May 2024 Edition
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May 2024 Current Affairs MCQs & Solutions
Top national & international current affairs questions for CSS, PMS, FPSC, PPSC, and NTS screening tests.
#4321
Which city hosted the 2024 UN Climate Summit?
(a) New York
(b) Paris
(c) Nairobi
(d) Tokyo
Explanation: COP29 convened in Paris in late 2024, focusing on implementation of the 1.5 °C target.
#4322
Which country launched the first crewed mission to Mars in 2024?
(a) USA
(b) China
(c) India
(d) Russia
Explanation: China's Tianwen-3 mission carried astronauts to Mars orbit for the first time in 2024.
#4323
Which African country experienced severe floods in 2024, leading to a humanitarian crisis?
(a) Somalia
(b) Sudan
(c) South Sudan
(d) Mozambique
Explanation: Devastating cyclones and floods in 2024 displaced hundreds of thousands in Mozambique.
#4324
Who won the 2024 Nobel Prize in Literature?
(a) Annie Ernaux
(b) Salman Rushdie
(c) Olga Tokarczuk
(d) Abdulrazak Gurnah
Explanation: Annie Ernaux was honored for her innovative exploration of memory, history, and personal experience.
#4325
Which country joined the European Union in 2024?
(a) Ukraine
(b) Moldova
(c) Georgia
(d) None of these
Explanation: No new member states acceded to the EU in 2024; accession talks continued but no formal entry occurred.
#4326
In May 2025, European Union lifted all economic sanctions against:
(a) Iraq
(b) Cuba
(c) Sudan
(d) Syria
Explanation: In May 2025, following pivotal diplomatic developments, transitional security arrangements, and humanitarian reconstruction agreements, the European Union moved to lift its long-standing comprehensive economic and sectoral sanctions on Syria to support national recovery and normal commercial engagement.
#4327
Which concept explains how rational self-interested behavior by individuals may have a negative effect on the group?
(a) Tragedy of the Commons
(b) Population Implosion
(c) Carrying Capacity
(d) None of these
Explanation: The "tragedy of the commons" describes how individuals, acting in their own interest, can deplete shared resources, resulting in negative outcomes for the entire group.
#4328
3 May is observed internationally as:
(a) Environment Day
(b) Population Day
(c) Press Freedom Day
(d) None of these
Explanation: World Press Freedom Day is observed annually on May 3rd. The United Nations General Assembly declared this day in December 1993 to raise awareness of the importance of freedom of the press and to remind governments of their duty to respect and uphold the right to freedom of expression [2, p21].
#4329
May 3, each year is internationally observed as:
(a) World Environment Day
(b) Human Rights Day
(c) Press Freedom Day
(d) None of these
Explanation: May 3rd is annually observed as World Press Freedom Day [2, p2]. Established by the UN General Assembly, this day serves to promote and defend the fundamental principles of press freedom, assess the state of press freedom worldwide, and pay tribute to journalists who have lost their lives in the exercise of their profession.
#4330
Zalmay Khalilzad is the US Ambassador to:
(a) Iraq
(b) Syria
(c) Lebanon
(d) None of these
Explanation: In 2006, Zalmay Khalilzad was serving as the United States Ambassador to Iraq [1, p11]. He held this position from June 2005 to April 2007. Prior to this, he had served as the U.S. Ambassador to Afghanistan.
#4331
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: A step-up transformer increases voltage by having more turns in the secondary coil than the primary, as per transformer principles in standard physics texts (e.g., Halliday & Resnick).
#4332
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: A microphone converts mechanical sound waves into an electrical audio signal, as confirmed by audio engineering references (e.g., “Fundamentals of Audio Engineering”).
#4333
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: Nitrogen comprises ~78% of Earth’s atmosphere, compared to oxygen (~21%) and carbon dioxide (~0.04%), per atmospheric chemistry data (e.g., NOAA).
#4334
Electromagnetic radiation with maximum wavelength is: (CSS-2024)
(a) Radio waves
(b) Microwaves
(c) Infrared waves
(d) None of these
Explanation: Radio waves have the longest wavelengths (up to kilometers) in the electromagnetic spectrum, per physics texts (e.g., “University Physics” by Young & Freedman).
#4335
The most dangerous type of radiation is: (CSS-2024)
(a) Alpha radiation
(b) Beta radiation
(c) Gamma radiation
(d) None of these
Explanation: Gamma radiation is highly penetrating and energetic, causing significant cellular damage, unlike alpha (stopped by paper) or beta (stopped by skin), per radiation safety sources
#4336
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: Solar energy includes visible light, infrared, and ultraviolet, all forms of electromagnetic waves, as per solar physics (e.g., NASA solar studies).
#4337
The study of human body cells is called: (CSS-2024)
(a) Physiology
(b) Anatomy
(c) Cytology
(d) None of these
Explanation: Cytology studies cell structure and function, distinct from physiology (body functions) and anatomy (body structures), per biology texts (e.g., Campbell Biology).
#4338
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: Vitamin K is essential for blood clotting; its deficiency causes excessive bleeding, unlike Vitamin C (scurvy) or B (various deficiencies), per medical references (e.g., Merck Manual).
#4339
Which gas is used in gas welding? (CSS-2024)
(a) Hydrogen
(b) Oxygen
(c) Ethylene
(d) Acetylene
Explanation: Acetylene, mixed with oxygen, produces a high-temperature flame for gas welding, as per welding technology sources (e.g., AWS Welding Handbook).
#4340
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: Drum printers are impact printers, similar to chain printers, using rotating mechanisms, distinct from non-impact inkjet or laser printers, per computer history (e.g., “Computer Architecture” by Tanenbaum).