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Question-1
The white precipitate formed when silver nitrate solution in poured into sodium chloride solution.
(A)
Silver chloride
(B)
Sodium nitrate
(C)
Silver hydroxide
(D)
Sodium sulphate
Question-2
High temperature of 3200
o
C can be achieved by heating acetylene in:
(A)
Hydrogen
(B)
Nitrogen
(C)
Helium
(D)
Oxygen
Question-3
The gas used in to lift meteorological balloons into the atmosphere.
(A)
Xenon
(B)
Krypton
(C)
Neon
(D)
Helium
Question-4
The scientist who invented argon.
(A)
Linde
(B)
William Ramsay
(C)
Einstein
(D)
Hund
Question-5
The black crystals obtained on heating silver chloride.
(A)
Silver hydroxide
(B)
Silver oxide
(C)
Silver
(D)
Carbon
Question-6
In which layer of atmosphere, the amount of hydrogen falls to zero?
(A)
Exosphere
(B)
Mesosphere
(C)
Stratosphere
(D)
Troposphere
Question-7
Water can be decomposed into hydrogen and oxygen by:
(A)
Heat
(B)
Electricity
(C)
Light
(D)
Oxides
Question-8
The reaction in which the reactant breaks down into two or more products.
(A)
Synthesis reaction
(B)
Displacement reaction
(C)
Decomposition reaction
(D)
Neutralisation reaction
Question-9
The composition of ozone in stratosphere.
(A)
25%
(B)
18%
(C)
15%
(D)
1%
Question-10
The reaction of iron and sulphur is an example for:
(A)
Decomposition reaction
(B)
Synthesis reaction
(C)
Neutralization reaction
(D)
Displacement reaction
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Cambridge Secondary Grade 8
IGCSE
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