Question

Read the following statements related to ‘surface mining’ carefully and choose the correct option:

1. It is the cheapest and the safest way of mining minerals.
2. Its output is large and rapid.
3. It is used to extract minerals from deeper part.
4. It is also known as open cast mining.

पर्याय

• Only i, ii, and iii are correct.

• Only i, iii and iv are correct.

• Only i, ii and iv are correct.

• Only ii, iii and iv are correct.

Answer 1

Only i, ii and iv are correct.

Explanation:

Surface mining, often known as open-cast mining, is a low-cost and relatively safe method of obtaining minerals from the earth’s surface. It ensures high output and speedy production by mining large amounts of minerals quickly. Because it does not require deep excavation, it is regarded as the most cost-effective and safest mining technique.