everyday science MCQs – Page 16

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 Review each marked answer and report any item that may be outdated or unclear.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
301. Circadian Rhythm refers to _____________?
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A. Human body cycles

B. Planetary movements

C. Calisthenics

D. Formation of galaxies

302. Which group of animals has heterogametic females?
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A. None

B. Rabbit

C. Earthworm

D. Domestic fowl

303. Elements are made of _________?
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A. Atoms

B. Compounds

C. Molecules

D. H2O

304. The pancreas secrets___________?
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A. Bile juice

B. Vitamin A

C. Insulin

D. none of these

305. Covalent network crystals have_____________?
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A. hydrogen bonding

B. discrete molecules linked by Van der waals forces

C. lower melting point then molecular crystals

D. higher melting point then molecular crystals
306. Which one of the following can be synthesized by Liver _______?
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A. Vitamin B6

B. Vitamin E

C. Vitamin K

D. Vitamin B12

307. Afternoon rains in the equatorial region are the result of influences _______?
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A. Land Breeze

B. Monsoon

C. Convectional

D. Frontal

308. The vitamin which is generally excreted by humans in urine is__________?
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A. Vitamin B12

B. Vitamin C

C. Vitamin A

D. Vitamin B

309. Which pollutant from motor car exhaust causes mental disease _____?
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A. Mercury

B. Sulpher Dioxide

C. Carbon dioxide

D. Lead
310. When a patients immune system becomes reactive to a drug, this is an example of?
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A. Allergy

B. Super infection

C. none

D. Drug resistance

311. In a typical H-R diagram, stars are graphed by these two characteristics:
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A. Size and distance

B. Temperature and luminosity

C. Luminosity and distance

D. Distance and temperature

312. Deuterium differs from Hydrogen in having:
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A. Same atomic number and different atomic weight

B. Different atomic number but same atomic weight

C. None

D. Different atomic number and different atomic weight

313. Sunlight is composed of___________?
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A. eight colours

B. six colours

C. Three colours

D. seven colours
314. The repetition of property after a certain interval called ___________?
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A. periodicity of property

B. none of these

C. Atomic radius

D. Electron efinity

315. The ratio of pure gold in 18 carat gold is _______________?
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A. 0.9

B. 0.5

C. 0.75

D. 0.8.5

316. Which of the following metal occurs in free state ______________?
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A. Iron

B. Lead

C. Copper

D. Mercury

317. He was the first scientist to prove that Planets move around the sun?
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A. Galileo Galilei

B. Archimedes

C. None

D. John Kepler

318. The ozone layer is at height of________kilometers from the surface of the Earth?
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A. 20 to 30

B. 40 to 50

C. 10 to 20

D. 30 to 40

319. Most drugs are excreted through_____________?
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A. Skin

B. Lungs

C. Kidney

D. Gallbladder

320. Which of the following is a mammal?
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A. Duck

B. Crocodile

C. Platypus

D. Ostrich