Question

Question 1}the dot pattern of Braille system are raised slightly when embossed on Braille sheets. Why?
Question 2}Name any two metals which occur in their elemental or native state​

Answer 1

Braille is written on heavy paper, and the raised dots prevent the pages from lying smoothly together as they would in a print book.

Answer 2

Braille system was developed for blind people therefore it is raised slightly when embossed on the braille sheets so that those people could feel it and read it successfully.

• Braille system was developed by Louis Braille.
• He lost his eyesight in an accident in his childhood and wanted to help the other visually impaired people and also for partially blind people.

The two metals which occur in their elemental or native state are gold and platinum.

• There are several other metals that occur in their native state for example silver, copper, iron, etc.
• These metals in their native states are primary ore minerals.