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Question-1
The ore of silver is:
(A)
Silver oxide
(B)
Silver sulphide
(C)
Silver hydroxide
(D)
Silver chloride
Question-2
In extraction of ore, the gold is treated with:
(A)
Sodium chloride
(B)
Potassium nitrate
(C)
Sodium nitrate
(D)
Potassium cyanide
Question-3
Steel used for canning foods is coated with a thin layer of:
(A)
Chromium
(B)
Zinc
(C)
Tin
(D)
Lead
Question-4
Mixture of metals with one or more element to strengthen it is called:
(A)
Ore
(B)
Alloy
(C)
Elements
(D)
Compounds
Question-5
The purity of gold is measured in:
(A)
Carat
(B)
Grams
(C)
Nanometre
(D)
Kilograms
Question-6
The tarnishing of silver is due to the formation of:
(A)
Silver chloride
(B)
Silver sulphide
(C)
Silver hydride
(D)
Silver oxide
Question-7
Brass is an alloy of copper and:
(A)
Tin
(B)
Zinc
(C)
Lead
(D)
Chromium
Question-8
A rock which is rich in a metal compounds is called:
(A)
Compounds
(B)
Minerals
(C)
Ore
(D)
Element
Question-9
When iron is heated in steam, the gas produced is:
(A)
Hydrogen
(B)
Oxygen
(C)
Chlorine
(D)
Carbon dioxide
Question-10
The alloy of lead used to connect wires in electrical circuits.
(A)
Brass
(B)
Pewter
(C)
Solder
(D)
Bronze
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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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