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 →
Which simple machine is essentially a thin, wedge-shaped object with a sharp edge, commonly used to cut or split materials apart?
ALever
BWedge
CPulley
DWheel and axle
Calcium carbonate is the main chemical component of which common natural materials?
APetroleum and coal
BRubber and plastic
CTable salt and sugar
DChalk, limestone, and marble
Infrared radiation, though invisible to the human eye, is commonly used in which everyday household device?
AWi-Fi routers
BBluetooth speakers
CRegular incandescent light switches
DTelevision remote controls
Which simple machine is essentially an inclined plane wrapped in a spiral around a central cylinder?
APulley
BLever
CScrew
DWedge
What is the common name for calcium oxide, a chemical compound produced by heating limestone and widely used in cement and construction?
ABaking soda
BSlaked lime
CQuicklime
DTable salt
A microwave oven heats food primarily by causing which molecules within the food to vibrate rapidly?
AProtein molecules only
BFat molecules only
CWater molecules
DSalt molecules only
What term describes the repetition of a sound caused by sound waves reflecting off a distant surface, such as a canyon wall?
AEcho
BDiffusion
CInterference
DResonance
Slaked lime, produced when quicklime reacts with water, is traditionally used for which common purpose?
ASweetening food
BSoftening fabric
CFueling vehicles
DWhitewashing walls and buildings
Which type of electromagnetic radiation, carrying the highest energy on the spectrum, is used in cancer radiotherapy to destroy tumor cells?
AVisible light
BInfrared radiation
CGamma rays
DRadio waves
In a sound wave, what property is most closely related to the loudness that a listener perceives?
AFrequency
BSpeed
CWavelength
DAmplitude