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

The following is true about lathe cut amalgam:

  1. Has low creep

  2. Requires least amount of mercury

  3. Has tensile strength, comparable to high copper unicompositional alloys

  4. Achieves lowest compressive strength at 1 hour
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Amalgam alloys can be classified under various headings. One of them is based on the shape of the alloys particles. They can be either Lathe cut or Spherical or Spheroidal.

Multiple choice

Which of the following is liquid at room temperature?

  1. Iron

  2. Mercury

  3. Gold

  4. Aluminium

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mercury is the only metal that exists as a liquid at standard room temperature (20-25°C). This is due to its weak metallic bonding and relatively low melting point of -38.83°C. All other metals listed (iron, gold, aluminum) are solids at room temperature. Mercury's unique liquid state makes it useful in thermometers, barometers, and electrical switches, despite its toxicity.

Multiple choice

Which of the following is a metal?

  1. Nitrogen

  2. Sulphur

  3. Mercury

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

Mercury is the only metal listed among these elements. It is a transition metal that is unique in being liquid at room temperature, which is why it is used in thermometers. Nitrogen and Chlorine are gaseous non-metals, while Sulphur is a solid non-metal.

Multiple choice

Which of the following metals can be easily broken down?

  1. Mercury

  2. Iron

  3. Zinc

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

This question appears to be asking about which metal can be easily CUT or broken (low hardness). Zinc is relatively soft compared to iron and aluminium, and can be more easily deformed or cut. However, the wording 'broken down' is ambiguous. Mercury cannot be 'broken' as it is liquid. Iron and aluminium are harder structural metals. Among solid metals listed, zinc has the lowest hardness.

Multiple choice

Which of the following is a soft metal?

  1. Sodium

  2. Aluminium

  3. Iron

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

Sodium is a very soft metal that can be easily cut with a knife. It is an alkali metal with low hardness due to its large atomic radius and weak metallic bonding (single valence electron). Aluminium, Iron, and Copper are much harder metals used in structural applications. Sodium's softness is characteristic of Group 1 metals.

Multiple choice

Which of the following is a non-metal?

  1. Carbon

  2. Potassium

  3. Sodium

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

Carbon is the only non-metal in this list. It exists as graphite, diamond, or amorphous carbon and lacks metallic properties like luster, electrical conductivity (except graphite), and malleability. Potassium, Sodium, and Mercury are all metals with characteristic metallic properties: conductivity, malleability, and tendency to lose electrons.

Multiple choice

What type of mixture is formed by copper and zinc?

  1. Heterogeneous and solid-solid mixture

  2. Homogenous and solid-non solid mixture

  3. Homogenous and solid-solid mixture

  4. Heterogeneous and solid-non solid mixture
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is a homogenous and solid-solid mixture.

Multiple choice

The metal aluminium ______________ in its pure form in nature.

  1. does not occurs

  2. never occurs

  3. occurs not

  4. occurs neither

  5. is not occurring
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The correct sentence uses simple present with 'never occurs'. 'Does not occurs' has incorrect verb form (should be 'occur'), 'occurs not' has wrong word order, 'occurs neither' is grammatically incorrect, and 'is not occurring' (present continuous) doesn't fit the general truth being stated.