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 non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Which of the following metal exists in free state?

  1. Gold

  2. Platinum

  3. Mercury

  4. All of above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A native metal is any metal that is found in its metallic form, either pure or as an alloy, in nature.

Few examples are gold and silver, platinum, mercury.

These elements exist as these are less reactive and do not form any kind of alloys in their natural state.

Option D is correct.
Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Metals found in a combined state in the earth's crust are known as:

  1. native metal

  2. minerals

  3. metalloids

  4. semi pure
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
A mineral is a naturally occurring chemical compound and has one specific chemical composition of metals and other elements in the combined state.
An ore is a type of rock that contains sufficient minerals with important elements including metals that can be economically extracted from the rock.
A native metal is any metal that is found in its metallic form, either pure or as an alloy, in nature.
A metalloid is any chemical element which has properties in between those of metals and nonmetals, or that has a mixture of them.
All ores are minerals but not vice-versa.
The metals found in the combined state in earth's crust are called minerals.
Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Which of the following metal fall under platinum group?

  1. Silver

  2. Osmium

  3. Rhodium

  4. Both b and c
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The six platinum-group metals are ruthenium, rhodium, palladium, osmium, iridium, and platinum. They have similar physical and chemical properties,[clarification needed] and tend to occur together in the same mineral deposits.
So silver does not fall under platinum group.
Osmium and Rhodium both fall under platinum group.

Hence, option D is correct.
Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Blister copper is:

  1. pure copper

  2. ore of copper

  3. alloy of copper

  4. impure copper
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Blister copper is an impure form of copper having a blister-like surface due to the release of gas during cooling. The purity of this product is 98%, it is known as blister because of the broken surface created by the escape of sulfur dioxide gas as blister copper pigs or ingots are cooled.
Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Which metal is found in liquid state at room temperature?

  1. Iron

  2. Zinc

  3. Mercury

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

Generally all the metals are found in the solid state at room temperature. The exception to this is mercury. Mercury is found in liquid state at room temperature. Whereas non metals are found in the 3 states at room temperature $i.e.$ solid, liquid and gas.

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

Find the odd one out from the following:
Aluminium, iron, copper, silver, iron, brass, sand and shirt 

  1. iron and copper

  2. brass and silver

  3. aluminium and sand

  4. sand and shirt
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ans : (D) Sand and Shirt

Note : Sand $\rightarrow$ it is composition of $SiO _{2}, Al _{2}O _{3}, K _{2}O, ....$ etc. which posses metal properties.
Above all pair posses metal properties except sand and shirt.
Shirt is non-metal (made up of fabric).