everyday science MCQs – Page 21

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 Review each marked answer and report any item that may be outdated or unclear.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
401. Short-sight defect could be corrected by a _____________ lens?
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A. concave lens

B. converging lens

C. none of these

D. convex lens

402. ___________are negatively (-) charged particles of an atom?
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A. Electrons

B. None of These

C. Protons

D. Neutrons

403. Serum if blood plasma minus its?
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A. none

B. Globulins

C. Clotting proteins

D. Calcium ions

404. A substance which increases the efficiency of a catalyst is termed as:
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A. Activator

B. Super catalyst

C. Retarder

D. Promoter
405. The final phase of a stars evolution is determined by the stars:
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A. Gravitational pull

B. Age

C. Mass

D. Density

406. The blue colour of clear sky is due to_______________?
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A. Refraction of light

B. Diffraction of light

C. Reflection of light

D. Dispersion of light
407. Sunlight is a Great Source of ____________?
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A. vitamin D

B. vitamin C

C. vitamin E

D. vitamin K

408. All matter is made of ___________?
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A. Air

B. Water

C. Atoms

D. Vibrations

409. Electron was discovered by?
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A. James Maxwell

B. Yuri Gagarin

C. Michael Faraday

D. J.J Thomson
410. The shape of the external ear is due to____________?
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A. none

B. Fibrocartilage

C. Elastic cartilage

D. Articular cartilage

411. The human brain uses__________ percent of the total oxygen and blood in the body?
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A. 48

B. 35

C. 20

D. 12

412. What is meant by Equinox?
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A. The sun-month long day

B. Equal duration of day and night

C. The longest day

D. The shortest day

413. The property of a substance to absorb moisture from the air on exposure is called____________?
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A. osmosis

B. desiccation

C. efflorescence

D. deliquescence
414. Each electron in an atom must have its own unique set of quantum numbers is a statement of_______________?
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A. Hunds rule

B. Pauli exclusion principle

C. Periodic law

D. Aufbau principle

415. Pedosphere is sum of_____________?
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A. Air

B. Soil and water

C. All of above

D. Organisms

416. The season changes because of the ____________?
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A. Earth is revolving round its axis

B. Planet Mars is attracting the sun

C. Earth is revolving round the sun

D. Moon is revolving round the earth

417. All of the following statements are incorrect except:
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A. Scientific work must be precise, accuracy is not essential

B. Calculations must be made before any experiment

C. Scientific work must be accurate, precision is not essential

D. Precision and accuracy should go side by side in a scientific work
418. The large dark patches on the Moons surface are known as___________?
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A. Dark matter

B. Maria, or seas, even though there is no water on the Moon

C. Moon spots

D. Maria, or seas, because they are filled with water

419. When a warm air is lifted off the surface in temperature depression it is called ________?
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A. An anticyclone

B. A warm front

C. An occlusion

D. A cold front

420. Vacuum tubes have been replaced by__________?
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A. Transistors

B. Conductors

C. None of these

D. Diodes