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

Which of the following metals was not known to the Indus Valley people?

  1. Copper

  2. Bronze

  3. Iron

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

The Indus Valley Civilization (c. 3300-1300 BCE) was a Chalcolithic culture that knew copper, bronze, gold, and silver. Iron smelting was not discovered in the Indian subcontinent until much later, around the beginning of the second millennium BCE, after the decline of the Indus Valley Civilization.

Multiple choice

Directions: Choose the correct set of metals from the given options and complete the sentence. The Indus Valley people knew the use of

  1. gold, silver, copper, bronze but not iron

  2. copper, iron, gold but not bronze

  3. silver, lead, iron but not gold

  4. gold, tin, bronze but not copper
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Archaeological evidence confirms the Indus Valley people knew and worked with gold, silver, copper, and bronze (an alloy of copper and tin). They did not have knowledge of iron smelting. This question tests precise historical knowledge about their metallurgical capabilities during the Chalcolithic period.

Multiple choice

The filament of an electric bulb is made of

  1. iron

  2. nichrome

  3. tungsten

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

Tungsten is used for electric bulb filaments because it has an extremely high melting point (3422°C) and low vapor pressure at high temperatures. This allows it to withstand the intense heat of incandescence without rapidly evaporating or breaking.

Multiple choice

Containers of strong acids are made of

  1. copper

  2. lead

  3. tin

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

Lead is used for containers storing strong acids because it forms a protective oxide layer that resists further reaction with most acids. Copper reacts with oxidizing acids, tin can react with strong acids, and brass (copper-zinc alloy) is also reactive.

Multiple choice

Which of the following statements is false?

  1. Metals like copper, silver, and gold are used to make coins.

  2. Iodine and ammonia are sublimating substances.

  3. Nitrogen is a diatomic molecule.

  4. A mixture is pure where as a compound is impure.

  5. The chemical formula of tin oxide is SnO.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mixture is impure and a compound is in pure state.

Multiple choice

Which of the following is a non metal?

  1. Boron

  2. Tin

  3. Potassium

  4. Astatine

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

Boron is a nonmetal, belongs to 3rd group and has a symbol - B. The other elements of this group are aluminium, gallium,  indium, thallium.