Take this Quiz: GCSE Chemistry: Using Resources | Zestly

Question 1

Which of the following best defines a finite resource in the context of Earth's resources?

Accepted Answer

A resource that is being used up faster than it can be replaced by natural processes.

Question 2

Why is potable water considered different from chemically pure water?

Accepted Answer

Potable water contains dissolved minerals and salts that are safe for human consumption.

Question 3

Which of the following are primary stages in the production of potable water from fresh water sources?

Accepted Answer

Filtration to remove large insoluble particles.

Question 4

What is the main disadvantage of using desalination to produce potable water from seawater?

Answer

It produces water that is too pure for human consumption.

Answer

It requires the addition of harmful chemicals to the water supply.

Answer

It is a very energy-intensive process requiring significant power.

Answer

It is only effective when the water is already partially filtered.

Question 5

Which of the following processes are involved in the treatment of sewage and waste water?

Answer

Screening to remove large debris.

Answer

Sedimentation to produce sewage sludge.

Answer

Desalination to remove dissolved salts.

Answer

Biological treatment to break down organic matter.