Correct Answer: A letter in verse form was written by him to his friend.

Solution : The third option is correct.

Passive voice is the voice in which the object experiences an action rather than the person who performs the action. Hence, the object in the active voice becomes the

Correct Answer: × and ÷

Solution : Given:

6 ÷ 17 × 51 + 6 – 12 = –4

Let's check the options —

First option: × and ÷;

After interchanging the signs, the equation becomes 6 × 17 ÷ 51 + 6 – 12 = –4. So, this option

Correct Answer: $\sqrt{3}$

Solution : Given:
$\cos x=-\frac{1}{2}, x$ lies in third quadrant.
$\sin^2x=1-\cos^2x=1-(-\frac{1}{2})^2=\frac{3}{4}$
⇒ $\sin x= \pm \frac{\sqrt{3}}{2}$
As $x$ is in the 3rd quadrant therefore $\sin x=- \frac{\sqrt{3}}{2}$
$\therefore \tan x=\frac{\sin x}{\cos x}=\frac{- \frac{\sqrt{3}}{2}}{-\frac{1}{2}}=\sqrt{3}$
Hence, the correct answer is $\sqrt{3}$.

Correct Answer: Weak

Solution : The correct choice is the third option.

Feeble means lacking physical strength, and weak is a correct synonym for the word, as it has the same meaning because it also means someone lacking physical strength.

The meanings of the other options are as follows:

• Unheedful

Correct Answer: Switzerland

Solution : The correct option is Switzerland.

Switzerland is home to Gotthard Base, the longest tunnel in the world. From Erstfeld in the north to Bodio in the south, it passes beneath the Swiss Alps. With a depth of 2,300 meters, the tunnel is 57 kilometres

Correct Answer: $\frac{1}{9}$

Solution : Let the two numbers be $x$ and $y$.
We know (HCF) × (LCM) = Product of two numbers
Given HCF = 3 and LCM = 54
⇒ $x × y = 3 × 54$
Also, $x + y = 18$
Now to calculate, $\frac{1}{x} +

Correct Answer: Vitamin C

Solution : The correct option is Vitamin C.

Bleeding of gums and loosening of teeth are often caused by a deficiency of vitamin C, also known as ascorbic acid. Vitamin C is essential for maintaining healthy gums and teeth. Its deficiency can lead to a condition

Correct Answer: 300

Solution : We know, $M_1D_1= M_2D_2,$
Where, $M_1$ and $M_2$ are men and $D1$ and $D_2$ are days.
450 men can finish the construction of an apartment in 20 days.
Here, $M_1=450, D_1=20,$ and $D_2=30$
So, $450×20=M_2×30$
$\therefore M_2=300$
Hence, the correct answer is 300.

Correct Answer: $\frac{20}{27}$ m/sec

Solution : Given, The speed of a boat in still water = $5 \frac{1}{3}$ km/hr = $\frac{16}{3}$ km/hr
Let the speed of the stream be $x$ km/hr.
Let the time taken to row along the stream $t$ hours.
Then, the time taken to row against the

Correct Answer: Guglielmo Marconi

Solution : The correct option is Guglielmo Marconi.

Guglielmo Marconi was a trailblazing scientist who, in the 1890s, used radio waves to send signals across several kilometres. Marconi, an Italian inventor and electrical engineer, is credited with being one of the key figures in the development