Everyday Science
Everyday Science MCQs With Answers
741 Everyday Science MCQs for CSS, PPSC, FPSC, NTS and entry-test preparation. Take a scored quiz instead →
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
Tartaric acid, a naturally occurring acid found in grapes, is commonly used as a key ingredient in which common kitchen product?
AVegetable oil
BVinegar
CBaking powder
DTable salt
Beyond its well-known role in human digestion, hydrochloric acid also has significant applications in which industrial context?
AAs a food sweetener
BIn various industrial processes, including metal cleaning and processing
CAs a common fabric dye
DAs a primary fuel source for vehicles
In optics, what term describes the distance between a lens or curved mirror’s optical center and the point where parallel light rays converge, called the focal point?
ARefractive index only
BFocal length
CAmplitude
DWavelength
Which inventor and engineer made major contributions to the development of alternating current (AC) electrical systems, which remain widely used in power grids today?
ANikola Tesla
BCharles Darwin
CLouis Pasteur
DGregor Mendel
What is the key practical difference between baking powder and baking soda, both commonly used as leavening agents in baking?
ABaking powder already contains an acidic ingredient, so it doesn't require an additional acid to activate it, unlike baking soda alone
BBaking soda always requires more of it to achieve the same rising effect as baking powder
CBaking powder is only used for savory dishes, never in sweet baked goods
DThere is no meaningful difference between the two products