Question

Read the following statements related to ‘surface mining’ carefully and choose the correct option:
i. It is the cheapest and the safest way of mining minerals.
ii. Its output is large and rapid.
iii. It is used to extract minerals from deeper part.
iv. It is also known as open cast mining.

• A. Only i, ii and iii are correct.
• B. Only i, iii and iv are correct.
• C. Only ii, iii and iv are correct.
• D. Only i, ii and iv are correct.

Hint:

Surface mining is ideal for minerals that are easily accessible from the surface, but it cannot reach deeper mineral deposits. Always pay attention to the terms like "open cast mining" for these techniques.

Answer 1

The Correct Option is C

Surface mining is primarily used for extracting minerals that are near the earth's surface. It is the most cost-effective and safest method compared to underground mining. However, statement iii is incorrect because surface mining is not used for extracting minerals from deeper parts of the earth. Instead, deeper mining methods are employed for that purpose. Additionally, surface mining is often referred to as open cast mining, which is reflected in statement iv.