UPPSC Prelims Solution

Q. With reference to ‘Ecosystem’, which of the following statements is/are correct?

Q. With reference to ‘Ecosystem’, which of the following statements is/are correct?

1. Green plants in terrestrial ecosystem capture about 1% of energy of the sunlight that falls on their leaves.
2. Around 10% of organic matter reaches to the next higher level of consumers.
Select the correct answer from the code given below :
a) Only 2
b) Neither 1 nor 2
c) Both 1 and 2
d) Only 1
Correct Answer: c) Both 1 and 2

Question from UPPSC Prelims 2025

Explanation:

Statement 1: Correct. In terrestrial ecosystems, green plants convert only a very small fraction of the sunlight incident on their leaves into chemical energy—about 1% on average. This is a standard NCERT fact and reflects low photosynthetic (ecosystem-level) conversion efficiency.

Statement 2: Correct. This reflects Lindeman’s 10% law: roughly 10% of the energy (embodied in organic matter/biomass) at one trophic level is transferred to the next higher level of consumers; the remainder is lost via respiration, heat, and waste. While exact efficiencies vary, “around 10%” is the accepted rule-of-thumb.

Therefore, both statements are correct.

Q. With reference to ‘Ecosystem’, which of the following statements is/are correct? Read More »

Q. Match List – I with List – II and choose the correct answer by using the code given below the lists. List – I (Coal Field)

Q. Match List – I with List – II and choose the correct answer by using the code given below the lists.

List – I (Coal Field)
A. Appalachian
B. Lancashire
C. Ruhr
D. Kuzbass
List – II (Country)
1. England
2. Germany
3. Russia
4. United States of America
a) A-4, B-1, C-2, D-3
b) A-1, B-4, C-3, D-2
c) A-1, B-4, C-2, D-3
d) A-4, B-1, C-3, D-2
Correct Answer: a) A-4, B-1, C-2, D-3

Question from UPPSC Prelims 2025

Explanation:

Correct matching:
A. Appalachian → United States of America (4): The Appalachian coalfield spans the eastern U.S., from Pennsylvania to Alabama.
B. Lancashire → England (1): The Lancashire coalfield is in northwest England (UK).
C. Ruhr → Germany (2): The Ruhr region in North Rhine–Westphalia is Germany’s classic coal and industrial area.
D. Kuzbass → Russia (3): Kuzbass (Kuznetsk Basin) is a major coal basin in southwestern Siberia, Russia.

Q. Match List – I with List – II and choose the correct answer by using the code given below the lists. List – I (Coal Field) Read More »

Q. Assertion (A): Babur wrote Tuzk-e-Babri in Chagatai Turki. Reason (R) : Turki was the official language of the Mughal Court.

Q. Assertion (A): Babur wrote Tuzk-e-Babri in Chagatai Turki.
Reason (R) : Turki was the official language of the Mughal Court.

Select the correct answer from the code given below:
a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
b) (A) is false, but (R) is true
c) (A) is true, but (R) is false
d) Both (A) and (R) are true and (R) is the correct explanation of (A)
Correct Answer: c) (A) is true, but (R) is false

Question from UPPSC Prelims 2025

Explanation:

Assertion (A) is true: Babur’s memoirs, the Tuzuk-i-Baburi (Baburnama), were originally written in Chagatai Turki, his mother tongue; they were later translated into Persian in Akbar’s reign.
Reason (R) is false: The official language of the Mughal court and administration was Persian, not Turki. Although Babur personally used Chagatai Turki, Persian functioned as the court/administrative language throughout the Mughal period (formally continuing until replaced by the British in 1837).
Hence, (A) is true but (R) is false. Therefore, option 3 is correct.

Q. Assertion (A): Babur wrote Tuzk-e-Babri in Chagatai Turki. Reason (R) : Turki was the official language of the Mughal Court. Read More »

Assertion (A): India is the second largest mobile gaming market in the world.

Q. Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).

Assertion (A): India is the second largest mobile gaming market in the world.
Reason (R): There are more than 950 million internet users in India.

Select the correct answer from the code given below :
a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
b) (A) is false, but (R) is true
c) (A) is true, but (R) is false
d) Both (A) and (R) are true and (R) is the correct explanation of (A)
Correct Answer: c) (A) is true, but (R) is false

Question from UPPSC Prelims 2025

Explanation:

Assertion (A): True. India ranks among the very top globally in mobile gaming by user base; industry reports (e.g., Lumikai/Google, 2023) place India as the second-largest gaming market by number of gamers (well over 500 million), the overwhelming majority of whom are on mobile. Only China has more gamers.

Reason (R): False. India does not yet have more than 950 million internet users according IE, According to PIB – True

Assertion (A): India is the second largest mobile gaming market in the world. Read More »

Assertion (A): The interior part of Australia is desert and semi-desert.

Q. Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).

Assertion (A): The interior part of Australia is desert and semi-desert.
Reason (R): Northern Australia is situated in the temperate zone.

Select the correct answer from the code given below:
a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
b) (A) is false, but (R) is true
c) (A) is true, but (R) is false
d) Both (A) and (R) are true and (R) is the correct explanation of (A)
Correct Answer: c) (A) is true, but (R) is false

Question from UPPSC Prelims 2025

Explanation:

Assertion (A) is true: Much of interior Australia (the Outback) is arid or semi-arid, including the Great Victoria, Great Sandy, Gibson, and Simpson Deserts. This is due to the subtropical high-pressure belt (descending dry air around 25–35°S), continentality and distance from coasts, rain shadow from the Great Dividing Range in the east, and the cool West Australian Current reducing moisture along the west coast.

Reason (R) is false: Northern Australia lies largely north of the Tropic of Capricorn (~23.5°S) and is in the tropical zone with a tropical monsoon climate. The temperate zone mainly applies to southern Australia and Tasmania.

