General Knowledge

Boost your exam preparation with the latest General Knowledge MCQs with answers and explanations. Our collection covers current affairs, world geography, history, Pakistan studies, sports, science, technology, and important international organizations. These General Knowledge multiple-choice questions are designed for students, job seekers, and competitive exam aspirants preparing for NTS, PPSC, FPSC, CSS, PMS, university entry tests, and recruitment exams. Practice online with updated General Knowledge MCQs to improve awareness, sharpen memory, and score higher in tests and interviews.

📘 Awards and Honours MCQs
📘 Basic General Knowledge MCQs
📘 Biology MCQs
📘 Books and Authors MCQs
📘 CAPITAL & FAMOUS CITIES
📘 Chemistry MCQs
📘 Days and Years MCQs
📘 Environmental Science MCQs
📘 Famous Personalities MCQs
📘 Famous Places in India MCQs
📘 General Science MCQs
📘 GK
📘 Honours and Awards MCQs
📘 Indian Culture MCQs
📘 Indian Geography MCQs
📘 INTERNATIONAL AFFAIRS
📘 Inventions MCQs
📘 Physics MCQs
📘 Sports MCQs
📘 Teaching and Research MCQs
📘 Technology MCQs
📘 World Geography MCQs
📘 World Organisations MCQs

1552. The heating of earth’s atmosphere due to trapped radiation is known as

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A. Global warming
B. Glass-House effect
C. Thermal effect
D. Green House effect
✅ The correct answer is option D.
Heating of the Earth surface due to radiation of the Sun trapped by carbon dioxide and water vapour in the atmosphere is called as Green house effect.

1554. The proper order from shortest to longest wavelength is:

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A. Visible, infrared, ultraviolet
B. Infrared, visible, ultraviolet
C. Ultraviolet, visible, infrared
D. Visible, ultraviolet, infrared
✅ The correct answer is option C.
The electromagnetic spectrum includes, from shortest wavelength to longest: Ultraviolet, visible, infrared.

1555. The pyramid of energy in terrestrial ecosystem is

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A. Upright
B. Inverted
C. Spindle shaped
D. Irregular
✅ The correct answer is option A.
The pyramid of energy in terrestrial ecosystem is upright. Pyramid of biomass for terrestrial ecosystems (grasslands, forests) the biomass generally decreases at each higher trophic level from plants via herbivores to carnivores.

1557. BOD of a river water is found very high. This means water

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A. is clear
B. is highly polluted
C. contain Algae
D. contain many dissolved minerals
✅ The correct answer is option B.
BOD (Biological Oxygen Demand or Biochemical Oxygen Demand) is the amount of dissolved oxygen, expressed in milligrams of oxygen per litre of water, consumed by micro-organisms to decompose the organic matter present in water.

1558. One atom of chlorine can destroy over __________ molecules of ozone.

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A. 100000
B. 10000
C. 25000
D. 1000
✅ The correct answer is option A.
One chlorine atom can destroy over 100,000 ozone molecules before it is removed from the stratosphere. Ozone can be destroyed more quickly than it is naturally created. methyl bromide A compound consisting of carbon, hydrogen, and bromine.

1559. The response of predator to prey and vice-versa, over ten of thousands of years, produces physical and behavioral changes in a process called

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A. Co-evolution
B. Evolution
C. Origin
D. Development
✅ The correct answer is option A.
The response of predator to prey and vice versa, over tens of thousands of years, produces physical and behavioral changes in a process known as coevolution. Coevolution can be mutually beneficial: many plants and pollinators have forms and behaviors that benefit each other.

1560. “Silent Spring” is a well known book written by

by
A. John Miller
B. Charles Darwin
C. Rachel Carson
D. Aldoleopold
✅ The correct answer is option C.
Silent Spring is an environmental science book by Rachel Carson. The book was published on September 27, 1962, documenting the adverse environmental effects caused by the indiscriminate use of pesticides.