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 substance used for making nuts and bolts is

  1. Mild Steel

  2. High Speed Steel

  3. High Tensile Steel

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

It's composition is: 0.15 to 0.30% carbon. It is tough, has high tensile strength and ductility. It can be used as girders, plates, nuts and bolts.

Multiple choice

The composition of ‘Frary metal’ is __________.

  1. 88% Cu, 10% Sn, 2% Zn and 0.5% Pb

  2. 97% Pb, 2% Ba and 1% Ca

  3. 50% Bi, 25% Pb and 25% Sn

  4. 76% Sn and 24% Pb

  5. Cu 25-30%, Zn 25-30% and Ni 40–50%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Frary metal consists of 97% Pb, 2% Ba and 1% Ca.

Multiple choice

Which of the following statements is/are false? P. Linotype alloy is composed of 86% Pb, 11% Sb and 3% Sn. Q. The composition of wood’s metal is 68% Ni, 27% Cu and 5% Fe and used in soldering. R. Cunife 1 is composed of 60% Cu, 20% Ni and 20% Fe.

  1. Only P

  2. Only Q

  3. Only R

  4. Only P and Q

  5. Only Q and R
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Wood’s metal is composed of 50% Pb, 25% Sn, 12.5% Cd and 12.5% Bi. This alloy has melting point of 80oC and used in soldering. Monel metal is composed of 68% Ni, 27% Cu and 5% Fe and used in the making of boilers of ships. Hence, statement Q is  false.

Multiple choice

Which of the following statements is/are false? P. Devarda's alloy is consists of aluminium (44% – 46%), copper (49% – 51%) and zinc (4% – 6%) and used as reducing agent in analytical chemistry. Q. Manganin contains 86% magnesium, 12% tin and 2% nickel. R. Muntz metal is used as an architectural material and composed of 60% copper, 40% zinc and a trace of iron.

  1. Only P

  2. Only Q

  3. Only R

  4. Only P and Q

  5. Only Q and R
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, it is the correct answer, as the statement is false. Manganin is a trademarked name for an alloy of typically 86% copper, 12% manganese and 2% nickel. Manganin foil and wire is used in the manufacture of resistors, particularly ammeter shunts, because of its virtually zero temperature coefficient of resistance value.

Multiple choice

Amalgam is a mixture of

  1. Hg and Pb

  2. Hg and Na

  3. Hg and Au

  4. Hg and Al
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Amalgam is a metallic filling material composed from a mixture of mercury (from 43% to 54%) and powdered alloy made mostly of silver, tin,zinc and copper commonly called the amalgam alloy.

Multiple choice

Which of the following metals is not used as an electromagnet?

  1. Iron

  2. Copper

  3. Nickel

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

Electromagnets require ferromagnetic materials to concentrate magnetic flux. Iron, nickel, and cobalt are ferromagnetic, whereas copper is a non-magnetic metal and cannot be used to create an electromagnet.

Multiple choice

The metals known to the Indus Valley people were

  1. copper, gold, bronze and iron

  2. copper, iron, bronze and silver

  3. bronze, gold, copper and silver

  4. iron, bronze, silver and gold
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Indus Valley Civilization was a Bronze Age civilization. They used copper, bronze, silver, and gold, but they did not have knowledge of iron.

Multiple choice

What is an amalgam?

  1. The mixture of a metal with Na

  2. An alloy

  3. The mixture of two metals

  4. The mixture of a metal with Hg
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ans : 4.

Multiple choice

The metal mercury

  1. is the hardest known metal

  2. is liquid at room temperature

  3. is highly radioactive

  4. is extensively used in the construction of aircrafts
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mercury is a chemical element with the symbol Hg and atomic number 80. It is well known for being the only metallic element that is liquid at standard temperature and pressure.