Considering the alarming importance of CSAT in UPSC CSE Prelims exam and with enormous requests we received recently, InsightsIAS has started Daily CSAT Test to ensure students practice CSAT Questions on a daily basis. Regular Practice would help one overcome the fear of CSAT too.We are naming this initiative as Insta– DART – Daily Aptitude and Reasoning Test. We hope you will be able to use DART to hit bull’s eye in CSAT paper and comfortably score 100+ even in the most difficult question paper that UPSC can give you in CSP-2021. Your peace of mind after every step of this exam is very important for us.
Looking forward to your enthusiastic participation (both in sending us questions and solving them on daily basis on this portal).
Quiz-summary
0 of 5 questions completed
Questions:
- 1
- 2
- 3
- 4
- 5
Information
Best of Luck! 🙂
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 5 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- Answered
- Review
-
Question 1 of 5
1. Question
Based on the above passage, the following assumptions have been made:
- Markets alone cannot guarantee equitable outcomes without regulatory intervention.
- State regulation and market mechanisms must coexist to balance efficiency with social justice.
Select the correct answer using the code given below:
Correct
Solution: (c)
Explanation:
• Statement 1 is valid: The passage highlights how markets fail to address inequality, public goods, and sustainability.
• Statement 2 is valid: The concluding line explicitly notes the tension between market faith and regulatory need, implying coexistence is necessary.
Thus, both assumptions logically follow, making (c) correct.Incorrect
Solution: (c)
Explanation:
• Statement 1 is valid: The passage highlights how markets fail to address inequality, public goods, and sustainability.
• Statement 2 is valid: The concluding line explicitly notes the tension between market faith and regulatory need, implying coexistence is necessary.
Thus, both assumptions logically follow, making (c) correct. -
Question 2 of 5
2. Question
If 12 men and 16 boys can finish a work in 5 days, while 25 men and 50 boys can finish it in 2 days, then the time taken by 15 men and 20 boys will be:
Correct
Answer – B
Solution: Given that,Let 1 man’s 1-day work = mmm and 1 boy’s 1-day work = bbb.
(12m + 16b) × 5 = 1 ⇒ 12m + 16b = 1/5 …(i)
(25m + 50b) × 2 = 1 ⇒ 25m + 50b = 1/2 …(ii)From (i): 3m + 4b = 1/20 ⇒ m = 1/60 − (4/3)b
Substitute in (ii):
25(1/60 − 4b/3) + 50b = 1/2
5/12 − 100b/3 + 50b = 1/2
⇒ 5/12 + (−100/3 + 150/3)b = 1/2
⇒ 5/12 + (50/3)b = 1/2
⇒ (50/3)b = 1/2 − 5/12 = 1/12
⇒ b = 1/200Then 3m + 4(1/200) = 1/20 ⇒ 3m = 1/20 − 1/50 = 3/100 ⇒ m = 1/100
Now, (15m + 20b) = 15/100 + 20/200 = 0.25 = 1/4
Time taken = 1 ÷ (1/4) = 4 daysHence option (b) is correct
Incorrect
Answer – B
Solution: Given that,Let 1 man’s 1-day work = mmm and 1 boy’s 1-day work = bbb.
(12m + 16b) × 5 = 1 ⇒ 12m + 16b = 1/5 …(i)
(25m + 50b) × 2 = 1 ⇒ 25m + 50b = 1/2 …(ii)From (i): 3m + 4b = 1/20 ⇒ m = 1/60 − (4/3)b
Substitute in (ii):
25(1/60 − 4b/3) + 50b = 1/2
5/12 − 100b/3 + 50b = 1/2
⇒ 5/12 + (−100/3 + 150/3)b = 1/2
⇒ 5/12 + (50/3)b = 1/2
⇒ (50/3)b = 1/2 − 5/12 = 1/12
⇒ b = 1/200Then 3m + 4(1/200) = 1/20 ⇒ 3m = 1/20 − 1/50 = 3/100 ⇒ m = 1/100
Now, (15m + 20b) = 15/100 + 20/200 = 0.25 = 1/4
Time taken = 1 ÷ (1/4) = 4 daysHence option (b) is correct
-
Question 3 of 5
3. Question
8 men can complete a work in 8 days and 16 boys take 16 days to complete the work. How many days will 4 men and 16 boys take to complete the work?
Correct
Answer – C
Solution: Given,⇒ 8 men finish in 8 days ⇒ 1 man’s 1-day work = 1/(8×8) = 1/64
⇒ 16 boys finish in 16 days ⇒ 1 boy’s 1-day work = 1/(16×16) = 1/256(4 men + 16 boys)’s 1-day work = 4×(1/64) + 16×(1/256)
= 1/16 + 1/16 = 1/8Time taken = 1 ÷ (1/8) = 8 days
Hence option (c) 8 is correct
Incorrect
Answer – C
Solution: Given,⇒ 8 men finish in 8 days ⇒ 1 man’s 1-day work = 1/(8×8) = 1/64
⇒ 16 boys finish in 16 days ⇒ 1 boy’s 1-day work = 1/(16×16) = 1/256(4 men + 16 boys)’s 1-day work = 4×(1/64) + 16×(1/256)
= 1/16 + 1/16 = 1/8Time taken = 1 ÷ (1/8) = 8 days
Hence option (c) 8 is correct
-
Question 4 of 5
4. Question
A certain number of men can complete a piece of work in 12k days. By what percent should the number of men be increased so that the work can be completed in 9k days?
Correct
Answer – C
Solution:Given that,
Work can be completed in 12k days.
Let number of men be M1 and M2
Days are D1 = 12k and D2 = 9k
M1 × D1 = M2 × D2
M1 × 12k = M2 × 9k
M2 = (M1 × 12k)/9k = (4/3)M1
% change = {(4/3)M1 − M1}/M1 × 100 = (1/3) × 100 = 33⅓%
Thus 33⅓% more men are required.
Hence option (c) is correct
Incorrect
Answer – C
Solution:Given that,
Work can be completed in 12k days.
Let number of men be M1 and M2
Days are D1 = 12k and D2 = 9k
M1 × D1 = M2 × D2
M1 × 12k = M2 × 9k
M2 = (M1 × 12k)/9k = (4/3)M1
% change = {(4/3)M1 − M1}/M1 × 100 = (1/3) × 100 = 33⅓%
Thus 33⅓% more men are required.
Hence option (c) is correct
-
Question 5 of 5
5. Question
If a runner moves at 12 km/hr instead of 8 km/hr, he would have covered 20 km more. The actual distance covered by him is:
Correct
Answer – C
Solution:Given that,
At 12 km/hr instead of 8 km/hr, extra distance = 20 km.
Let the common time be t hours.
12t = 8t + 20 ⇒ 4t = 20 ⇒ t = 5 hours
Actual distance = 8 × t = 8 × 5 = 40 km
Hence option (c) is correct
Incorrect
Answer – C
Solution:Given that,
At 12 km/hr instead of 8 km/hr, extra distance = 20 km.
Let the common time be t hours.
12t = 8t + 20 ⇒ 4t = 20 ⇒ t = 5 hours
Actual distance = 8 × t = 8 × 5 = 40 km
Hence option (c) is correct
