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 chemistry principles of metallurgy concentration of ore concentration of ores general principles of metallurgy

Which of the following metals is not extracted by leaching?

  1. Aluminium

  2. Mercury

  3. Silver

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

Leaching is a process where ore is soluble and impurities are insoluble, widely used extractive metallurgy technique which converts metals into soluble salts in aqueous media.
Bauxite, SIlver and gold ores are usually soluble in some solvents and hence leaching is used to concentrate them.
Hence, option $B$ is the correct answer.

Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Which of the following is the most reactive metal?

  1. Copper

  2. Gold

  3. Silver

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

Francium, right on the bottom of the group one of periodic table. As we know,size of the atoms increases as you go down a column and decreases as you go across the table. The larger the atom, the easier is to get rid of the valence electrons and easier to react with other atoms. Now if you look at the periodic table, francium has the largest radius therefore it is the most reactive element.

Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Nitrogen and germanium are:

  1. metal and non-metal respectively

  2. metal and metalloid respectively

  3. non-metal and metalloid respectively

  4. non-metal and metal respectively
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hydrogen, oxygen, nitrogen etc. are non-metal and boron, silicon, germanium etc. are metalloids. On the basis of chemical and physical properties, elements are further classified into metals, non metals and metalloids.

Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Mark the correct statement.

  1. Some metals are found in earth's crust in the free state

  2. Metals at the bottom of activity series are least reactive

  3. Gold, silver can never be found in free state

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Some metals are found in earth's crust in the free state. Some are found in the form of their compounds. The metals at the bottom of activity series are least reactive.

Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Read the following statements and answer as true or false.
Metals occur in nature only as free elements.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Given statement is false. Very few elements occur in the free state - example: gold, platinum etc. The rest of the elements are found in the combined state as compounds such as carbonates,sulphides, oxides etc.

Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Which of the following statement(s) is/are true?

  1. Among all the naturally occurring elements, around 80% are metals

  2. Non-metals are more abundant than metals

  3. Sodium and potassium are soft like wax

  4. Bromine is a reddish brown liquid at room temperature
Reveal answer Fill a bubble to check yourself
A,C,D Correct answer
Explanation

In general, elements located in the left two-thirds of the periodic table are metals, and the non-metals are on the right side of the table. 


There are about 98 elements in the periodic table that are found naturally. among which 10 are found in traces. Out of these 98 elements, 13 are non-metals and are metalloids. Thus, 78 are metals out of 98. hence about 80 per cent of all the naturally occurring elements are metals.

Sodium and potassium metals are soft and can be easily cut by a knife.

Bromine is a non-metal and is reddish-brown in colour as liquid and as gas.

Therefore, option $A, C, D$ are correct.

Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Metals and non- metals are separated by a zig - zag line.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

True.

The elements that touch the zigzag line are classified as metalloids. The elements in the far upper right corner are classified as nonmetals. Elements in the first group have one outer shell electron and are extremely reactive. They are called alkali metals.