General Knowledge MCQs (page 28 of 61)
Famous people, inventions, sports, world records, currencies and well-known facts about Pakistan and the world.
1,204 questions. Select an option to check your answer, or open "Show answer". Showing 541–560.
- 541.
The Treaty of Versailles was signed in:
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Answer: B. 1919
It formally ended the war with Germany.
- 542.
World War I began in:
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Answer: B. 1914
It was triggered by the assassination of Archduke Franz Ferdinand.
- 543.
Malaria is caused by:
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Answer: A. Plasmodium
It is spread by the female Anopheles mosquito.
- 544.
A hygrometer measures:
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Answer: D. Humidity
It measures moisture in the air.
- 545.
Atmospheric pressure is measured with a:
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Answer: B. Barometer
Evangelista Torricelli invented it in 1643.
- 546.
An earthquake is recorded by a:
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Answer: C. Seismograph
It records seismic waves.
- 547.
The boiling point of water at sea level in Kelvin is:
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Answer: D. 373 K
100°C equals about 373.15 K.
- 548.
Absolute zero is:
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Answer: D. -273.15°C
It equals 0 Kelvin, the lowest possible temperature.
- 549.
Stainless steel is an alloy of iron with mainly:
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Answer: C. Chromium
Chromium prevents rusting.
- 550.
Bronze is an alloy of copper and:
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Answer: C. Tin
It gave its name to the Bronze Age.
- 551.
Brass is an alloy of copper and:
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Answer: A. Zinc
It is used in fittings and musical instruments.
- 552.
The main component of natural gas is:
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Answer: A. Methane
Its formula is CH₄.
- 553.
"Dry ice" is the solid form of:
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Answer: B. Carbon dioxide
It turns directly into gas at -78.5°C.
- 554.
"Laughing gas" is the common name of:
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Answer: D. Nitrous oxide
It is used as a mild anaesthetic.
- 555.
Pasteurization is named after:
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Answer: C. Louis Pasteur
It kills germs in milk by heating.
- 556.
In plants, xylem transports:
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Answer: D. Water and minerals
Phloem transports food.
- 557.
The theory of evolution by natural selection was given by:
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Answer: D. Charles Darwin
He published "On the Origin of Species" in 1859.
- 558.
Who is known as the "Father of Genetics"?
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Answer: D. Gregor Mendel
He studied inheritance in pea plants.
- 559.
The cell was first discovered by:
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Answer: A. Robert Hooke
He observed cork cells in 1665.
- 560.
Which gas is released during photosynthesis?
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Answer: A. Oxygen
It comes from splitting water molecules.