1. Ionosphere is the: ?

solid part of the earth

lowermost atmospheric zone

uppermost atmospheric zone

none of the above

Answer: uppermost atmospheric zone

Explanation:


2. The idea of the wandering continents was first pictured by Wagner (1912) in his: ?

convection current hypothesis

planetesimal Hypothesis

continental drift theory

none of the above

Answer: continental drift theory

Explanation:


3. A mineral may sometimes show a definite and characteristic arrangement in its outer appearance or physical shape which is expressed by the form "structure". Gypsum, as such, has got a ....... structure. ?

bladed

fibrous

reniform

granular

Answer: fibrous

Explanation:


4. The maximum angle of slope of a bed (or layer of rock) with the horizontal is known as: ?

dip

strike

bedding

none of the above

Answer: dip

Explanation:


5. The most suitable road material out of the following would be: ?

coarse-grained igneous rocks

volcanic rocks

plutonic rocks

hypabyssal rocks

Answer: volcanic rocks

Explanation:


6. Sedimentary rocks resulting from the accumulation of plant & animal remains are: ?

gypsum & magnesite

sand & gravel

limestone, chalk, & shale

all the above

Answer: limestone, chalk, & shale

Explanation:


7. Petrology confines itself to the study of the: ?

petroleum products

formation of various groups of rocks & their compositions

features of the surface of the earth

none of the above

Answer: none of the above

Explanation:


8. A great majority of folds are modifications of the simple types known as anticlines and synclines. An anticline is a fold in which: ?

the strata is up arched (i.e. it becomes convex upwards)

the older rocks usually occupy a position in the interior (or core of the curvature)

all the above

none of the above

Answer: all the above

Explanation:


9. Specific gravity of Dolomite is about: ?

1.95

2.85

3.20

none of the above

Answer: 2.85

Explanation:


10. Pegmatite is a: ?

intrusive igneous

extrusive igneous rock

sedimentary rock

metamorphic rock

Answer: intrusive igneous

Explanation: