EARTH MCQS SET 04

EARTH MCQS SET 04

1. The Geological Mapping undertaken by GSI is on the scale of
a) 1:50,000
c) 1:40,000
b) 1:65,000
d) 1:25,000

2. Screening is an ore beneficiation process which takes advantage of the differences in
a) Size of the particles
b) Cleavage or fracture of the particles
c) Specific gravity of the particles
d) Hardness of the particles

3. Sorting of grains generally carried out by instruments called
a) Jaw crushers
c) Classifiers
b) Cone crushers
d) Vibrating screen

4. Water that is formed at the time of consolidation of magma is termed
a) Connate water
c) Meteoric water
b) Vadose water
d) Juvenile water

5. The underground water that occurs within the zone of aeration is called
a) Plutonic water
c) Vadose water
b) Meteoric water
d) Connate water

6. Which of the following is the most feebly magnetic among the following?
a) Quartz
b) Rutile
c) Magnesite
d) Galena

7. Permanent magnets are used in
a) Low-intensity magnetic separators
b) High-intensity magnetic separators
c) Wet magnetic separators
d) None of the above

8. A horizontal entry into an ore body is called
a) Adit
b) Shaft
c) Bench
d) Pit

9. Which of the following are more suitable for underground mining of ore bodies situated at great depths?
a) Horizontal shafts
c) Inclined shafts
b) Vertical shafts
d) None of the above

10. Which of the following is an underground mining method using artificially supported openings?
a) Open stoping
c) Room and pillar mining
b) Shrinkage opening
d) Longwall mining

ANSWERS:
1)a)1:50,000
2)a)Size of the particles
3)c)Classifiers
4)d)Juvenile water
5)c)Vadose water
6)d)Galena
7)a)Low-intensity magnetic separators
8)a)Adit
9)b)Vertical shafts
10)d)Longwall mining