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Main Subjects MCQs With Answers
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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
What is the process called in which iron or steel is coated with a layer of zinc to help prevent rusting?
AVulcanization
BSaponification
CAnodizing
DGalvanization
What term describes the nuclear process in which a heavy atomic nucleus splits into two or more smaller nuclei, releasing a large amount of energy?
AChemical combustion
BNuclear fission
CNuclear fusion
DRadioactive decay only
In a sound wave, what property is most closely related to the pitch that a listener perceives?
ASpeed of sound
BAmplitude
CWave color
DFrequency
What term describes the electrochemical process used to form a durable, protective oxide layer on the surface of aluminum products?
ADistillation
BGalvanization
CAnodizing
DFermentation
What term describes the nuclear process in which light atomic nuclei combine to form a heavier nucleus, releasing energy, and which powers the sun?
ANuclear fusion
BElectrolysis
CBeta decay
DNuclear fission
In what unit is the loudness, or intensity, of sound commonly measured?
AHertz
BDecibels
CWatts per hour
DNewtons
Hydrogen peroxide, commonly used as a mild antiseptic and bleaching agent, has which chemical formula?
AH2O3
BH2O
CHO2
DH2O2
