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 →
A solar eclipse occurs when which celestial body passes directly between the sun and Earth, blocking sunlight?
AMars
BVenus
CThe moon
DAnother star
What term describes the property of a liquid’s surface that causes it to behave somewhat like a stretched elastic sheet, allowing small insects to walk on water?
AViscosity
BDensity
CBuoyancy
DSurface tension
Alum, a chemical compound long used in traditional water treatment, is primarily added to water for what purpose?
ATo increase the water's temperature
BTo add oxygen to the water
CTo help remove suspended particles and clarify the water
DTo add flavor to drinking water
A lunar eclipse occurs when Earth passes between the sun and the moon, causing what to happen?
AThe moon changes its orbit permanently
BEarth's shadow falls on the moon
CThe moon's shadow falls on Earth
DThe sun disappears entirely
What term describes the ability of a liquid to flow through narrow spaces, such as a thin tube or paper towel, without the assistance of external forces like gravity?
ADiffusion
BCapillary action
CViscosity
DBuoyancy
Silica gel packets, commonly found in packaging for shoes and electronics, serve what purpose?
AThey add a pleasant fragrance
BThey act as a fire retardant
CThey absorb moisture to help keep the contents dry
DThey prevent light from entering the package
Why does the same side of the moon always face Earth?
AThe moon does not rotate at all
BThe moon rotates much faster than it orbits
CThe moon is tidally locked, rotating once for every orbit it makes around Earth
DEarth's gravity prevents the moon from rotating
Why do people sometimes feel their ears ‘pop’ during air travel or when driving up a steep mountain?
ABecause changing air pressure causes the eardrum to adjust as air moves through the Eustachian tube
BBecause sound waves become trapped in the ear canal
CBecause temperature changes freeze fluid in the ear
DBecause gravity decreases at higher altitude
Naphthalene, the chemical compound traditionally used to make mothballs, has an unusual property of transitioning directly from which state to which state at room temperature?
AFrom solid to gas, a process called sublimation
BFrom liquid to gas
CFrom gas to liquid
DFrom solid to liquid only
Why is an extra day added to the calendar approximately every four years, creating a leap year?
ATo align with the length of a typical human lifespan
BTo match the phases of the moon exactly
CBecause scientists agreed to add a day arbitrarily
DTo correct for Earth's orbit around the sun taking slightly longer than exactly 365 days