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Question-1
The element used as medicines to treat mental disorders.
(A)
Sodium
(B)
Lithium
(C)
Potassium
(D)
Bromine
Question-2
The group I metal used in photoelectric cells.
(A)
Sodium
(B)
Potassium
(C)
Rubidium
(D)
Caesium
Question-3
The element nitrogen was discovered by:
(A)
Lavoisier
(B)
Berzelis
(C)
Rutherford
(D)
Helium
Question-4
Group I elements are called as:
(A)
Alkali metals
(B)
Alkaline earth metals
(C)
Halogens
(D)
Noble gases
Question-5
The group II metal that is needed by green plants.
(A)
Barium
(B)
Strontium
(C)
Calcium
(D)
Magnesium
Question-6
The yellow - green gas with a melting point of - 100.97
o
C is:
(A)
Bromine
(B)
Chlorine
(C)
Iodine
(D)
Astatine
Question-7
The atom which has only one proton in its nucleus is:
(A)
Nitrogen
(B)
Helium
(C)
Argon
(D)
Hydrogen
Question-8
Beryl consists of beryllium, aluminium, silicon and:
(A)
Oxygen
(B)
Nitrogen
(C)
Hydrogen
(D)
Chlorine
Question-9
Law of conservation of mass was proposed by:
(A)
John Dalton
(B)
Pronst
(C)
Rutherford
(D)
Lavoisier
Question-10
Sulphuric acid has the formula:
(A)
HSO
4
(B)
H
2
SO
4
(C)
HSO
3
(D)
H
2
SO
3
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Cambridge Secondary Grade 8
IGCSE
Practice in Related Chapters
Acid and Bases
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Patterns of Reactivity
Chemistry and the Environment
Using Chemistry
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