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General Science
Physics, Chemistry, Biology & Everyday Science ยท 15 MCQs
1โ15 of 15 MCQs
1
The study of living organisms is called:
APhysics
BChemistry
CBiology
DGeology
2
The powerhouse of the cell is:
ANucleus
BRibosome
CMitochondria
DCell membrane
3
The chemical formula of salt (common salt) is:
ANaCl
BKCl
CCaClโ
DMgClโ
4
The hardest natural substance is:
AIron
BGold
CDiamond
DPlatinum
5
Photosynthesis occurs in which part of the plant?
ARoots
BStem
CChloroplasts (leaves)
DFlowers
6
What is the atomic number of Carbon?
A4
B5
C6
D7
7
The process of conversion of solid directly to gas is called:
AEvaporation
BCondensation
CSublimation
DMelting
8
Which vitamin prevents scurvy?
AVitamin A
BVitamin B
CVitamin C
DVitamin D
9
The SI unit of force is:
AWatt
BJoule
CNewton
DPascal
10
Which gas is responsible for the greenhouse effect?
AOxygen
BNitrogen
CCarbon Dioxide
DHydrogen
11
The nucleus of an atom contains:
AOnly protons
BOnly neutrons
CProtons and neutrons
DElectrons
12
The speed of sound in air is approximately:
A300 m/s
B340 m/s
C440 m/s
D540 m/s
13
Which organ produces insulin in the human body?
ALiver
BKidney
CPancreas
DSpleen
14
The pH value of pure water is:
A0
B5
C7
D14
15
Malaria is caused by:
ABacteria
BVirus
CProtozoan (Plasmodium)
DFungi