Saleha Pervez and Shikha Goel Solutions for Chapter: Metallurgy, Exercise 5: CHAPTER EXERCISE

The fusible compound formed by the combination of flux and gangue is called _____.

${\mathrm{Fe}}_3{\mathrm{O}}_4$ is the chemical composition of _____ ore.

Pure aluminium oxide is dissolved in _____  to make a conducting solution.(cryolite/potassium hydroxide)

Choose from the following metals to answer the question given below.

Aluminium, calcium, copper, iron, magnesium, potassium, nickel and zinc.

Name a metal that is manufactured by the electrolysis of its molten oxide.

Choose from the following metals to answer the question given below.

Aluminium, calcium, copper, iron, magnesium, potassium, nickel, zinc

Name a metal which is used to galvanise iron.

Choose from the following metals to answer the question given below.

Aluminium, calcium, copper, iron, magnesium, potassium, nickel, zinc.

Name a metal which is alloyed with zinc to make brass.

Choose from the following metals to answer the question given below.

Aluminium, calcium, copper, iron, magnesium, potassium, nickel, zinc.

Name a metal which reacts with aqueous copper (II) sulphate to give a pink solid.

Explain the following:

Metals like $\mathrm{N}\mathrm{a}, \mathrm{K}, \mathrm{C}\mathrm{a}$ and $\mathrm{M}\mathrm{g}$ are never found in their free state in nature.