Geology [GATE (Graduate Aptitude Test in Engineering) Geology & Geophysics]: Questions 54 - 57 of 82

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Question 54

Geology
Classification and Geological Significance of Important Invertebrates

Appeared in Year: 2014

Question

MCQ▾

From the list of planktic foraminifera below, the pair having a supplementary sutural aperture is (Carry two marks each)

(P) Globigerina

(Q) Globorotalia

(R) Globigerinoides

(S) Orbulina

Choices

Choice (4)Response

a.

P, Q

b.

Q, R

c.

R, S

d.

P, R

Question 55

Edit

Appeared in Year: 2014

Write in Short

Short Answer▾

Metal content (in metric tons) of an ore having specific gravity and assay values of 2.86 and 1.49 % respectively in a mining block 40 m long, 30 m width and with an average thickness of 2.13 m is ________. (Carry two marks each)

Question 56

Appeared in Year: 2014

Question

MCQ▾

Which one of the following is the best suited mining method for a low-dipping, tabular-shaped, hard and compact ore body with 2 to 2.5 m thickness sandwiched between hard and compact roof and floor rock? (Carry two marks each)

Choices

Choice (4)Response

a.

Caving method

b.

Open stope method

c.

Cut and fill method

d.

Shrinkage stope method

Passage

The figures P and Q represent schematic binary phase diagrams for solid – melt and sub solidus relations in temperature (T) – composition (X) space.

Solid – Melt and Sub Solidus Relations in Temperature

Question 57 (1 of 2 Based on Passage)

Geology
Binary and Ternary Phase Diagrams

Question

MCQ▾

Choose the correct statement?

Choices

Choice (4)Response

a.

Solvus is absent in both P and Q

b.

Solvus occurs in both P and Q

c.

Solvus occurs in Q but not in P

d.

Solvus occurs in P but not in Q

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