Correct Answer: $\frac{76}{3} \pi$

Solution : Given: Inner radius of 2 units and outside radius of 3 units.
The volume of a spherical shell is $\frac{4}{3}\pi(R^{3} - r^{3})$, where the outer radius is $R$ and the inner radius is $r$.
$=\frac{4}{3}\pi(3^{3} - 2^{3})$
$=\frac{4}{3}\pi(27-8)$
$=\frac{76}{3} \pi$
Hence, the correct answer

Correct Answer: 2021 and 2022

Solution : The correct answer is 2021 and 2022.

Only once, in 2021 and 2022, was there no chief guest at India's Republic Day celebrations in two consecutive years because of the COVID-19 pandemic.

Correct Answer: Repulcive

Solution : The correct choice is the second option.

Repulsive is an adjective used to describe something that evokes a strong feeling of disgust or aversion due to its unpleasant or offensive nature.

The meanings of the other options are as follows:

• Nocturnal: relating to or occurring

Correct Answer:

Solution : According to the general information, both laptops and microwave ovens are electronic gadgets. So, their circles will lie inside the circle of electronics. But laptops and microwave ovens are not related to each other. So their circles will be drawn separately.
The Venn diagram is as

Correct Answer: 50

Solution : Production of the B type of the cycle in 2000 = 160
Production of the E type of the cycle in 2001 = 80
Required percentage = $\frac{\text{Production of E type in 2001}}{\text{Production of B type in 2000}}$× 100
= $\frac{80×100}{160}$ = 50%
The production

Correct Answer: 360

Solution : Let the time taken by car A be $x$ hour.
So the time taken by car B is $(x–1)$ hour.
According to the question,
$72x = 90(x – 1)$
⇒ $90x–72x = 90$
⇒ $18x = 90$
⇒ $x = \frac{90}{18}=5$ hours
So, the distance

Correct Answer: Reacts with haemoglobin

Solution : The answer is Reacts with haemoglobin.

Carbon monoxide is highly toxic to humans and animals when inhaled. It binds to haemoglobin in red blood cells more tightly than oxygen, reducing the blood's ability to transport oxygen to body tissues. This can lead to

Correct Answer: $66\frac{2}{3}\%$

Solution : Given: A's salary is 40% less than B.
Let salary of B = 100 units
Then, salary of A = B – 40% of B = 100 – ($\frac{40}{100}$ × 100) = 60 units
Percentage of B's salary more than A $=\frac{B-A}{A} × 100 =

Correct Answer: Focusing attention on public issues

Solution : The Correct Answer is-  Focusing attention on public issues

As a government run by, for, and of the people, public opinion is very important in democracies. It's important to consider public opinion if you want a democratic government. By focusing on

Correct Answer: Procrastinate

Solution : The correct choice is the first option.

Procrastinate means to delay or postpone tasks, especially out of laziness or a tendency to avoid doing them promptly.

The meanings of the other options are as follows:

• Multi-task means engaging in multiple tasks simultaneously.
• Leave means to