The Venn – diagram for Google, Alphabet, and Yahoo is shown here:

Alphabet is a parent company of Google, whereas yahoo is another mail service. So, this depicts the clear relation among these.

Hence, option A is the correct answer.

The pattern is:

x/7 + 3

574/7+ 3 = 82 + 3 = 85,

In the same way,

21/7 + 3 = 3 + 3 = 6

Hence, option B is the correct answer.

In this question, we show that all word arranged alphabetically order as in a dictionary:

4. Dabble
3. Daboecia
1. Daucus
2. Delicate

So the correct sequence is 4, 3, 1, 2.

Hence, option A is the correct answer.

● India is separated from Sri Lanka by Palk Strait. The strait is named after Robert Palk, who was a governor of Madras during the rule of East India Company

● 9⁰ Channel separates Lakshadweep and Minicoy.

● 10⁰ Channel separates The Andaman Islands and Nicobar Islands from each other in the Bay of Bengal.

● Dover strait separates the English Channel and North Sea.

* Tamasha is a traditional form of Marathi theatre, often with singing and dancing, widely performed by local or travelling theatre groups within the state of Maharashtra, India.

* Maach is a musical folk theatre form of Madhya Pradesh which has been an integral part of the local culture of the Malwa region. Performed mostly by men who also don female roles, the performance art form uses satirical humour in its songs and dialogues to make pertinent social commentary.

* Mudiyettu is a ritual dance drama from Kerala based on the mythological tale of a battle between the goddess Kali and the demon Darika.

* Bhavai is one of the traditional folk dances of Rajasthan. This dance basically involves women dancers balancing 8 to 9 pitchers on their heads and dancing simultaneously.

Hence, option A is the correct answer.

Let the age of father be x

Age of son will be x – 25

According to the question,

x – 10 = 6x – 150 – 60

5x = 200

X = 40

Ratio of their ages 10 years later = (40+10)/(40-25+10) = 2:1

• The first in the sequence should be the one that introduces us to the theme of the passage. Here, the passage is about Natural gas. Thus, P will be the first sequence.

• Q will be the next in the sequence as it shows how it is stored.

• R will be the next as it mentions the use of CNG.

• S will be the final sentence of the sequence as it concludes by adding more uses of CNG with logical reason for its use.

Thus, the correct sequence is PQRS.

After arranging the sentences, the passage will be: - Natural gas is a very important fossil fuel because it is easy to transport through pipes. It is stored under high pressure as compressed natural gas (CNG). CNG is used for power generation. It is now also being used as a fuel for transport vehicles because it is less polluting.

Hence, option C is the correct answer.

Option C has the grammatically correct sentence. 

• Option A is wrong because the correct adjective is "caustic".
  
• Option B is wrong because of the use of "as" in place of "so" before the adjective "caustic".
  
• Option D is wrong because we need an adjective in place of the adverb "caustically".