Correct Answer: Black

Solution : Given:
Cotton : White :: Coal : ?

The colour of cotton is white.
Similarly, the colour of coal is black.

Hence, the fourth option is correct.

Correct Answer:

Solution : As per mirror image properties, closer things appear closer to the mirror in reflection.
According to the information provided, if the mirror is placed on the right side of the figure (on line MN), the right of the reflected image will appear as the left, and

Correct Answer: 127.27%

Solution : The total percentage of illiterates in D= 44 %
Percentage of rest of illiterates = 56%
$\therefore$ Percentage of the total number of illiterates in A, B, and C to the illiterates in D in 2021
= $\frac{56}{44}\times 100$ = 127.27%
Hence, the correct answer

Correct Answer: 933

Solution : The correct answer is 933.

As of the 2001 Census of India, the sex ratio was reported to be 933 females per 1000 males. This figure indicates the number of females for every 1000 males in the population. The sex ratio is an important demographic

Correct Answer: Electromagnetic waves do not show interference and diffraction.

Solution : The correct option is Electromegnetic waves do not show interference and diffraction.

Electromagnetic waves, like light, demonstrate both interference and diffraction. Interference arises from the interaction of two or more waves, leading to patterns of constructive and

Correct Answer: Canada

Solution : The correct option is Canada.

This incident refers to the year 1914. The passengers on the ship were mostly Sikh immigrants. Komagata Maru is a Japanese steamship. In this incident, people from British India tried to enter Canada, but they were prohibited, and they returned

Correct Answer: Lactobacillus

Solution : The correct option is - Lactobacillus

The fermentation of milk into curd is primarily due to the action of lactic acid bacteria. Specifically, the most common bacteria responsible for this process is Lactobacillus bulgaricus and Streptococcus thermophilus, although other lactic acid bacteria strains may also

Correct Answer: 27°

Solution : We have to find $\angle AOB$.
In quadrilateral APBO,
$\angle A = \angle B = 90°$
Now, $\angle P + \angle A + \angle B + \angle O = 360°$
⇒ $54° + 90° + 90° + \angle O = 360°$
⇒ $\angle O =

Correct Answer: $\frac{m^2-1}{m^2+1}$

Solution : $1 + \sin\theta = m\cos\theta$
⇒ $m=\frac{1}{\cos\theta}+\frac{\sin\theta}{\cos\theta}$
⇒ $m=\sec\theta+\tan\theta$
Squaring both sides, we get,
⇒ $m^2 = \sec^2\theta + \tan^2\theta + 2\sec\theta\tan\theta$
We know, $\sec^2\theta = 1+\tan^2\theta$
⇒ $m^2 = 1+\tan^2\theta + \tan^2\theta + 2\frac{\sin\theta}{\cos^2\theta}$
⇒ $m^2 = 1+2\frac{\sin^2\theta}{\cos^2\theta} +2\frac{\sin\theta}{\cos^2\theta}$
⇒ $m^2 = \frac{\cos^2\theta +2\sin^2\theta

Correct Answer: Mir Jafar

Solution : The correct answer is Mir Jafar.

Siraj ud-Daula, the Nawab of Bengal, was defeated and killed in the Battle of Plassey by the British due to the betrayal of the commander of Siraj ud-Daulah’s army, Mir Jafar. Thus, after helping the British defeat Siraj