What can form desert varnish?
Answer and explanation
Correct answer: A thin coating of iron and manganese oxides on rock surfaces
Desert varnish is a thin, dark, strongly attached coating that develops on exposed rock surfaces in arid environments. It commonly contains clay minerals together with manganese and iron oxides, supplied and concentrated by dust, moisture films and microbial or chemical processes. Option B is correct; coral, glacial melting and ponor formation do not produce this surface coating.
Frequently asked questions
What is the correct answer to this question?
A thin coating of iron and manganese oxides on rock surfaces
Why is this the correct answer?
Desert varnish is a thin, dark, strongly attached coating that develops on exposed rock surfaces in arid environments. It commonly contains clay minerals together with manganese and iron oxides, supplied and concentrated by dust, moisture films and microbial or chemical processes. Option B is correct; coral, glacial melting and ponor formation do not produce this surface coating.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting. Topic: Accounting Information.
