Correct Answer: 3240

Solution : If 18% = 720
Then 81% = $\frac{(720×81)}{18}$ = 3240
Hence, the correct answer is 3240.

Correct Answer: earthquakes

Solution : The correct answer is earthquakes.

Earthquakes on convergent tectonic plate borders create the majority of tsunamis. These are also seismic sea waves and are one of nature's most powerful and destructive forces. Tsunamis are large-wavelength water waves created by seismic movements on the ocean floor.

Correct Answer: 3, 1, 4, 2

Solution : Given:
1. Brahmaputra 2. Atlantic 3. Chilka 4. Bay of Bengal

The arrangement of water bodies according to their size is as follows –
1. Chilka is a lake that is smaller than a river.
2. Brahmaputra is a river that is

Correct Answer: Columns I, III and V

Solution : Here, the III column is 4 times column I, and column V is also four times column III.
From Column I to Column III: 
4 × 4 = 16,
6 × 4 = 24,
8 × 4 = 32,
12 ×

Correct Answer: 96575368

Solution : Given:
PRABA is coded as 27595 and THILAK is coded as 368451.

The letters of the PRABA are coded with equivalent numbers given in the question –

Thus, PRABHA is coded as 27595.
And, THILAK

Correct Answer: Cyclical unemployment

Solution : The correct option is Cyclical Unemployment.

The type of unemployment that is the result of a depression or a prolonged economic downturn is called "Cyclical Unemployment". During a recession or economic depression, businesses may cut back on production, leading to a decline

Correct Answer: Gram Sabha

Solution : The correct option is Gram Sabha.

A Gram Sabha is a meeting of all adults who reside in the area covered by a Panchayat. It serves as a forum for the local community to discuss various issues related to their village or community and

Correct Answer: monsoon

Solution : The correct option is monsoon.

The winds in a typical monsoon environment, like the one in South Asia, change their direction according to seasonal variations in the temperature between the land and the sea. A low-pressure system forms over the land throughout the summer

Correct Answer: 106 km

Solution : We know that,
Upstream speed = $x - y$ and downstream speed = $x + y$
Where $x$ is the speed of the boat in still water and $y$ is the speed of the stream
Given that $x + y = 22$ km/hr and

Correct Answer: No substitution required

Solution : The correct choice is the fourth option.

Explanation: The underlined part of the sentence originally uses the past tense verb "saw," which is the correct form in this context.The sentence is grammatically and structurally correct and requires no substitution.