MEDIUM
Earn 100

List the uses of copper.

Important Questions on Making Use of Metals

EASY
Give one use each of copper and aluminium.
MEDIUM

Which of the properties of metals is utilised in the following instances?

-Aluminium utensils are utilised for cooking.

-Copper is used for making vessels.

-Gold wires are used in making jewellery. 

HARD

Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).

HARD
The process in which metal oxide is reduced to metal is called:
HARD

Copper has higher electrical conductivity than that of silver.

MEDIUM

Represent the union of two sets by Venn diagram for each of the following.

X={x | x is a prime number between 80 and 100}

Y={y | y is an odd number between 90 and 100}

EASY

Explain the following:

Aluminium metal is frequently used as reducing agent for the extraction of metals such as Cr, Mn, Fe, etc.

EASY
Which metal is powdered, suspended in oils as a paint for mirrors?
HARD

Why aluminium is used for wrapping of food items?

MEDIUM

List out the characteristics of this metal based on its property.

Reflectors.

MEDIUM
Aluminium deposited as vapour on glass forms a good mirror, essentially because:
EASY
Al wires are used as electric cables due to their silvery-white colour.