21- In………………..rocks minerals are deposited in beds or layers.
(A) Sedimentary
(B) Igneous
(C) Metamorphic
(D) None of the above
22- Layers or beds in ……………rocks are formed due to deposition, accumulation and Concentration of minerals in horizontal strata.
(A) Igneous
(B) Sedimentary
(C) Metamorphic
(D) None of the above
23- Which of the following is an example of Sedimentary minerals?
(A) Gypsum
(B) Sodium salt
(C) Both
(D) None of the above
24- Which of the following is formed as a result of evaporation in arid region?
(A) Gold
(B) Copper
(C) Zinc
(D) Sodium Salt
25- Which of the following is best suitable example: formation that involves the decomposition of surface rock and removal of soluble constituents, leaving a residual mass of weathered material containing ore?
(A) Silver
(B) Zinc
(C) Copper
(D) Bauxite
26- Minerals that occurs as alluvial deposits in sands of valley floor and the base of hills these deposits are called………………
(A) Placer deposits
(B) Eroded deposits
(C) Water deposit
(D) None of the above
27-Gold, tin and silver are minerals that occurs as ……………….deposits and not eroded by water.
(A) Laterite
(B) Alluvial
(C) Sedimentary
(D) Igneous
28- Name the minerals that are derived from Ocean water?
(A) Bromine
(B) Common salt
(C) Both
(D) None of the above
29-Most of the minerals in India are nationalized and their extraction is possible only after obtaining due permission from………………
(A) High court
(B) District Government
(C) State Government
(D) Government of India
30- Coal mining in Jowai and Cherapunjee is done by family member in the form of a long narrow tunnel, known as………………..
(A) ‘Rat-Hole’ mining
(B) ‘Bat- Hole’ mining
(C) Narrow- Hole mining
(D) None of the above
ANSWERS:
21-(A), 22-(B), 23-(C), 24-(D), 25-(D), 26-(A), 27-(B), 28-(C), 29-(D), 30-(A)