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
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📘 GK
📘 Honours and Awards MCQs
📘 Indian Culture MCQs
📘 Indian Geography MCQs
📘 INTERNATIONAL AFFAIRS
📘 Inventions MCQs
📘 Physics MCQs
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📘 Teaching and Research MCQs
📘 Technology MCQs
📘 World Geography MCQs
📘 World Organisations MCQs

1864. The source of energy in an ecosystem is

by
A. ATP
B. Sunlight
C. D.N.A
D. R.N.A
✅ The correct answer is option B.
The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.

1866. What is the man-made greenhouse gas known as?

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A. Carbon dioxide
B. HFC
C. Ozone
D. Water Vapour
✅ The correct answer is option B.
Many greenhouse gases occur naturally in the atmosphere, such as carbon dioxide, methane, water vapor, and nitrous oxide, while others are synthetic. Those that are man-made include the chlorofluorocarbons (CFCs), hydrofluorocarbons (HFCs) and Perfluorocarbons (PFCs), as well as sulfur hexafluoride (SF6).

1867. In the Northern Hemisphere, this day has the fewest hours of daylight:

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A. Summer solstice
B. Winter solstice
C. Vernal equinox
D. Autumnal equinox
✅ The correct answer is option B.
For people in the Northern Hemisphere, the December solstice marks the exact opposite, the day of the year with fewest hours of daylight. North of the Arctic Circle towards the North Pole there is no direct sunlight at all during this time of the year.

1868. In an aquatic ecosystem, the tropic level equivalent to cows in grasslands is

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A. Nekton
B. Zooplankton
C. Phytoplankton
D. Benthos
✅ The correct answer is option B.
Zooplanktons are the microscopic animals that on the phytoplanktons in an aquatic ecosystem. These are truely herbivorous and Form the second trophic level (primary consumers) equivalent to cows in grasslands.

1870. The book silent spring was written by

by
A. Madhav Gadgil
B. Anil Agarwal
C. Rachel Carson
D. E.O.Wilson
✅ The correct answer is option C.
On June 4, 1963, less than a year after the controversial environmental classic “Silent Spring” was published, its author, Rachel Carson, testified before a Senate subcommittee on pesticides. She was 56 and dying of breast cancer.