Correct Answer: Motilal Nehru

Solution : The correct answer is Motilal Nehru.

Motilal Nehru was not associated with the "Prarthana Sabha". The other three individuals, Govind Ranade, Atmaram Pandurang and R.G. Bhandarkar, were associated with the Prarthana Samaj, a religious and social reform movement in 19th-century India. Motilal Nehru, on the other hand, was a prominent figure in the Indian National Congress and a key political leader, in the independence movement.

Correct Answer: $1$

Solution : Given: $\left (0.\overline{11} + 0.\overline{22} \right )\times3$
The fraction form of $0.\overline{11} = \frac{11}{99} = \frac{1}{9}$
The fraction form of $0.\overline{22} = \frac{22}{99} = \frac{2}{9}$
$\left ( 0.\overline{11}+0.\overline{22} \right )\times3 = \left (\frac{1}{9} + \frac{2}{9} \right) \times3 = \frac{1}{3}\times 3 = 1$
Hence, the correct answer is $1$.

Correct Answer: Larva

Solution : Given:
Butterfly : Caterpillar :: Insect : ?

The second term is the initial phase of the first term –
Like in, Butterfly : Caterpillar→The caterpillar is the initial evolving phase of a butterfly.
Similarly, follow the same pattern for Insect : ?→The larva is the initial evolving phase of an insect.

So, the larva is related to the insect in the same way as the caterpillar is related to the butterfly. Hence, the third option is correct.

Correct Answer: Sartorius muscle

Solution : The correct option is the Sartorius muscle.

The sartorius muscle is the longest in the human body. The sartorius muscle goes from the hip to the knee and is involved in hip joint flexion, abduction, and rotation, as well as knee joint flexion, and rotation. It is known as the "tailor's muscle" because it crosses one leg over the other when sitting in a cross-legged stance, which is similar to the posture used by tailors.

Correct Answer: (4)

Solution : The correct answer is the fourth option, as no improvement is required since the sentence is grammatically accurate.

"Call in" means to telephone someone, especially at a workplace.

The meanings of the other options are as follows:

"Called in" is in the past tense and is incorrect as the sentence is in the present tense.

"Call off" means to cancel an event or agreement, which is incorrect.

"Call for" means to make something necessary, which is also incorrect.

Correct Answer: Ribosomes

Solution : The correct option is Ribosomes.

When the cytoplasmic surface of the endoplasmic reticulum (ER) is covered with Ribosomes, it is referred to as "rough". When seen under a microscope, these ribosomes give the rough endoplasmic reticulum its distinctive look. The presence of ribosomes on the rough ER suggests that this region of the ER is engaged in protein synthesis.

Correct Answer: 4

Solution : In Figure 1 and Figure 3, two faces 3 and 6 are common. So, the remaining numbers on the dice are 2 and 1. So, 2 and 1 are the opposite faces of each other in the given dice.

In Figure 3 and Figure 4, two faces 3 and 1 are common. So, the remaining numbers on the dice are 6 and 5. So, 6 and 5 are the opposite faces of each other in the given dice. 

The opposite faces are –

So, 4 is the opposite of face 3. Hence, the first option is correct.

Correct Answer: Sea horse

Solution : The correct option is Sea horse

The seahorse is a distinctive marine fish with an erect posture, a prehensile tail and a striking look. It is a member of the family Syngnathidae and is well-known for the involvement of male seahorses in pregnancy and birth.

Correct Answer: FH

Solution : Given:
BD, CE, DF, EG, ?

Add 1 to the positional value of each letter of the previous term to get the next term.
BD→B + 1 = C; D + 1 = E→CE
CE→C + 1 = D; E + 1 = F→DF
DF→D + 1 = E; F + 1 = G→EG
EG→E + 1 = F; G + 1 = H→FH

So, FH is the missing term in the series. Hence, the third option is correct.

Correct Answer: Delicate

Solution : The correct option is the second option.

Explanation:
Delicate is the best antonym here because it represents the opposite of vigorous, conveying something fragile or easily breakable, contrasting the robustness and strength associated with being vigorous.
The meanings of the other options are as follows:

Extreme means reaching the highest or farthest point.

Energetic means having or showing a lot of energy or enthusiasm.

Hard means difficult or firm.

Therefore, the correct answer is delicate.