Chemistry ยท 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

The filament of an electric bulb is made of

  1. copper

  2. soft iron

  3. cast iron

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

Tungsten is used for lamp filaments because it has the highest melting point of all metals (3422 degrees Celsius). This allows it to glow white-hot without melting when an electric current passes through it.

Multiple choice

The wire of flash bulb is made of

  1. copper

  2. barium

  3. magnesium

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

Flash bulbs used in early photography contained a fine wire or foil made of magnesium or aluminium. When ignited by an electric current, the metal burns rapidly in an oxygen-rich atmosphere, producing a brilliant white flash. Magnesium is the classic material for this purpose.

Multiple choice

The metal chiefly used for galvanising iron is

  1. zink

  2. mercury

  3. cadmium

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

Galvanization is the process of applying a protective coating of zinc to iron or steel to prevent rusting. Zinc acts as a sacrificial anode, corroding in place of the iron. Note that 'zink' is a common misspelling of 'zinc'.

Multiple choice

Stainless steel is an alloy of

  1. iron and nickel

  2. iron, chromium and nickel

  3. iron, chromium and zinc

  4. iron and manganese
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In addition to iron, carbon, and chromium, modern stainless steel may also contain other elements, such as nickel, niobium, molybdenum, and titanium.

Multiple choice

Which one of the following alloys melts at low temperature?

  1. Solder

  2. Brass

  3. Bronze

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

Solder is a fusible metal alloy used to join together metal workpieces and having a melting point below that of the workpiece. It has lowest melting point of the given substances.

Multiple choice

The lightest metal is

  1. Li

  2. Al

  3. Ca

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

Lithium is the lightest metal in the periodic table.

Multiple choice

Bronze is an alloy of ________.

  1. iron and gold

  2. copper and tin

  3. copper and lead

  4. iron and aluminum

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

Bronze is a metallic alloy consisting primarily of copper, usually with tin as the main additive.

Multiple choice

Directions: Choose a word from the given options that belongs to the same group.

Tungsten is related to Filament in the same way as Bronze is related to

  1. Copper

  2. Ships

  3. Tin

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

Tungsten is the specific metal used to create the filament in a light bulb. Similarly, bronze is a metal alloy frequently used to create ornaments, statues, and medals. This analogy follows the relationship of a material to the object it is commonly used to produce.

Multiple choice

Which of the following is a soft metal?

  1. Silver

  2. Chromium

  3. Aluminium

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

Potassium is an alkali metal and is soft enough to be cut with a knife, unlike the other options which are harder transition or post-transition metals.

Multiple choice

Aluminum Bronze is used to make _____.

  1. coins and statues

  2. magnets

  3. aircrafts

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

Aluminum bronze is a type of bronze where aluminum is the main alloying metal; it is highly resistant to corrosion and is commonly used for coins and statues.