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 enzyme present in human saliva breaks down starches into simpler sugars?
APepsin
BSalivary Amylase (Ptyalin)
CLipase
DTrypsin
Chemical name of common table salt is:
ASodium Carbonate
BSodium Bicarbonate
CSodium Chloride
DSodium Hydroxide
Which atmospheric layer contains the Earth’s protective ozone layer?
ATroposphere
BStratosphere
CMesosphere
DThermosphere
Which acid is present in lemon juice?
AAcetic acid
BCitric acid
CLactic acid
DTartaric acid
Which gas is primarily responsible for the greenhouse effect and global warming?
AOxygen
BNitrogen
CCarbon dioxide
DArgon
Rusting of iron is an example of which type of chemical process?
AReduction
BOxidation
CSublimation
DEvaporation
Which gas is used in the manufacturing of soft drinks and carbonated beverages?
AOxygen
BCarbon dioxide
CNitrogen
DHydrogen
Which element is abundant in the Earth’s crust by weight?
ASilicon
BAluminum
CIron
DOxygen
What process converts liquid directly into gas below its boiling point?
ABoiling
BEvaporation
CCondensation
DSublimation