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

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.

Multiple choice

Which of the following elements has the highest metallic character?

  1. Potassium

  2. Cesium

  3. Rubidium

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

Metallic character refers to the tendency to lose electrons. Li, Na, K and Rb are the members of group 1. As we move down the group from Li to Rb, the atomic size increases because the number of shells increases. Due to this increased atomic size, the effective nuclear charge experienced by electrons present in the outermost shell decreases. As a result, it becomes easier for an element to lose its electron, i.e. on moving down the group, metallic character increases. Therefore, Li is the least metallic, whereas Rb is the most metallic from all the given elements.

Multiple choice

Which metal is used to make the filament of an electric bulb?

  1. Nichrome

  2. Tungsten

  3. Iron

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

Tungsten (W) is used for electric bulb filaments because it has the highest melting point of all metals at approximately 3422°C (6192°F), allowing it to remain solid and emit light at the high temperatures (~2500°C) needed for bright illumination. It also has very low vapor pressure at high temperatures, meaning it doesn't evaporate quickly. Nichrome (nickel-chromium alloy) is used for heating elements, not light bulb filaments. Iron would melt quickly at bulb operating temperatures.

Multiple choice

The most conducting metal is

  1. iron

  2. silver

  3. gold

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

Silver has the highest electrical conductivity of all metals, approximately 6.30×10^7 S/m at room temperature. This means it allows electric current to pass through it with the least resistance. Gold and copper are also excellent conductors, but silver outperforms all metals in conductivity.