Correct Answer: A decree had already been passed by the ruler of the community against that decision.

Solution : The fourth option is the correct choice.

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 sentence becomes the subject in the passive voice.

The structure of the passive voice in the case of the past perfect tense is: "Singular object + had + been + past participle form of the verb + 'by' followed by the agent of the action."

Therefore, the correct sentence is: "A decree had already been passed by the ruler of the community against that decision."

Correct Answer: 129

Solution : Given:
123, 125, 127, ?, 131, 133

Add 2 to the previous term to get the next term.
123 + 2 = 125; 125 + 2 = 127; 127 + 2 = 129; 129 + 2 = 131; 131 + 2 = 133

So, 129 is the missing term in the series. Hence, the second option is correct.

Correct Answer: entails

Solution : The fourth option is the correct answer.

The word entails fits well in the context of the sentence. The sentence discusses the meaning of being constant and entails means to involve or necessitate as a consequence. It makes sense in the sentence, conveying that being constant involves repeating a task or action.

The meanings of the other options are as follows:

• Envelops means to surround or enclose.
• Initiates means starts or begins.
• A figure refers to a number or shape.

Correct Answer: INR 1,400

Solution : Given: Salaries of B, C, D, and E are in the ratio of 2 : 3 : 4 : 5 respectively.
Percentage increase = 20%, 30%, 40%, and 50%.
Let the salary of B, C, D, and E be $2x, 3x, 4x,$ and $5x$, respectively.
According to the question,
$4x+0.4(4x)=560$
⇒ $4x+1.6x=560$
⇒ $5.6x=560$
⇒ $x=100$
The sum of the original salaries of B, C, D, and E
$=2x+3x+4x+5x=14x=14\times100=$ INR 1,400
Hence, the correct answer is INR 1,400.

Correct Answer: Rhodophyceae

Solution : The correct answer is Rhodophyceae.

The Rhodophyceae division is the taxonomic classification for these red algae. They are distinguished by their reddish or purple hue, attributed to pigments like phycoerythrin and phycocyanin. These algae play a crucial role in marine ecosystems and have applications in various industries, including food and cosmetics.

Correct Answer: 71

Solution : Let's check the options –
First option: 42; 42 is divisible by 1, 2, 3, 6, 7, 14, 21, 42. It is not a prime number.
Second option: 84; 84 is divisible by 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84. It is not a prime number.
Third option: 91; 91 is divisible by 1, 7, 13, 91. It is not a prime number.
Fourth option: 71; 71 is divisible by only 1 and 71. It is a prime number. 

The fourth option does not follow a similar pattern as the other options. Hence, the fourth option is correct.

Correct Answer: 1-b, 2-a, 3-d, 4-c

Solution : The correct answer is 1-b, 2-a, 3-d, 4-c.

The sex ratio is a demographic metric that shows the number of females per thousand male population. It is an important indicator which shows the status of gender equality and women empowerment in the region. As per the census 2011, Kerala has the highest sex ratio, with 1084 females per thousand males. Puducherry has a sex ratio of 1037, Delhi has 879, and Haryana has the lowest sex ratio with only 868 females per thousand males.

Correct Answer: Hockey

Solution : The answer is Hockey.

Rollin is a term associated with hockey, and it refers to the return of the ball to play after it has crossed the touchline. Major Dhyan Chand was one of the greatest hockey players, not only in India but in the world. The highest sports award in India is also named after Major Dhyan Chand.

Correct Answer: Poison

Solution : The correct option is - Poison

The Latin word "virus," which means poison and other hazardous compounds, is where the word "virus" originates. The minuscule infectious agent known as a virus is able to multiply itself inside the living cells of other organisms. Being parasites, viruses rely on the host organism for food and energy.

Correct Answer: 1954

Solution : The correct answer is 1954.

Linus Carl Pauling received the Nobel Prize in Chemistry in 1954 for his pioneering work on the nature of chemical bonds and their application to unravel the structures of complicated molecules. In the mid-twentieth century, Linus Pauling's research considerably enhanced the science of chemistry by offering deep insights into the fundamental forces that keep atoms and molecules together.