July 2024 Edition
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July 2024 Current Affairs MCQs & Solutions
Top national & international current affairs questions for CSS, PMS, FPSC, PPSC, and NTS screening tests.
#7381
Djibouti is strategically located at the mouth of which sea? (CSS-2024)
(a) Mediterranean Sea
(b) South China Sea
(c) Red Sea
(d) None of these
Explanation: Duplicate of Q105; retained for completeness.
#7382
The Horn of Africa (HoA) is located in which part of the African continent? (CSS2024)
(a) Eastern Africa
(b) Western Africa
(c) Northern Africa
(d) None of these
Explanation: Duplicate of Q106; retained for completeness.
#7383
What is the output voltage of a step-up transformer? (CSS-2024)
(a) The output voltage is greater than the input voltage
(b) The output voltage is equal to the input voltage
(c) The output voltage is less than the input voltage
(d) None of these
Explanation: Duplicate of Q1. A step-up transformer increases voltage due to more secondary coil turns (Halliday & Resnick).
#7384
The voltage signal which is generated by a microphone is called: (CSS-2024)
(a) Sound wave
(b) Transverse wave
(c) Audio signal
(d) None of these
Explanation: Duplicate of Q2. Microphones convert sound to electrical audio signals (audio engineering sources).
#7385
The most common gas that is found in the air to breathe is called: (CSS-2024)
(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen
(d) None of these
Explanation: Duplicate of Q3. Nitrogen (~78%) is the most abundant atmospheric gas (NOAA).
#7386
Electromagnetic radiation with maximum wavelength is: (CSS-2024)
(a) Radio waves
(b) Microwaves
(c) Infrared waves
(d) None of these
Explanation: Duplicate of Q4. Radio waves have the longest wavelengths (Young & Freedman).
#7387
The most dangerous type of radiation is: (CSS-2024)
(a) Alpha radiation
(b) Beta radiation
(c) Gamma radiation
(d) None of these
Explanation: Duplicate of Q5. Gamma radiation is highly penetrating (IAEA).
#7388
The solar energy is radiated in the form of: (CSS-2024)
(a) Heat waves
(b) Light waves
(c) Electromagnetic waves
(d) None of these
Explanation: Duplicate of Q6. Solar energy includes electromagnetic waves (NASA).
#7389
The study of human body cells is called: (CSS-2024)
(a) Physiology
(b) Anatomy
(c) Cytology
(d) None of these
Explanation: Duplicate of Q7. Cytology studies cells (Campbell Biology).
#7390
Excessive bleeding during an injury is a deficiency of: (CSS-2024)
(a) Vitamin K
(b) Vitamin C
(c) Vitamin B
(d) None of these
Explanation: Duplicate of Q8. Vitamin K aids clotting (Merck Manual).
#7391
Which gas is used in gas welding? (CSS-2024)
(a) Hydrogen
(b) Oxygen
(c) Ethylene
(d) Acetylene
Explanation: Duplicate of Q9. Acetylene produces a high-temperature flame (AWS).
#7392
Drum printers belong to which of the following category? (CSS-2024)
(a) Ink jet printer
(b) Laser printer
(c) Chain printer
(d) None of these
Explanation: Duplicate of Q10. Drum printers are impact printers (Tanenbaum).
#7393
Machine learning is a sub area of: (CSS-2024)
(a) Hardware Engineering
(b) Artificial Intelligence
(c) Cyber Forensics
(d) None of these
Explanation: Duplicate of Q11. Machine learning is a subset of AI (Russell & Norvig).
#7394
Which of the following can be classified as renewable energy source? (CSS-2024)
(a) Solar energy
(b) Geothermal energy
(c) Tidal energy
(d) All of these
Explanation: Duplicate of Q12. All are renewable (IEA).
#7395
How do scientists know that the Earth’s core is made up of metal? (CSS-2024)
(a) The density of the surface layer of Earth is much less than its average density
(b) The Earth’s rotation speed indicates its core structure
(c) The density of surface layer of Earth is greater than its total density
(d) None of these
Explanation: Duplicate of Q13. High density indicates a metallic core (Tarbuck).
#7396
Maintenance of soil fertility without addition of extra nutrition is due to: (CSS-2024)
(a) Microbial activity
(b) Crop residue
(c) Moisture
(d) None of these
Explanation: Duplicate of Q14. Microbes recycle nutrients (Tate).
#7397
Which of the following statement is true? (CSS-2024)
(a) Water-soluble vitamins cannot be stored in the body
(b) Fat-soluble vitamins can be stored in the body
(c) Body can absorb more of fat-soluble vitamins than required
(d) All of these
Explanation: Duplicate of Q16. All statements are correct (Shils).
#7398
The shortest war in history lasted for how many minutes? (CSS-2024)
(a) 38
(b) 48
(c) 58
(d) None of these
Explanation: The Anglo-Zanzibar War (1896) lasted 38 minutes, per historical records (Guinness World Records).
#7399
The AIIB (Asian Infrastructure Investment Bank) was established by: (CSS-2024)
(a) China
(b) Japan
(c) India
(d) None of these
Explanation: Duplicate of Q22. Initiated by China in 2015 (AIIB).
#7400
What does the “I2-U2” alliance stand for? (CSS-2024)
(a) Turkey-Israel-Ukraine-UK
(b) US-UK-Ukraine-UAE
(c) North America
(d) None of these
Explanation: Duplicate of Q23. I2-U2 is India, Israel, UAE, US (Indian Ministry).