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
Consider the following question and statements
Question: What is the current age of the Father?
Statement I: The ratio of the present ages of the Father and the Son is 7 : 2.
Statement II: Five years ago, the ratio of their ages was 6 : 1.Options:
Correct
Answer: (c)
Explanation
Using Statement I alone:
Let the present ages of Father and Son be 7x and 2x.
The value of x is not known, so the Father’s exact age cannot be determined.
Hence, Statement I alone is not sufficient.Using Statement II alone:
Let the ages five years ago be 6y and y.
Then present ages would be (6y + 5) and (y + 5).
Again, the exact values cannot be found without another relation.
Hence, Statement II alone is not sufficient.Using Statements I and II together:
From Statement I, present ages are 7x and 2x.
So, five years ago, their ages were (7x − 5) and (2x − 5).According to Statement II:
(7x − 5) : (2x − 5) = 6 : 1So,
7x − 5 = 6(2x − 5)
7x − 5 = 12x − 30
5x = 25
x = 5Father’s present age = 7x = 35 years.
Thus, both statements together are sufficient to find the Father’s current age.
Incorrect
Answer: (c)
Explanation
Using Statement I alone:
Let the present ages of Father and Son be 7x and 2x.
The value of x is not known, so the Father’s exact age cannot be determined.
Hence, Statement I alone is not sufficient.Using Statement II alone:
Let the ages five years ago be 6y and y.
Then present ages would be (6y + 5) and (y + 5).
Again, the exact values cannot be found without another relation.
Hence, Statement II alone is not sufficient.Using Statements I and II together:
From Statement I, present ages are 7x and 2x.
So, five years ago, their ages were (7x − 5) and (2x − 5).According to Statement II:
(7x − 5) : (2x − 5) = 6 : 1So,
7x − 5 = 6(2x − 5)
7x − 5 = 12x − 30
5x = 25
x = 5Father’s present age = 7x = 35 years.
Thus, both statements together are sufficient to find the Father’s current age.
-
Question 2 of 5
2. Question
The ratio of the surface areas of two spheres is 9 : 16. These two spheres are melted and recast into a single solid cylinder whose height is equal to the sum of the radii of the two spheres.
What is the ratio of the volume of the first sphere to the volume of the newly formed cylinder?Correct
Incorrect
-
Question 3 of 5
3. Question
The ratio of land to water on the entire Earth is 3 : 7. In the Northern Hemisphere, the ratio of land to water is 1 : 2. Find the ratio of land to water in the Southern Hemisphere.
Correct
Answer: (d)
Explanation:
Let total surface area = 10 units.
Land = 3 units, water = 7 units.Each hemisphere area = 5 units.
Northern Hemisphere ratio = 1 : 2
Total parts = 3 parts = 5 units
One part = 5/3 unitsNorthern Hemisphere:
Land = 5/3
Water = 10/3Southern Hemisphere:
Land = 3 − 5/3 = 4/3
Water = 7 − 10/3 = 11/3So, ratio:
(4/3) : (11/3) = 4 : 11Incorrect
Answer: (d)
Explanation:
Let total surface area = 10 units.
Land = 3 units, water = 7 units.Each hemisphere area = 5 units.
Northern Hemisphere ratio = 1 : 2
Total parts = 3 parts = 5 units
One part = 5/3 unitsNorthern Hemisphere:
Land = 5/3
Water = 10/3Southern Hemisphere:
Land = 3 − 5/3 = 4/3
Water = 7 − 10/3 = 11/3So, ratio:
(4/3) : (11/3) = 4 : 11 -
Question 4 of 5
4. Question
A total of 2520 tokens are divided among A, B and C. From their shares:
- A gives away 20 tokens
- B gives away 40 tokens
- C gives away 60 tokens
After this, the ratio of tokens left with them becomes 9 : 8 : 7. How many tokens did A originally receive?
Correct
Incorrect
-
Question 5 of 5
5. Question
The rapid growth of digital platforms has led to an unprecedented accumulation of user-generated data. Every online interaction—search queries, location updates, browsing patterns, and social media activity—contributes to an individual’s digital footprint. These data trails are routinely processed by algorithms to personalise services, assess creditworthiness, and target advertisements.
From a systems perspective, digital footprints enhance efficiency by reducing information asymmetry between service providers and users. However, they also increase exposure to profiling, behavioural manipulation, and data breaches. Regulatory frameworks and corporate governance mechanisms have attempted to address these risks, but enforcement remains uneven across jurisdictions. As data-driven decision-making expands, the management of digital footprints is becoming a central issue in digital governance.
Which one of the following statements best reflects the corollary to the above passage?
Correct
Answer: (c)
Explanation:
Option (c) is correct: The passage balances efficiency gains with risks such as profiling and breaches, and highlights governance gaps. It implies that growing data use creates regulatory and security challenges.
Option (a) is incomplete: Advertising is only one aspect.
Option (b) ignores risks.
Option (d) contradicts the reference to uneven enforcement.Incorrect
Answer: (c)
Explanation:
Option (c) is correct: The passage balances efficiency gains with risks such as profiling and breaches, and highlights governance gaps. It implies that growing data use creates regulatory and security challenges.
Option (a) is incomplete: Advertising is only one aspect.
Option (b) ignores risks.
Option (d) contradicts the reference to uneven enforcement.
