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Question-1
2H
2
+ O
2
→ 2H
2
O. It is a:
(A)
Decomposition reaction
(B)
Synthesis reaction
(C)
Neutralization reaction
(D)
Displacement reaction
Question-2
The scientist who invented argon.
(A)
Linde
(B)
William Ramsay
(C)
Einstein
(D)
Hund
Question-3
Water can be decomposed into hydrogen and oxygen by:
(A)
Heat
(B)
Electricity
(C)
Light
(D)
Oxides
Question-4
The gas produced when iron is placed in hydrochloric acid is:
(A)
Nitrogen
(B)
Hydrogen
(C)
Ammonia
(D)
Oxygen
Question-5
Atmosphere was produced by a process known as:
(A)
Big - bang
(B)
Comparison
(C)
Out - grassing
(D)
Out burst
Question-6
The gas evolved on heating potassium permanganate.
(A)
Oxygen
(B)
Hydrogen
(C)
Carbon dioxide
(D)
Nitrogen
Question-7
In which layer of atmosphere, the amount of hydrogen falls to zero?
(A)
Exosphere
(B)
Mesosphere
(C)
Stratosphere
(D)
Troposphere
Question-8
The gas used in lights for advertising displays.
(A)
Argon
(B)
Krypton
(C)
Neon
(D)
Xenon
Question-9
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-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
Practice in Related Chapters
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Patterns of Reactivity
Chemistry and the Environment
Using Chemistry
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