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

A photographic plate uses

  1. silver iodide

  2. silver bromide

  3. silver hydroxide

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

Photographic plates and films are coated with a light-sensitive emulsion containing silver bromide, which decomposes upon exposure to light.

Multiple choice

Lead pencil contains

  1. lead

  2. lead oxide

  3. graphite

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lead pencils do not contain the element lead; they contain a mixture of graphite and clay. Graphite is the material that leaves marks on paper.

Multiple choice

The filament of electric bulb is made of

  1. nichrome

  2. tungsten

  3. iron

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tungsten has an extremely high melting point (about 3422 degrees Celsius), which allows it to glow white-hot without melting when an electric current passes through it. This property makes it ideal for incandescent bulb filaments.

Multiple choice

Core of transformer is made up of ___________.

  1. Steel

  2. Soft iron

  3. Copper

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The core of a transformer is made of soft iron to provide a low-reluctance path for the magnetic flux, which increases the efficiency of the magnetic coupling between the primary and secondary coils.

Multiple choice

Which among the following is the hardest metal?

  1. Tungsten

  2. Gold

  3. Iron

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

Tungsten has the highest melting point of all metallic elements and is exceptionally hard. It is frequently used in alloys to increase hardness and durability.

Multiple choice

The wire of the flash bulb is made of

  1. magnesium

  2. zinc

  3. copper

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

Flash bulbs contain a thin wire or foil made of magnesium. When ignited in an oxygen-rich environment, it burns rapidly, producing a bright flash of light.

Multiple choice

A solution of zinc chloride can't be stored in a vessel mode of

  1. Aluminum

  2. Gold

  3. Lead

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

Zinc chloride is a reactive salt that can undergo displacement reactions with more reactive metals. Aluminum is more reactive than zinc, so it will displace zinc from the solution, causing the vessel to corrode.

Multiple choice

Gun metal is an alloy of

  1. Cu, Sn & Zn

  2. Fe & Zn

  3. Au & Ag

  4. Cu & Au
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gun metal is a type of bronze, which is an alloy primarily consisting of copper (Cu), tin (Sn), and zinc (Zn).

Multiple choice

Brass is an alloy, whereas air is a _______.

  1. gas

  2. mixture

  3. compound

  4. solution

  5. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Air is a homogeneous mixture of various gases, primarily nitrogen and oxygen, rather than a chemical compound or a single solution.

Multiple choice

Blister copper is

  1. an ore of copper.

  2. pure copper.

  3. impure copper.

  4. an alloy of copper.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Blister copper is impure copper

Multiple choice

Emeralds are made up of

  1. carbon

  2. silica

  3. beryllium

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

Emeralds are a variety of the mineral beryl. Beryl is a mineral composed of beryllium aluminium cyclosilicate.

Multiple choice

Of what metals were Sharagani and Jeetal made?

  1. Silver and Gold

  2. Silver and Bronze

  3. Silver and Copper

  4. Silver and Tin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sharagani and Jeetal were made of silver and copper. These are some of the manuscripts made with metals like silver and copper.