We take it for granted now that science has a social responsibility. The idea would not have occurred to Newton or Galileo. They thought of science as an account of the world as it is, and the only responsibility that they acknowledged was to tell the truth. The idea that science is a social enterprise is modern, and it begins at the industrial revolution. We are surprised that we cannot trace a social

sense further back, because we nurse the illusion that the industrial revolution ended a golden age.

23. Which one of the following statements best reflects the thinking of the author about the science?

(a) Science must value the commitment of the scientists.
(b) Science is a product of civilized society and must be used for the promotion of scientific awareness in people.
(c) Industrial revolution was made possible by the advancements in science.
(d) Science must pursue truth but be responsible for social welfare.

24. Consider the sequence

A _ BCD _ BBCDABC _ DABC _ D

that follows a certain pattern. Which one of the following completes the sequence?

(a) B, A, D, C
(b) B, A, C, D
(c) A, A, C, D
(d) A, A, D, C

25. Two persons $P$ and $Q$ enter into a business. $P$ puts ₹ 14,000 more than $Q$ , but $P$ has invested for 8 months and $Q$ has invested for 10 months. If $P$ 's share is ₹ 400 more than $Q$ 's share out of the total profit of ₹ 2,000, what is the capital contributed by $P$ ?

(a) ₹ 30,000
(b) ₹ 26,000
(c) ₹ 24,000
(d) ₹ 20,000

26. $P$ 's salary is 20% lower than $Q$ 's salary which is 20% lower than $R$ 's salary. By how much percent is $R$ 's salary more than $P$ 's salary?

(a) 48.75%
(b) 56.25%
(c) 60.50%
(d) 62.25%

27. A number is mistakenly divided by 4 instead of multiplying by 4. What is the percentage change in the result due to this mistake?

(a) 25%
(b) 50%
(c) 72.75%
(d) 93.75%

28. In an examination, 80% of students passed in English, 70% of students passed in Hindi and 15% failed in both the subjects. What is the percentage of students who failed in only one subject?

(a) 15%
(b) 20%
(c) 25%
(d) 35%

29. A father said to his son, " $n$ years back I was as old as you are now. My present age is four times your age $n$ years back". If the sum of the present ages of the father and the son is 130 years, what is the difference of their ages?

(a) 30 years
(b) 32 years
(c) 34 years
(d) 36 years

30. Consider the following :

23. Which one of the following statements best reflects the thinking of the author about the science?

Science must value the commitment of the scientists.

Science is a product of civilized society and must be used for the promotion of scientific awareness in people.

Industrial revolution was made possible by the advancements in science.

Science must pursue truth but be responsible for social welfare.