Chemistry · General Awareness
Chemistry of Metals and Alloys
1,851 Questions
Review the physical and chemical properties of various metals and their common alloys. This collection covers industrial applications, metallurgical processes, and practical uses of elements like silicon and boron. Practice these questions to strengthen your chemistry fundamentals for exams.
Properties of metalsCommon alloysIndustrial metallurgyChemical applications
Chemistry of Metals and Alloys Questions
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It is malleable.
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It is ductile.
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It is the hardest metal.
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It has a bright yellow colour.
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The symbol of gold element is Au.
C
Correct answer
Explanation
It is very soft metal. It creates alloy with many metals and then the hardness increases.
C
Correct answer
Explanation
Yes, it is the only non-metal in group 1. It is classed with group 1 because, like the alkali metals it has only 1 outer shell.
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Calcium
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Iron
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Aluminium
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Copper
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Lead
A
Correct answer
Explanation
Calcium is the most reactive according to the reactivity series (activity series) of metals.
Decreasing chemical reactivity is:
K > Na > Ca > Mg > Al > Zn > Fe > Sn > Pb > H > Cu > Hg > Ag > Au
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Iron
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Gold
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Silver
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Both (1) and (2)
A
Correct answer
Explanation
Iron is shiny grey but it reacts with water vapours and oxygen present in air. After the reaction, its surface gets covered with the coating of a brown flaky substance called rust. Rust is mainly hydrated ferric oxide (Fe2O3.xH2O). Both gold and silver are unreactive in nature.
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Bronze and brass
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Nickel and steel
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Tin and lead
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Copper and zinc
B
Correct answer
Explanation
Nickel and steel are ferrous alloys.
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silver
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copper
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aluminium
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mercury
D
Correct answer
Explanation
When a metal mixed is with mercury, the alloy formed is known as an amalgam.
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Al, Cu, Mg and Mn
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Fe, Cr and Ni
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Fe and Ni
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Al and Mg
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Cu and Sn
A
Correct answer
Explanation
The composition of alloy duralumin are Al, Cu, Mg and Mn.
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Potassium
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Calcium
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Copper
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Sodium
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Magnesium
C
Correct answer
Explanation
This is the correct option. Copper is the least reactive metal.
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Fe, Co, Zn
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Fe, Co, Ni
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Ti, Fe, Ni
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Co, Ni, Cu
B
Correct answer
Explanation
The substances, which are strongly attracted by magnetic field and show permanent magnetism even in the absence of magnetic field, are ferromagnetic. For example, Fe, Co, Ni, etc.
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Mn is the third most abundant transition element in the earth’s crust.
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Constantan is a copper-nickel alloy.
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[NiCl4]2- is paramagnetic in nature.
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Mn2+ is oxidising in nature.
D
Correct answer
Explanation
The change from Mn2+ to Mn3+ results in the half-filled d orbital (d5), which has extra stability. Hence, Mn2+ is reducing in nature.
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Cu2+ and Fe3+
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Sc3+ and Zn2+
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Sc3+ and Fe3+
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Sc3+ and Cu2+
B
Correct answer
Explanation
Sc3+: 3d0, No unpaired electron-diamagnetic
Zn2+: 3d10, No unpaired electron-diamagnetic
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Wrought iron is the purest form of iron.
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Percentage of silver in German silver is about 10 percent.
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Solder is an alloy of tin and lead.
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Transition metal present in Vit. B12 is cobalt.
B
Correct answer
Explanation
German silver is a copper alloy with nickel and often zinc. German silver is named for its silvery appearance, but it contains no elemental silver.
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Mischmetal
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Amalgam
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Type metal
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White gold
A
Correct answer
Explanation
Mischmetal is an alloy of rare earth elements in various naturally occurring proportions.
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Sc3+, Ti3+, Zn2+
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Sc3+, Ti4+, Cu2+
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Sc3+, Ti4+, Zn2+
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Ti3+, V4+, Zn2+
C
Correct answer
Explanation
Sc3+: 3d0, No unpaired electrons-colourless
Ti4+: 3d0, No unpaired electrons-colourless
Zn2+: 3d10, No unpaired electrons-colourless
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Vanadium
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Cobalt
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Copper
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Zinc
D
Correct answer
Explanation
In all transition metals (except Zn, electronic configuration: 3d10 4s2), there are some unpaired electrons that account for their stronger metallic bonding.
Due to the absence of these unpaired electrons, the interatomic electronic bonding is the weakest in Zn and as a result, it has the least enthalpy of atomisation (126 KJ/mol).