Everyday Science
Everyday Science MCQs With Answers
696 Everyday Science MCQs for CSS, PPSC, FPSC, NTS and entry-test preparation. Take a scored quiz instead →
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What term describes a substance, such as lecithin, that helps combine two liquids that would not normally mix well, like oil and water, into a stable, uniform mixture?
ASolvent
BEmulsifier
CPreservative only
DCatalyst
Formic acid, a chemical compound naturally found in the stings of ants and certain other insects, is primarily responsible for what effect on the skin?
AA distinct sweet taste
BA pleasant cooling sensation
CThe burning, stinging sensation associated with certain insect stings and bites
DImmediate numbness with no other sensation
Algae, a diverse group of typically aquatic organisms ranging from single-celled forms to large seaweeds, are notable for their ability to do what?
ADigest other organisms directly
BMove rapidly through water using specialized limbs
CSurvive exclusively in extremely dry desert environments
DPerform photosynthesis, producing their own food using light energy
Which inventor is most widely credited with inventing and patenting the telephone in the late nineteenth century?
AGuglielmo Marconi
BAlexander Graham Bell
CJames Watt
DThomas Edison
MSG, or monosodium glutamate, is a chemical compound commonly added to food for what specific purpose?
ATo sweeten food
BTo enhance and intensify savory flavor
CTo act as a coloring agent
DTo thicken liquids
The dark tarnish that gradually forms on the surface of silver objects over time is primarily caused by a chemical reaction with what substance in the surrounding air?
ASulfur-containing compounds
BOxygen alone
CWater vapor alone
DPure nitrogen gas
Which inventor is most closely associated with developing the first commercially practical incandescent electric light bulb?
AIsaac Newton
BThomas Edison
CMichael Faraday
DJames Watt
Citric acid, a compound responsible for the characteristically sour taste of lemons and other citrus fruits, is also widely used commercially for what purpose?
AAs a natural food preservative and flavoring agent
BAs a building material
CAs a metal conductor
DAs a fuel additive only
Sodium hydroxide, also commonly known as caustic soda, is a strong base widely used in the manufacturing of which everyday product?
ASoap
BVinegar
CTable salt
DTable sugar
Which inventor is widely credited as a pioneer of long-distance radio transmission, receiving the Nobel Prize in Physics in 1909 for this work?
AGuglielmo Marconi
BJames Watt
CAlexander Graham Bell
DThomas Edison