Geology Questions and Answers
81- Where is the great basalt plateau occur?
(A) Scotland
(B) Greenland
(C) Western Isles
(D) Madgascar
82- Among the following group which one is common wall rock alteration product.
(A) Anorthosite
(B) Carbonatite
(C) Nepheline
(D) Syenite
83- Phenacite is the type mineral for which of the following crystal classes?
(A) Trigonal class of Hexagonal system
(B) Rhombohedral Hemimorphic class of Hexagonal system
(C) Rhombohedral class of Hexagonal system
(D) Tri-rhombohedral class of Hexagonal system
84- The minerals that form natural solid solutions in each other and at determined the lower temperature unmix to yield intergrowth is called
(A) Liquid inclusion
(B) Exsolution
(C) Recrystallization
(D) Dissociation
85- The alteration takes place around. the margins of crystals with the presence and retention of abundant water in soda rich basic magma this process called as
(A) Lit – Par – Lit gneiss process
(B) Analcitisation
(C) Migmatite Process
(D) Albitisation
86- Copper ores are divided into four large groups find out the correct sequence
(A) Complex – Sulphide – Sulphate – Oxidised
(B) Native – Sulphide – Oxidised – Complex
(C) Oxidised – Nitrate – Sulphide – Sulphate
(D) Sulphide – Carbonate – Oxides – Nitrate
87- Diamond drilling
(A) Method for drilling unconsolidated strata
(B) Drilling method to investigate sub surface conditions
(C) Method for drilling large diameter hole
(D) With compressed air instead of mud
88- Good homes bf bauxite deposits are called
(A) Lets unconsolidated low level surface layers
(B) Lenses under some soil cover
(C) The high plateau of our peninsula. The plateau at an altitude of 900 to 1000 mts are regarded
(D) The low altitude of 100 to 200 mts regarded
89- Artificial rainfall is made by
(A) Calcium powder and Ammonia gas
(B) Silver iodide and Dry Ice
(C) Silver iodide and H2SO4
(D) Dry Ice and HCl
90- In the zone of aeration the pores are filled up with
(A) Neither water nor air
(B) Both water and air
(C) Air only
(D) Water only
ANSWERS:
81-(B), 82-(B), 83-(D), 84-(B), 85-(B), 86-(B), 87-(B), 88-(C), 89-(B), 90-(C)