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Question : Sentences of a paragraph are given below. While the first and the last sentences ( 1 and 6) are in the correct order, the sentences in between are jumbled up (A to D). Arrange the sentences in the correct order to form a meaningful and coherent paragraph.
1. Biogas is a mixture of methane, carbon dioxide and hydrogen with others. A. Biogas is produced by anaerobic degradation of animal wastes (some plant wastes) in presence of water. B. Thus, biogas is a non-polluting, cleaned and low cost fuel. C. Anaerobic degradation means breakdown of organic matter which is done in the absence of oxygen. D. It is mostly used in rural areas where ample animal and agricultural waste is available. 6. Biogas eliminates the risk of health hazards offered by other fuels.
Option 1: DABC
Option 2: CBDA
Option 3: ACBD
Option 4: BDAC
Correct Answer: ACBD
Solution : The correct choice is the third option.
The initial sentence (A) introduces the concept of biogas as a mixture of methane, carbon dioxide, and hydrogen. The subsequent sentence (C) explains the process of biogas production through anaerobic degradation, clarifying that it occurs in the
Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bracketed part of the sentence. In case no improvement is needed, select "No Improvement".
Hardly had I finished cooking dinner (before) Rajesh arrived.
(1) when
(2) then
(3) while
(4) No Improvement
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 1
Solution : The sentence can be improved using the first option i.e. "when".
'Before' should be replaced with 'when' to convey the meaning that Rajesh arrived as soon as the speaker had finished cooking. The other options, 'then' and 'while' are not the appropriate conjunctions
to be
Question : Directions: In the following question, you have to identify the correct response from the given premises stated according to the following signs. In a certain code language, – represents ×, ÷ represents +, + represents ÷, and × represents –. Find out the answer to the following question. 15 – 6 + 10 × 3 ÷ 2 = ?
Option 1: 24
Option 2: 9
Option 3: 2
Option 4: 8
Correct Answer: 8
Solution : Given: 15 – 6 + 10 × 3 ÷ 2 = ?
After replacing the mathematical signs as per the directions in the question, the equation becomes – 15 × 6 ÷ 10 – 3 + 2 = ? = 15 × 0.6 – 3
Question : Select the appropriate ANTONYM of the underlined word to fill in the blank.
The flow of the river is very rapid now. Let's go in when it's a little_____________.
Option 1: fast
Option 2: quick
Option 3: delayed
Option 4: slow
Correct Answer: slow
Solution : The correct choice is the fourth option.
Explanation: The word "rapid" means fast or quick. Therefore, the opposite, or antonym, is a word that represents slowness. The word "slow" accurately conveys the opposite meaning of "rapid."
So, the correct sentence would be: "The flow of
Question : In the following question, out of the given four alternatives, select the alternative which best expresses the meaning of the Idiom/Phrase.
Born with silver spoon in one's mouth
Option 1: To accomplish two tasks in one attempt
Option 2: A work which needs tremendous energy
Option 3: Useful for one's purpose
Option 4: Born in a very rich family
Correct Answer: Born in a very rich family
Solution : The fourth option is the correct choice.
Born with a silver spoon in one's mouth is an idiom that means being born into a wealthy or privileged family. The phrase suggests that someone has enjoyed a life of privilege and
Question : Who was the author of the book 'Arthashastra'?
Option 1: Chandragupta
Option 2: Megasthenes
Option 3: Chanakya
Option 4: Seleucus Nicator
Correct Answer: Chanakya
Solution : The correct answer is Chanakya.
The famous philosopher Chanakya authored the Indian Sanskrit text "Arthashastra", a work on statecraft. It contains information on the administrative structure, political structure, military tactics and economic policies of the Mauryan Empire during Chandragupta's rule.
Question : The cube of 105 is:
Option 1: 1157625
Option 2: 1175625
Option 3: 1185625
Option 4: 115826
Correct Answer: 1157625
Solution : Here, (105)3 = (100 + 5)3 = 1003 + 53 + 3 × 100 × 5 × (100 + 5) [Using the formula (a + b)3 = a3 + b3 + 3ab(a + b)] = 1000000 + 125
Question : If $a^{2}+b^{2}+c^{2}-ab-bc-ca=0$, then
Option 1: $a=b=c$
Option 2: $a\neq b=c$
Option 3: $a=b\neq c$
Option 4: $a\neq b\neq c$
Correct Answer: $a=b=c$
Solution : Given: $a^{2}+b^{2}+c^{2}-ab-bc-ca=0$ Multiplying the whole equation by 2, $2a^{2}+2b^{2}+2c^{2}-2ab-2bc-2ca=0$ ⇒ $(a-b)^2+(b-c)^2+(c-a)^2=0$ ⇒ $(a-b)^2=(b-c)^2=(c-a)^2=0$ [If the sum of squares of three numbers is zero, then each number will also be zero] ⇒ $a=b=c$ Hence, the correct answer is $a=b=c$.
Question : Choose the correct meaning of the given idiom. Turn over a new leaf.
Option 1: To begin again.
Option 2: To stop finally.
Option 3: To plant a tree.
Option 4: To take a break.
Correct Answer: To begin again.
Solution : The first option is the correct choice.
The given idiomatic expression, turn over a new leaf, is often used when someone decides to change his behaviour, habits, or attitude for the better, usually after a period of difficulty, mistakes, or negative behaviour.
It
Question : Directions: In the following question, the given sentence has four parts marked P, Q, R, and S. Choose the part of the sentence with the error and select it as your answer. If there is no error, select 'No Error (S)' as your answer.
(P) This laboratory of physicists is (Q) not only equipped with (R) all state-of-the art instruments but also with outstanding physicists. (S) No Error
Correct Answer: 2
Solution : The correct choice is the second option.
"Not only" needs to be followed by a parallel expression to maintain proper grammatical structure. Here, the verb equipped should be followed by "not only" to maintain parallelism with the corresponding conjunctions, "but also".
Therefore, the correct
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