UPSC Insta–DART (Daily Aptitude and Reasoning Test) 22 Oct 2025

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).

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• Question 1 of 5 1. Question What percent of kerosene must be mixed with petrol so as to gain 33⅓% by selling the mixture at the cost price of petrol? a) 20% b) 25% c) 30% d) 33⅓% Correct Answer: D Explanation Let cost price of 1 litre petrol = ₹1. So, cost of 100 litres petrol = ₹100. Now, x litres kerosene is mixed with 100 litres petrol. Mixture = 100 + x litres. Selling price at petrol’s cost rate = 100 + x. For 33⅓% profit, SP = 100 × 4/3 = 133⅓. So, 100 + x = 133⅓ ⇒ x = 33⅓. Thus, % of kerosene = (33⅓/100) × 100 = 33⅓%. Hence, option d is correct. Incorrect Answer: D Explanation Let cost price of 1 litre petrol = ₹1. So, cost of 100 litres petrol = ₹100. Now, x litres kerosene is mixed with 100 litres petrol. Mixture = 100 + x litres. Selling price at petrol’s cost rate = 100 + x. For 33⅓% profit, SP = 100 × 4/3 = 133⅓. So, 100 + x = 133⅓ ⇒ x = 33⅓. Thus, % of kerosene = (33⅓/100) × 100 = 33⅓%. Hence, option d is correct.

#### 1. Question

What percent of kerosene must be mixed with petrol so as to gain 33⅓% by selling the mixture at the cost price of petrol?

Answer: D Explanation Let cost price of 1 litre petrol = ₹1. So, cost of 100 litres petrol = ₹100. Now, x litres kerosene is mixed with 100 litres petrol. Mixture = 100 + x litres. Selling price at petrol’s cost rate = 100 + x. For 33⅓% profit, SP = 100 × 4/3 = 133⅓. So, 100 + x = 133⅓ ⇒ x = 33⅓. Thus, % of kerosene = (33⅓/100) × 100 = 33⅓%. Hence, option d is correct.

• Question 2 of 5 2. Question A question is given followed by two statements: Question: What is the simple interest on the sum? Statement I. The principal is ₹4,000, rate of interest 10% per annum, time 3 years. Statement II. The interest is calculated at ₹400 per year. Which one of the following is correct with respect to the above statements? (a) If statement I alone is sufficient to answer the question. (b) If statement II alone is sufficient to answer the question. (c) If both the statements I & II together are not sufficient to answer the question. (d) If both the statements I & II together are sufficient to answer the question. Correct Answer – A Statement I alone: SI = (P×R×T)/100 = (4000×10×3)/100 = ₹1,200. Sufficient. Statement II alone: SI = 400 × 3 = ₹1,200. But rate and principal are not known, only interest per year given. Yet total SI can still be calculated as ₹1,200. Not enough to confirm principal. So not sufficient. Hence only Statement I is sufficient. Correct option (a). Incorrect Answer – A Statement I alone: SI = (P×R×T)/100 = (4000×10×3)/100 = ₹1,200. Sufficient. Statement II alone: SI = 400 × 3 = ₹1,200. But rate and principal are not known, only interest per year given. Yet total SI can still be calculated as ₹1,200. Not enough to confirm principal. So not sufficient. Hence only Statement I is sufficient. Correct option (a).

#### 2. Question

A question is given followed by two statements: Question: What is the simple interest on the sum? Statement I. The principal is ₹4,000, rate of interest 10% per annum, time 3 years. Statement II. The interest is calculated at ₹400 per year. Which one of the following is correct with respect to the above statements?

• (a) If statement I alone is sufficient to answer the question.

• (b) If statement II alone is sufficient to answer the question.

• (c) If both the statements I & II together are not sufficient to answer the question.

• (d) If both the statements I & II together are sufficient to answer the question.

Answer – A Statement I alone: SI = (P×R×T)/100 = (4000×10×3)/100 = ₹1,200. Sufficient. Statement II alone: SI = 400 × 3 = ₹1,200. But rate and principal are not known, only interest per year given. Yet total SI can still be calculated as ₹1,200. Not enough to confirm principal. So not sufficient. Hence only Statement I is sufficient. Correct option (a).

