SINDH PUBLIC SERVICE COMMISSION, HYDERABAD
COMBINED COMPETITIVE EXAMINATION-2024
GENERAL SCIENCE & ABILITY
Wednesday, 24th December, 2025
Maximum Marks: 100
Time: 09:00 am to 12:00 Noon
NOTE: ATTEMPT FIVE QUESTIONS BY SELECTING THREE QUESTIONS FROM SECTION-I AND TWO QUESTIONS FROM SECTION-II. ALL QUESTIONS CARRY EQUAL MARKS.
| Marks | Question No. | SECTION-I |
|---|---|---|
| 05 | 01 | i-Describe the significance of the light year as a unit of measurement in astronomy. |
| 05 | ii-What is the role of lipids in cell membranes and energy storage? | |
| 05 | iii-Describe the major layers of Earth’s atmosphere and their specific characteristics. | |
| 05 | iv-How does cloud computing impact the storage and processing of data? | |
| 05 | 02 | i-Give scientific explanations of the following: How does the Earth’s rotation lead to the phenomenon of the Coriolis effect? |
| 05 | ii-How does genetic recombination during meiosis contribute to genetic diversity? | |
| 05 | iii-How does the Second Law of Thermodynamics apply to biological systems, particularly in terms of energy transfer and metabolism? | |
| 05 | iv-How do Newton’s Laws of motion explain rocket thrust in space? | |
| 10 | 03 | i-How does photosynthesis convert light energy into chemical energy in plants? |
| 05 | ii-What role do plant hormones like auxins and gibberellins play in growth and development? | |
| 05 | iii-What is the role of xylem and phloem in plant transport systems? | |
| 10 | 04 | i-Explain the relationship between human activity and the acceleration of global warming. |
| 05 | ii-What are the differences between artificial intelligence and machine learning? | |
| 05 | iii-Describe the fundamentals of wireless communication and its application in modern technology. | |
| 10 | 05 | i-What is meant by the term “Bioavailability of nutrients”, and name one factor that can affect it. |
| 05 | ii-Differentiate between food additives, preservatives, and antioxidants with one example of each. | |
| 05 | iii-What is food adulteration? | |
| 10 | 06 | i-What is the difference between data and information? |
| 05 | ii-What is the function of an IP address in computer networking? | |
| 05 | iii-What is the basic difference between satellite communication and fiber optic communication? |
SECTION-II
| Marks | Question No. | |
|---|---|---|
| 10 | 07 | i-In a family of 6 members: “A” is the mother of “B”, “B” is the daughter of “C”, “C” is the father of “D”, “D” is the brother of “E”. How is “E” related to “A”? |
| 10 | ii-In a class of 50 students, 30 passed Math, 25 passed Science, and 10 passed both subjects. How many students passed only Math or only Science? | |
| 10 | 08 | i-If the average of 5 numbers is 20, what is their total sum? |
| 05 | ii-A bag contains 3 red balls and 2 blue balls. If one ball is picked at random, what is the probability that it is red? | |
| 05 | iii-If the ratio of boys to girls in a class is 3:2 and there are 30 students in total, how many boys are there? | |
| 20 | 09 | i-Why do Astronauts experience weightlessness in space even though gravity is still acting on them? |
| 20 | 10 | i-Please describe a real or hypothetical situation in which a civil servant’s strict adherence to rules may conflict with public interest in the given situation. How should he approach the situation, and what principles should guide him? |