21-The process of taking out minerals from rocks buried under the earth surface is called ……………
(A) Mining
(B) Shafts
(C) Drilling
(D) Quarring
22- Minerals that lie at shallow depth are taken out by removing the surface layer of earth is ………………..
(A) Mining
(B) Open cast mining
(C) Shafts
(D) Drilling
23- Shafts are called ………….
(A) Earth surface
(B) Hole
(C) Deep Bores
(D) None of the above
24- Shafts have been made to reach mineral deposits that lie to great depths. This is called ……………..
(A) Deep bores
(B) Shafts
(C) Open cast mining
(D) Shaft Mining
25-For which of the following minerals can be extracting by deep bores?
(A) Petroleum
(B) Natural gas
(C) Iron ore
(D) Both A and B
26- Deep wells are bored to take out minerals. This is called ……………..
(A) Drilling
(B) Quarrying
(C) Mining
(D) Shafts
27- Minerals that lie near the surface and are simply dug out, by the process is known as ……………………..
(A) Mining
(B) Quarrying
(C) Shafts
(D) Drilling
28-Rocks from which minerals are mined are known as
(A) Rock
(B) Iron ores
(C) Ores
(D) None of the above
29- What is the main source of Mineral?
(A) Different types of glaciers
(B) Different types of valleys
(C) Different types of soils
(D) Different types of rocks
30- What type of minerals is/are found in igneous and metamorphic rocks?
(A) Metallic minerals
(B) Non-metallic minerals
(C) Sedimentary minerals
(D) All of the above
ANSWERS:
21-(A), 22-(B), 23-(C), 24-(D), 25-(D), 26-(A), 27-(B), 28-(C), 29-(D), 30-(A)