Everyday Science
Everyday Science MCQs with Answers and Explanations
700+ everyday science MCQs with answers and detailed explanations for PPSC, FPSC, NTS & CSS. Repeated past-paper questions with the reasoning explained. Take a scored quiz instead →
Which component of solar radiation causes sunburn and skin cancer upon prolonged exposure?
AInfrared rays
BVisible light
CUltraviolet (UV) rays
DMicrowaves
What is the primary cause of ocean acidification?
AOil spills in oceans
BAbsorption of atmospheric carbon dioxide by oceans
CPlastic pollution
DAgricultural fertilizer runoff
In an ecological food chain, decomposers typically belong to which groups?
AInsects and birds
BBacteria and fungi
CAlgae and mosses
DViruses and protozoa
Which atmospheric gas forms the largest percentage of Earth’s air volume?
AOxygen
BCarbon dioxide
CNitrogen
DArgon
Which planet in our solar system is known as the ‘Red Planet’?
AVenus
BMars
CJupiter
DMercury
What process powers the Sun and other stars?
ANuclear fission
BNuclear fusion
CChemical combustion
DRadioactive decay
A light-year is a unit used to measure:
ATime
BDistance
CLight intensity
DVelocity
Which blood group is universally known as the ‘Universal Donor’?
AA positive
BAB positive
CO negative
DO positive
What is the main chemical constituent of natural gas?
AEthane
BPropane
CMethane
DButane
Gas exchange in human lungs takes place across the walls of:
ABronchi
BTrachea
CAlveoli
DLarynx