Question

The colour of sandstone not found commonly is ____________

(a) Blue

(b) Red

(c) Brown

(d) White

I have been asked this question by my school teacher while I was bunking the class.

My doubt is from Important Sedimentary Rocks topic in chapter The Study of Rocks of Engineering Geology

Answer 1

Right answer is (a) Blue

For explanation: Sandstones naturally occur in a variety of colours: red, brown, grey and white being the most common colours. The colour of sandstone depends on its composition, especially the nature of the cementing material.