Correct Answer: James Augustus Hickey

Solution : The correct option is James Augustus Hickey.

The first newspaper in India was started by James Augustus Hickey, an Irishman, in January 1780. The newspaper was named The Bengal Gazette, or Calcutta General Advertiser. It was a weekly publication and played a significant role in the history of Indian journalism.

Correct Answer: 4 years

Solution : Given:
The age of the wife was 35 years and the age of the son was 7 years.

According to the question –
The age of the wife when her son was born was (35 – 7) = 28 years 
But, the age of the man was 32 years old when his son was born. 
Therefore, the difference in age between the man and his wife is (32 – 28) = 4 years.

So, the difference in age between the man and his wife is 4 years. Hence, the fourth option is correct. 

Correct Answer: call it

Solution : The correct answer is the first option.

Call it: It is often used to suggest making a decision or judgement.

The meanings of the other phrasal verbs are as follows:

Call off: It means to cancel or abort a planned event or action.

Call at: It means to visit or stop briefly at a place.

Call in: It means to ask for or request someone's help or expertise.

The complete sentence should be: "I am exhausted; let's call it a day".

Correct Answer: Aqua regia

Solution : The correct answer is Aqua regia.

Aqua regia is not a food preservative. It is a highly corrosive mixture of nitric acid and hydrochloric acid. It is typically used for dissolving noble metals, not for preserving or extending the shelf life of food.

Correct Answer: The Palas, The Pratiharas and The Rashtrakutas

Solution : The correct option is The Palas, The Pratiharas and The Rashtrakutas.

The Tripartite Struggle, also known as the Kannauj Triangle Wars, took place in the 8th and 9th centuries AD in India. The three main Indian dynasties involved in this conflict were the Palas, the Pratiharas, and the Rashtrakutas. These dynasties fought for control over the region of Kannauj, a strategically important city in North India.

Correct Answer: Both conclusions I and II follow

Solution : The possible Venn diagram according to the given statements is as follows –

Let's analyze the conclusions –
Conclusion (I): Some elephants are tigers – From the Venn diagram, the circle of a tiger is completely inside the circle of the elephant. Therefore, this conclusion is true.
Conclusion (II): Some elephants are chimpanzees – From the Venn diagram, the circle of chimpanzees intersects with the circle of elephants and has a common area between them. Therefore, this conclusion is true.

So, both conclusions I and II follow. Hence, the third option is correct.

Correct Answer: 28.6 %

Solution : According to the question
Number of cars in 70 - 80 km/h range(A) = 90
Number of cars in 50 - 60 km /h range(B) = 70
Use: A is more than B in percentage  = $\frac{(A- B)}{B}$×100
⇒ Required percentage = $\frac{90 - 70}{70}$×100 
= 28.56% ~ 28.6%
Hence, the correct answer is 28.6%.

Correct Answer: 0.25

Solution : Given:
?, 5, 30, 186, 1309, 10480

Multiply and add the sequential natural numbers to the previous term of the series –
(5 × 5) + 5 = 25 + 5 = 30
(30 × 6) + 6 = 180 + 6 = 186
(186 × 7) + 7 = 1302 + 7 = 1309
(1309 × 8) + 8 = 10472 + 8 = 10480
Similarly, (? × 4) + 4 = 5→(? × 4) = 1→(?) = 0.25

So, 0.25 is the missing term of the given series. Hence, the first option is correct.

Correct Answer: 31 years

Solution : Let the present age of the father and son be F and S years respectively.

The father's present age is 1 more than 5 times his son's age ⇒ F = (5 × S) + 1
Father's age after 3 years = (5 × S) + 4
Son's age after 3 years = S + 3
After 3 years, the father's age would be 2 less than four times the son's age.
⇒ (5 × S) + 4 = 4 × (S + 3) – 2
⇒ (5 × S) + 4 = (4 × S) + 12 – 2 = (4 × S) + 10
⇒ S = 6
⇒ F = (5 × S) + 1
= 5 × 6 + 1 = 30 + 1 = 31 years.

So, the present age of the father is 31 years. Hence, the third option is correct.

Correct Answer: 3

Solution : Use the formula, $\text{Average} = \frac{\text{The sum of all values}}{\text{The total number of the values}}$.
The average number of trees planted in state A over the years $=\frac{70+90+78+92+100}{5}=\frac{430}{5}=86$
There are 3 years in 2015, 2016, and 2018 in which the number of trees planted in state B is more than the average number of trees planted in state A over the years.
Hence, the correct answer is 3.