everyday science MCQs – Page 32

Practise multiple-choice questions from everyday science for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

everyday science Mcqs
621. The pyramid of energy in any ecosystem is _________?
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A. Always Circle

B. May be upright or invented

C. Always inverted

D. Always upright
622. Humans can hear in the range of ______ to _______Hertz (Hz).?
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A. 40 Hz to 40,000 Hz.

B. 30 Hz to 30,000 Hz.

C. 20 Hz to 20,000 Hz.

D. 10 Hz to 10,000 Hz.

623. Candela is the basic unit of_________________?
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A. luminous intensity

B. radioactive decay

C. heat producing value

D. Thermodynamic temperature

624. The atmospheric greenhouse effect is produced mainly by the __________________?
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A. Absorption and re-emission of visible light by the ground

B. Absorption and re-emission of visible light by the atmosphere

C. Absorption and re-emission of visible light by clouds

D. Absorption and re-emission of ultraviolet radiation by the atmosphere

E. Absorption and re-emission of infrared radiation by the atmosphere
625. There is no connection of supernova explosion with___________?
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A. The formation of heavy elements

B. Pulsars

C. Quasars

D. Cosmic rays

626. What is the symbol of Gold?
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A. Ag

B. Au

C. None

D. S

627. Primary cosmic rays are composed largely of very fast__________?
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A. Neutrons

B. Gamma rays

C. Protons

D. Electrons

628. CT Scan stand for__________?
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A. Computed Topography Scan

B. Computed Tomography Scan

C. Computer Topography Scan

D. Computer Tomography Scan

629. When oil and gas resources are burnt they kill many forests and lakes by ________________ ?
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A. water pollution

B. acid rain

C. deforestation

D. forest fire

630. The Planet of the solar system which has Maximum number of moons is___________?
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A. Venus

B. Uranus

C. Saturn

D. Jupiter
631. Haileys comet is visible after every_________?
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A. 84 years

B. 1000 years

C. 76 years

D. 365 years

632. Montreal Protocol 1987 was__________?
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A. Trade policy about tarrifs

B. Climate control treaty

C. Treaty among nations to reduce nuclear arsenals

D. Treaty to protect ozone layer
633. The scientific study of measurement is known as __________?
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A. Ichthyology

B. Ecology

C. Entomology

D. Metrology
634. Who was the first to measure the earths radius
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A. Ptolemy

B. Galileo

C. Copernicus

D. Eratosthenes
635. The most brightest planet amongst the eight planets?
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A. Mercury

B. Neptune

C. Jupiter

D. Venus
636. The Sun produces most of its energy by_____________?
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A. Nuclear fusion

B. Burning hydrogen

C. None of these

D. nuclear fission

637. When we sleeps blood pressure_____________?
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A. Decreases

B. None of these

C. Increases

D. Remain constant

638. In which layer of atmosphere does commercial aircrafts usually fly?
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A. Stratosphere

B. Thermosphere

C. Mesosphere

D. Troposphere

639. The top atmosphere of the Earth directly reflects back into space nearly what part of the total amount of suns energy coming to it?
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A. 20%

B. 30%

C. 50%

D. 10%

640. Which of the following is the hardest substance?
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A. Iron

B. Diamond

C. Copper

D. Silicon