Question

(i) What are the minerals most commonly used in Karhai, Pan/Tava, Ornaments, Bell, Hammer, Lamp.
(ii) Identify some more objects made up of different minerals.

NCERT Class 7th Social Science (Our Environment) Chapter 2 Inside our Earth

Answer 1

Minerals used in some objects:

Karhai: iron, copper, stainless steel

Ornaments: gold, silver

Lamp: brass, silver, gold

Hammer: iron, steel, brass, lead

Bell: brass, gold, silver

Pan/Tava: iron, steel, aluminium

Answer 2

The following are the minerals used in the objects:

Karhai: Copper, iron and stainless steel

Pan/Tava: Aluminium, iron and steel,  

Ornaments: Silver and gold

Bell: Gold, silver and brass

Hammer: Steel, brass, iron, lead

Lamp: Silver, gold and brass

The following are the different objects made of different minerals:

1. Pencil: made up of graphite.  

2. Clocks: made up of Pentlandite and Quartz