Therefore, (A) is true but (R) is false. Hence, Option 3 is correct.

Assertion (A): The interior part of Australia is desert and semi-desert. Read More »

Q. What will be the next item in the series 7,11, 19, 35,67——-?

Q. What will be the next item in the series 7,11, 19, 35,67,___?

(A) 121
(B) 133
(C) 99
(D) 131

Question from UPPSC Prelims CSAT 2024

Correct Answer: D) 131

Explanation:

To determine the next number in the series 7, 11, 19, 35, 67, let’s analyze the pattern of differences between consecutive terms:

1. 11 – 7 = 4
2. 19 – 11 = 8
3. 35 – 19 = 16
4. 67 – 35 = 32

Observing the Differences:
– The differences are: 4, 8, 16, 32
– Each difference is doubling the previous one:
– 4 x 2 = 8
– 8 x 2 = 16
– 16 x 2 = 32

Predicting the Next Difference:
– Following the pattern, the next difference should be 32 x 2 = 64.

Calculating the Next Term:
– Add this difference to the last term in the series:
– 67 + 64 = 131

Answer: D) 131

Q. What will be the next item in the series 7,11, 19, 35,67——-? Read More »

Q. ________ allows several people to use software at the same time to create documents, keep track of projects.

Q. ________ allows several people to use software at the same time to create documents, keep track of projects.

(A) Groupware
(B) Network
(C) Software
(D) E-mail

Question from UPPSC Prelims CSAT 2024

Correct Answer: (A) Groupware

Explanation:

Groupware is a type of software designed to help multiple users collaborate and work together on tasks or projects in real-time or asynchronously. It allows several people to create documents, manage projects, share information, and communicate effectively. Examples of groupware include tools like Microsoft Teams, Slack, and Google Workspace.

– (B) Network refers to the infrastructure that connects computers and devices, enabling communication and data sharing, but it is not specifically designed for collaborative work.

– (C) Software is a general term for programs and applications, but it does not specifically refer to collaborative tools.

– (D) E-mail is a communication tool, but it is not designed for real-time collaboration or project management.

Thus, the correct answer is Groupware (A).

Q. ________ allows several people to use software at the same time to create documents, keep track of projects. Read More »

Q. The process of problem solving where the problem has only one single answer is

Q. The process of problem solving where the problem has only one single answer is

(A) Divergent thinking
(B) Trial and error
(C) Insight
(D) Convergent thinking

Question from UPPSC Prelims CSAT 2024

Correct Answer: (D) Convergent thinking

Explanation:

Convergent thinking is a cognitive process in which a person focuses on finding a single, correct solution to a problem. It involves logical reasoning, critical thinking, and the application of existing knowledge to arrive at the one correct answer. This type of thinking is often used in situations where there is a clear and definitive solution, such as solving mathematical problems or answering multiple-choice questions.

– (A) Divergent thinking: This involves generating multiple solutions or ideas for a problem, often associated with creativity and brainstorming. It is the opposite of convergent thinking.

– (B) Trial and error: This is a method of problem-solving that involves trying different solutions until the correct one is found. It is not focused on a single, logical path to the solution.

– (C) Insight: This refers to a sudden realization or “aha moment” where the solution to a problem becomes clear, often without a step-by-step process.

Thus, the correct answer is (D) Convergent thinking.

Q. The process of problem solving where the problem has only one single answer is Read More »

Q. Which of the following is a characteristic of a good decision?

Q. Which of the following is a characteristic of a good decision?

(A) It is based on intuition
(B) It ignores stakeholders’ interest
(C) It is feasible and achievable
(D) It is made quickly

Question from UPPSC Prelims CSAT 2024

Correct Answer: (C) It is feasible and achievable

Explanation: A good decision is one that is practical, realistic, and can be implemented effectively. Let’s analyze the options:

– (A) It is based on intuition: While intuition can sometimes play a role in decision-making, relying solely on intuition without considering facts, data, and analysis is not a characteristic of a good decision. Good decisions are typically based on a combination of logic, evidence, and sometimes intuition.

– (B) It ignores stakeholders’ interest: Ignoring stakeholders’ interests is a poor practice in decision-making. A good decision takes into account the needs and concerns of all relevant stakeholders to ensure alignment and support.

– (C) It is feasible and achievable: This is the correct answer. A good decision must be realistic and capable of being implemented successfully. If a decision is not feasible or achievable, it cannot lead to effective outcomes.

– (D) It is made quickly: While timeliness is important, making a decision quickly does not necessarily mean it is a good decision. Rushed decisions can often lead to errors or overlook critical factors.

Thus, the characteristic of a good decision is that it is feasible and achievable.

Q. Which of the following is a characteristic of a good decision? Read More »

Q. If in a non-leap year, is Tuesday on 28th February, then what day will be on 28th March of that year?

Q. If in a non-leap year, is Tuesday on 28th February, then what day will be on 28th March of that year?

(A) Monday
(B) Tuesday
(C) Sunday
(D) None of the above

Question from UPPSC Prelims CSAT 2024

Correct Answer: D) None of the above

Explanation:

To determine the day on 28th March given that 28th February is a Tuesday in a non-leap year, follow these steps:

1. Understand the Calendar Structure:
– February has 28 days in a non-leap year.
– Therefore, 1st March will be the day after 28th February, which is Wednesday.

2. Calculate the Day for 28th March:
– March has 31 days.
– 28th March is exactly 28 days after 1st March.
– Since 28 days constitute exactly 4 weeks, the day remains the same as 1st March.
– Therefore, 28th March will also be a Wednesday.

Answer: D) None of the above

Q. If in a non-leap year, is Tuesday on 28th February, then what day will be on 28th March of that year? Read More »