Chemistry · General Awareness

Chemistry of Metals and Alloys

1,762 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

The element used in an electric filament is

  1. Iron

  2. Copper

  3. Tungsten

  4. Aluminium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The ability to emit light at lower energy levels is due to the valence of the electrons and that is where tungsten and its physical and atomic properties come into play for lighting. 

Multiple choice

For protection against gamma radiations, the shields used should be made of

  1. copper

  2. tin

  3. iron

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

Their attenuation is dependent upon the density of the shielding material; it can be shown that a dense shield material with a higher atomic number is a better attenuator of X-rays. Lead enjoys the advantage of being the densest of any commonly available material. Where space is at a premium and radiation protection is important, lead is often preferred. It is recognised that lead is not the densest element (e.g. tantalum, tungsten and thorium are higher on the density scale), but lead is readily available, easily fabricated and the cheapest of these materials.

Multiple choice

The core of the earth is thought to be composed of

  1. Radioactive metals

  2. Molten metallic sulphides

  3. Molten iron and nickel

  4. Molten copper and iron
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The inner core of the Earth, its innermost hottest part as detected by seismological studies, is a primarily solid ball. It is believed to consist of an iron-nickel alloy, and may have a temperature similar to the Sun's surface.

Multiple choice

Which metal is used in photo flash bulbs?

  1. Be

  2. Co

  3. Al

  4. Au
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A flashbulb is made up of a base, either metal or glass, a glass envelope usually coated on the interior and exterior with a plastic safety coating, primer paste, a tungsten igniter filament, a filling of shredded aluminum or other alloys with aluminum and oxygen. It fires when a voltage of 3-30V is applied to the ignition filament.

Multiple choice

Alloy of aluminium containing small amount of magnesium is

  1. Duralumin

  2. Alnico

  3. Rose metal

  4. Stellite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is an alloy of aluminum that contains copper, manganese, magnesium, iron, and silicon and is resistant to corrosion by acids and sea water.Duralumin alloys are relatively soft, ductile, and workable in the normal state; they may be rolled, forged, extruded, or drawn into a variety of shapes and products. Their light weight and consequent high strength per unit weight compared to steel suit them for aircraft construction.