The correct answer is option 2 i.e. 3.5 years.

Simple interest = (principal × rate × time)/100

Amount = Principal + S.I

Given, A = 1728

P = 1350

R = 8%

Time = {(A - P) × 100}/(P × r)

= {(1728 - 1350) × 100}/1350 × 8

= (378 × 100)/(1350 × 8)

= 3.5 years

The correct answer is Option 4 i.e. 7.

Let there be 'n' friends in the group

The sum of all observations = Average × Number of observations

⇒ 476 = 68 × n

⇒ n = 476/68 = 7

So, 7 friends are there in the group.

The correct answer is Option 3

The correct answer is option 1 i.e. 7

"Great works present" - "2 75",

"All good works" - "95 6"

"Better present all" - "3 2 6".

Using the given information, the codes for the words can be obtained as follows-

Great - 7

Works - 5

Present - 2

All - 6

Better - 3

Good - 9

Hence, Great is coded as 7.

Hence, the correct answer is 7.

The correct answer is option 3 i.e. Fourth.

The Most extensive and rapid coral bleaching event, the Fourth Global Coral Bleaching event (GCBE4) began in January 2023. It is recorded as the most extensive bleaching event according to the National Oceanic and Atmospheric Administration (NOAA). The current event has surpassed previous bleaching events from 2014 to 2017 by over 11%. As per NOAA, 99.9% of Coral reefs in the Atlantic Ocean have experienced heat stress.

The correct answer is Option 1 i.e. Corrosion.

• The process where the surface of metal corrodes in the presence of moisture or acids is known as corrosion.
• This chemical reaction deteriorates the metal, resulting in the formation of oxides or other compounds on its surface.
• Corrosion can lead to structural damage, weakening of materials, and reduced functionality of metal components, making it a significant concern in various industries such as construction, manufacturing, and transportation.

The correct answer is Option 2 i.e Halogen

• Halogens are a group in the periodic table consisting of six non-metallic elements that constitute Group 17. When halogens react with metals, they produce sodium salts of similar properties. 
• The halogen group is the only periodic table group that contains all three states of matter.
• Fluorine (F)- Gas
• Chlorine (Cl)- Gas
• Bromine (Br)- Liquid
• Iodine (I)- Solid
• Astatine (At)- Solid
• Tennessine (Ts)- Expected to be solid

The correct answer is option 4 i.e. Volt.

The International System of Units (SI) employs the volt (V) as the standard unit for measuring electric potential difference. One volt is defined as the potential difference across a conductor when a current of one ampere dissipates one watt of power. The electric potential difference, often referred to simply as voltage, is crucial in understanding the flow of electric charge in circuits and the operation of electrical devices. It is symbolized by the letter "V" in equations and circuit diagrams.

The correct answer is option 1 i.e. O.

• O positive (O+) is the universal donor for Rh-positive recipients but is not universal for ABO compatibility.
• O positive (O+) blood type is one of the various blood types in the ABO blood group system.

The correct answer is option 3 i.e. 23700 cm².

Area of Circle = π × r², Where r = Radius of the circle = 14 cm

Area = π × 14 × 14 = 22/7 × 14 × 14 = 616 cm²

But this is equal to the perimeter of the rectangle in magnitude

Hence,

Perimeter of the rectangle = 2 × (L + B) = 616 cm , Where L = Length, B = Breadth

And L = (B + 8)

So,

2 × (L + B) = 616

⇒ B + 8 + B = 308

⇒ 2B = 300 = B = 150 and L = 158

Hence,

Area = L × B = 150 × 158 = 23,700 cm²