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Question-1
Atoms of an element that have different numbers of neutrons are called:
(A)
Isobars
(B)
Isotopes
(C)
Isotones
(D)
Isomer
Question-2
Alkaline earth metals are belongs to:
(A)
Group I
(B)
Group II
(C)
Group III
(D)
Group VII
Question-3
The group II metal that is needed by green plants.
(A)
Barium
(B)
Strontium
(C)
Calcium
(D)
Magnesium
Question-4
Sulphuric acid has the formula:
(A)
HSO
4
(B)
H
2
SO
4
(C)
HSO
3
(D)
H
2
SO
3
Question-5
The radioactive halogen is:
(A)
Iodine
(B)
Bromine
(C)
Chlorine
(D)
Astatine
Question-6
The atom which has only one proton in its nucleus is:
(A)
Nitrogen
(B)
Helium
(C)
Argon
(D)
Hydrogen
Question-7
The symbols of elements we use to represent the elements are introduced by:
(A)
Rutherford
(B)
Proust
(C)
Berzelius
(D)
Lavoiser
Question-8
Common salt is:
(A)
Potassium bromide
(B)
Potassium chloride
(C)
Sodium bromide
(D)
Sodium chloride
Question-9
The columns of elements in the periodic table are called:
(A)
Periods
(B)
Class
(C)
Family
(D)
Groups
Question-10
Beryl consists of beryllium, aluminium, silicon and:
(A)
Oxygen
(B)
Nitrogen
(C)
Hydrogen
(D)
Chlorine
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Cambridge Secondary Grade 8
IGCSE
Practice in Related Chapters
Acid and Bases
The World of Matter
Simple Chemical Reactions
The Rock Cycle
Introducing Chemistry
Metals and Metal Compounds
Elements and Atoms
Separation of Mixtures
Compounds and Mixtures
Rocks and Weathering
Patterns of Reactivity
Chemistry and the Environment
Using Chemistry
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