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

Multiple choice

Fuse wire is made up of

  1. 63% tin and 37% lead

  2. 63% lead and 37% tin

  3. 63% tin and 37% aluminium

  4. 63% lead and 37% aluminium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fuse wire is traditionally made of a tin-lead alloy (63% tin, 37% lead) because this combination has a low melting point. When excessive current flows, the wire heats and melts, breaking the circuit and preventing damage to appliances or wiring.

Multiple choice

Electroplating is mostly done on

  1. gold

  2. chromium

  3. zinc

  4. iron
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Electroplating is mostly done on iron to prevent its corrosion and also to improve the looks of the object.

Multiple choice

Give the name of pentavalent material

  1. Arsenic

  2. Boron

  3. Gallium

  4. Aluminium

  5. Indium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Arsenic atom in arsenate has a valency of 5 and is also known as pentavalent arsenic.

Multiple choice

Which of the following sets does not have any alloy of aluminium?

  1. Duralium, magnalium, alnico

  2. Constantan, magnalium, rose metal

  3. Mischmetal, rose metal, constantan

  4. Mischmetal, rose metal, alnico

  5. Rose metal, constantan, duralium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mischmetal is an alloy of rare earth elements in various naturally occurring proportions. Rose's metal consists of 50% bismuth, 25–28% lead and 22–25% tin. Constantan is a copper-nickel alloy usually consisting of 55% copper and 45% nickel.

Multiple choice

Which of the following pairs is incorrect?

  1. Iron - Ductile

  2. Copper - Malleable

  3. Glass - Brittle

  4. Sulphur - Lustrous

  5. Iron - Magnetic
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This pair is incorrect as sulphur is not lustrous in nature, i.e. it is not shiny in nature.

Multiple choice

Pick the odd one out.

  1. Iron

  2. Zinc

  3. Cobalt

  4. Nickel
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Zinc does not show magnetic properties but the rest of them do show.

Multiple choice

The copper is not used to make ___________.

  1. electric wire

  2. cookware

  3. lamp shades

  4. cover of switches

  5. coins
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The copper is not used to make cover of switches because copper is a good conductor of electricity. We would get an electric shock when we touch the cover of switch. The copper is also used to make coins. The coins are made of copper because the coins made from copper stay around for many years.

Multiple choice

The material, which is not used to make coins, is ___________.

  1. gold

  2. copper

  3. nickel

  4. iron

  5. silver
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The material iron is not used to make coins. It is because iron can easily rust on exposure to humid air. Silver is also used to make coin of higher value. Special coins are made, but not currency coins.