• Question 3 of 5 3. Question The average of nine numbers is 72, that of the first four numbers is 68 and the next four is 73. The tenth number is 12 less than the ninth number. Then, consider the following statements: Statement I: The ninth number is exactly divisible by 7 Statement II: The tenth number is exactly divisible by 8 Statement III: The sum of ninth and tenth number is exactly divisible by 6 How many of the above mentioned statement/s is/are correct ? (a) One only (b) Two only (c) All three (d) None Correct Answer: C Solution: Sum of 9 numbers = 72 × 9 = 648 Sum of first 4 numbers = 68 × 4 = 272 Sum of next 4 numbers = 73 × 4 = 292 9th number = 648 − (272 + 292) = 84 Given: 10th is 12 less than 9th ⇒ 10th number = 84 − 12 = 72 Statement I: 84/7 = 12 ⇒ Correct Statement II: 72/8 = 9 ⇒ Correct Statement III: 84 + 72 = 156; 156/6 = 26 ⇒ Correct Hence, all three statements are correct → (c) All three. Incorrect Answer: C Solution: Sum of 9 numbers = 72 × 9 = 648 Sum of first 4 numbers = 68 × 4 = 272 Sum of next 4 numbers = 73 × 4 = 292 9th number = 648 − (272 + 292) = 84 Given: 10th is 12 less than 9th ⇒ 10th number = 84 − 12 = 72 Statement I: 84/7 = 12 ⇒ Correct Statement II: 72/8 = 9 ⇒ Correct Statement III: 84 + 72 = 156; 156/6 = 26 ⇒ Correct Hence, all three statements are correct → (c) All three.

#### 3. Question

The average of nine numbers is 72, that of the first four numbers is 68 and the next four is 73. The tenth number is 12 less than the ninth number. Then, consider the following statements: Statement I: The ninth number is exactly divisible by 7 Statement II: The tenth number is exactly divisible by 8 Statement III: The sum of ninth and tenth number is exactly divisible by 6 How many of the above mentioned statement/s is/are correct ?

• (a) One only

• (b) Two only

• (c) All three

Answer: C Solution: Sum of 9 numbers = 72 × 9 = 648 Sum of first 4 numbers = 68 × 4 = 272 Sum of next 4 numbers = 73 × 4 = 292 9th number = 648 − (272 + 292) = 84 Given: 10th is 12 less than 9th ⇒ 10th number = 84 − 12 = 72 Statement I: 84/7 = 12 ⇒ Correct Statement II: 72/8 = 9 ⇒ Correct Statement III: 84 + 72 = 156; 156/6 = 26 ⇒ Correct Hence, all three statements are correct → (c) All three.

• Question 4 of 5 4. Question India’s development trajectory stands at a crossroads: on one side lies the need to lift millions out of poverty through rapid industrial growth, and on the other, the pressing obligation to safeguard ecosystems threatened by climate change. Large-scale infrastructure projects, while boosting GDP, often lead to deforestation, loss of biodiversity, and displacement of vulnerable communities. Conversely, an overemphasis on conservation without economic alternatives risks slowing down social mobility. The challenge, therefore, is not to choose between growth and environment, but to integrate the two through innovative policies, green technologies, and participatory governance. Which one of the following statements best reflects the most logical, rational and pragmatic message conveyed by the author of the passage? (a) Economic growth must always take precedence over environmental concerns in a developing country like India. (b) Environmental protection is more important than economic progress when dealing with climate change. (c) India’s path forward lies in harmonizing development with ecological sustainability through innovation and inclusive governance. (d) India should limit industrial growth to ensure conservation of biodiversity and traditional livelihoods. Correct Answer: (c) Explanation: Option (a) is incorrect: The passage does not argue for growth at the cost of the environment. It critiques unchecked infrastructure projects. Option (b) is incorrect: The author does not advocate prioritizing the environment over growth, but instead balancing both. Option (c) is correct: The passage explicitly states that the challenge is “not to choose between growth and environment, but to integrate the two through innovative policies, green technologies, and participatory governance.” This reflects harmonization, not exclusivity. Option (d) is incorrect: The author does not recommend limiting industrial growth but reforming it to be sustainable. Thus, the most pragmatic message is option (c). Incorrect Answer: (c) Explanation: Option (a) is incorrect: The passage does not argue for growth at the cost of the environment. It critiques unchecked infrastructure projects. Option (b) is incorrect: The author does not advocate prioritizing the environment over growth, but instead balancing both. Option (c) is correct: The passage explicitly states that the challenge is “not to choose between growth and environment, but to integrate the two through innovative policies, green technologies, and participatory governance.” This reflects harmonization, not exclusivity. Option (d) is incorrect: The author does not recommend limiting industrial growth but reforming it to be sustainable. Thus, the most pragmatic message is option (c).

