Main Subjects
Main Subjects MCQs With Answers
0 Main Subjects MCQs for CSS, PPSC, FPSC, NTS and entry-test preparation. Take a scored quiz instead →
Computer (406)
Current Affairs (1218)
English (1391)
Everyday Science (687)
General Knowledge (681)
Islamic Studies (850)
Mathematics (1392)
Pakistan Studies (811)
Sunspots appear dark on the Sun’s surface because they are:
AHoles leading into the Sun's core
BShadows of planets passing in front of the Sun
CCovered by clouds of dust
DCooler than the surrounding surface
Which element makes up the largest part of the Sun’s mass?
AHydrogen
BHelium
COxygen
DCarbon
During which phase of the Moon is the Moon not visible from the Earth?
AFull Moon
BFirst Quarter
CNew Moon
DWaxing Gibbous
Approximately how long does sunlight take to reach the Earth?
AAbout 8 seconds
BAbout 8 minutes 20 seconds
CAbout 1 hour
DAbout 1.3 seconds
Which is the hottest planet in our solar system?
AMercury
BMars
CJupiter
DVenus
Paddy (rice) fields, cattle and landfills are major sources of which greenhouse gas?
ACarbon monoxide
BMethane
CSulphur dioxide
DOzone
Minamata disease, first identified in Japan in the 1950s, was caused by poisoning from which metal?
ALead
BCadmium
CMercury
DArsenic
Eutrophication of lakes and ponds is mainly caused by an excess of which nutrients?
ACalcium and magnesium
BSodium and chloride
CIron and zinc
DNitrates and phosphates
Biochemical Oxygen Demand (BOD) of a water sample is a measure of:
AThe hardness of water
BThe amount of oxygen needed by microorganisms to decompose organic matter in it
CThe amount of dissolved salts
DThe pH of water
The Thar coalfield, one of the largest lignite coal reserves in the world, is located in which province of Pakistan?
APunjab
BSindh
CBalochistan
DKhyber Pakhtunkhwa