Question

Match the following:

$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{A. Mining}& \text{(i) Deep bores have to be made to reach mineral}\\ & \text{deposits that lie at great depths}\\ \text{B. Open cast Mining}& \text{(ii)The process of extracting minerals from rocks}\\ & \text{under the earth’s surface}\\ \text{C. Shaft Mining}& \text{(iii) Minerals that lie at shallow depths are taken}\\ & \text{out by removing the surface layer}\\ \text{D. Quarrying}& \text{(iv) Minerals that lie near the surface are simply}\\ & \text{dug out}\end{array}$

• A. A-(ii), B-(iii), C-(i), D-(iv)
• B. A-(ii), B-(i), C-(iii), D-(iv)
• C. A-(ii), B-(i), C-(iii), D-(iv)
• D. A-(ii), B-(iii), C-(iv), D-(i)

Answer 1

The correct option is A A-(ii), B-(iii), C-(i), D-(iv)

The process of taking out minerals from rocks buried under the earth’s surface is called mining. Minerals that lie at shallow depths are taken out by removing the surface layer; this is known as open-cast mining. Deep bores, called shafts, have to be made to reach mineral deposits that lie at great depths. This is called shaft mining. Minerals that lie near the surface are simply dug out and are known as quarrying.