#### 4. Question

India’s development trajectory stands at a crossroads: on one side lies the need to lift millions out of poverty through rapid industrial growth, and on the other, the pressing obligation to safeguard ecosystems threatened by climate change. Large-scale infrastructure projects, while boosting GDP, often lead to deforestation, loss of biodiversity, and displacement of vulnerable communities. Conversely, an overemphasis on conservation without economic alternatives risks slowing down social mobility. The challenge, therefore, is not to choose between growth and environment, but to integrate the two through innovative policies, green technologies, and participatory governance.

Which one of the following statements best reflects the most logical, rational and pragmatic message conveyed by the author of the passage?

• (a) Economic growth must always take precedence over environmental concerns in a developing country like India.

• (b) Environmental protection is more important than economic progress when dealing with climate change.

• (c) India’s path forward lies in harmonizing development with ecological sustainability through innovation and inclusive governance.

• (d) India should limit industrial growth to ensure conservation of biodiversity and traditional livelihoods.

Answer: (c)

Explanation:

• Option (a) is incorrect: The passage does not argue for growth at the cost of the environment. It critiques unchecked infrastructure projects.

• Option (b) is incorrect: The author does not advocate prioritizing the environment over growth, but instead balancing both.

• Option (c) is correct: The passage explicitly states that the challenge is “not to choose between growth and environment, but to integrate the two through innovative policies, green technologies, and participatory governance.” This reflects harmonization, not exclusivity.

• Option (d) is incorrect: The author does not recommend limiting industrial growth but reforming it to be sustainable.

Thus, the most pragmatic message is option (c).

Answer: (c)

Explanation:

• Option (a) is incorrect: The passage does not argue for growth at the cost of the environment. It critiques unchecked infrastructure projects.

• Option (b) is incorrect: The author does not advocate prioritizing the environment over growth, but instead balancing both.

• Option (d) is incorrect: The author does not recommend limiting industrial growth but reforming it to be sustainable.

Thus, the most pragmatic message is option (c).

• Question 5 of 5 5. Question With reference to the passage, the following assumptions have been made: I. Pursuing development and environmental protection as separate goals will lead to long-term conflicts. II. Innovative technologies and inclusive policies can provide solutions that reconcile economic growth with ecological sustainability. Which of the above assumptions is/are valid? (a) I only (b) II only (c) Both I and II (d) Neither I nor II Correct Answer: (c) Explanation: Assumption I is valid: The passage notes that large projects cause environmental harm, while overemphasis on conservation without economic options hampers growth. This indicates that treating the two as separate or opposing goals leads to conflict. Assumption II is valid: The passage concludes that the solution lies in “innovative policies, green technologies, and participatory governance.” This directly supports the assumption that technology and inclusive policies can reconcile the two goals. Therefore, both assumptions are valid, and the correct answer is (c). Incorrect Answer: (c) Explanation: Assumption I is valid: The passage notes that large projects cause environmental harm, while overemphasis on conservation without economic options hampers growth. This indicates that treating the two as separate or opposing goals leads to conflict. Assumption II is valid: The passage concludes that the solution lies in “innovative policies, green technologies, and participatory governance.” This directly supports the assumption that technology and inclusive policies can reconcile the two goals. Therefore, both assumptions are valid, and the correct answer is (c).

#### 5. Question

With reference to the passage, the following assumptions have been made: I. Pursuing development and environmental protection as separate goals will lead to long-term conflicts. II. Innovative technologies and inclusive policies can provide solutions that reconcile economic growth with ecological sustainability.

Which of the above assumptions is/are valid?

• (a) I only

• (b) II only

• (c) Both I and II

• (d) Neither I nor II

Answer: (c)

Explanation:

• Assumption I is valid: The passage notes that large projects cause environmental harm, while overemphasis on conservation without economic options hampers growth. This indicates that treating the two as separate or opposing goals leads to conflict.

• Assumption II is valid: The passage concludes that the solution lies in “innovative policies, green technologies, and participatory governance.” This directly supports the assumption that technology and inclusive policies can reconcile the two goals.

Therefore, both assumptions are valid, and the correct answer is (c).

Answer: (c)

Explanation:

Therefore, both assumptions are valid, and the correct answer is (c).

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