Geology [GATE (Graduate Aptitude Test in Engineering) Geology & Geophysics]: Questions 74 - 76 of 82

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Question 74

Appeared in Year: 2014

Question

MCQ▾

The uniaxial interference figure of a mineral given below shows the changes in the position of color bands when a mica plate is inserted in the accessory slot of the microscope as shown. The changes in the interference figure are due to (Carry two marks each)

The Uniaxial Interference Figure

Choices

Choice (4)Response

a.

Increase in retardation along the quadrants 1 and 3

b.

Decrease in retardation along the quadrants 1 and 3

c.

Increase in retardation along the quadrants 2 and 4

d.

Increase in retardation in all quadrants

Question 75

Geology
Binary and Ternary Phase Diagrams

Question

MCQ▾

Salinity of three different fluid inclusions in H2O-NaCl system is to be determined by “heating – freezing” experiments. The phase proportions of inclusions at room temperature are show

Salinity of Three Different Fluid Inclusions in H2O-NaCl Sys …

The salinity can be determined by

Choices

Choice (4)Response

a.

Heating of all p, q and r

b.

Freezing of p, heating of r

c.

Heating of p, freezing of q

d.

Heating of q, freezing of r

Question 76

Geology
Role of Geology in the Construction of Engineering Structures Including Dams

Question

Match List-Ⅰ List-Ⅱ▾

Match the items in Group I with those in Group II.

List-Ⅰ (Column I)List-Ⅱ (Column II)
(A)

Churching

(i)

Tunneling

(B)

Piping

(ii)

Earth dam

(C)

Pozzolan

(iii)

Concrete gravity dam

(D)

Curtain grouting

(iv)

Cement

Choices

Choice (4)Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iv)
  • (iii)
  • (i)
  • (ii)

b.

  • (iii)
  • (i)
  • (iv)
  • (ii)

c.

  • (ii)
  • (i)
  • (iii)
  • (iv)

d.

  • (i)
  • (ii)
  • (iv)
  • (iii)

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