.
Given that the $\angle$POQ is 75°,
$\angle$OPQ = 180° – 90° – 75° = 15°
Hence,

Correct Answer: Himachal Pradesh

Solution : The correct option is Himachal Pradesh.

Nati is a popular folk dance in the Indian state of Himachal Pradesh. It is traditionally performed during the region's festive occasions, celebrations, and social gatherings. Its lively and rhythmic movements characterise Nati, and it often involves

Correct Answer: 111

Solution : Given:
The sum of the ages of the mother, daughter, and son = 87 years

Let the mother's present age be A years, the daughter's present age be B years, and the son's present age be C years.
⇒ A + B + C =

Correct Answer: World Environment Day

Solution : The correct answer is World Environment Day.

World Environment Day is celebrated on 5th June, and the theme for 2023 is "Beat Plastic Pollution." Air Force Day in India is observed on 8th October. This day commemorates the official induction of the

Correct Answer: Rs. 13800

Solution : Given:
Total simple interest = Rs. 7728
Rate = 7% per annum
Time: 8 years.
Simple interest (SI) = $\frac{(\text{Principal × Rate × Time})}{100}$
Let the principal amount be P.
So, 7728 = $\frac{P × 7 × 8}{100}$
⇒ P = $\frac{772800}{7 × 8}$

Correct Answer: 6

Solution : $y^{3}-y=y(y^{2}-1)=y(y-1)(y+1)$
This product includes three consecutive integers: $y-1$, $y$, and $y+1$
In any set of three consecutive integers, at least one number is always a multiple of 3 and one is always even.
Hence, the correct answer is 6.