GATE (Graduate Aptitude Test in Engineering) Geology & Geophysics: Questions 134 - 138 of 158

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Question 134

Question

MCQ▾

Ca-montmorillonite is formed by the chemical weathering of

Choices

Choice (4)Response

a.

Forsterite

b.

Augite

c.

Calcite

d.

Orthoclase

Question 135

Determinative Mineralogy of Common Rock Forming Minerals
Edit

Appeared in Year: 2013

Write in Short

Short Answer▾

The number of hydrous minerals in the Mohs scale of hardness is ________.

Question 136

Question

Assertion-Reason▾

Assertion(Ꭺ)

Biaxial minerals can be pleochroic in three shades.

Reason(Ꭱ)

Biaxial minerals have three refractive indices.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

Question 137

Forms and Twinning

Appeared in Year: 2014

Question

MCQ▾

Which one of the following represents a closed crystallographic form? (Carry two marks each)

Choices

Choice (4)Response

a.

Hexagonal prism

b.

Ditetragonal prism

c.

Tetragonal pyramid

d.

Hexagonal dipyramid

Question 138

Appeared in Year: 2013

Question

Match List-Ⅰ List-Ⅱ▾

Match the minerals in Group I with its corresponding industrial application in Group II.

List-Ⅰ (Group I)List-Ⅱ (Group II)
(A)

Kaolinite

(i)

Asbestos

(B)

Rutile

(ii)

Lubricant

(C)

Serpentine

(iii)

Pigment

(D)

Graphite

(iv)

Cement

Choices

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

a.

  • (ii)
  • (iii)
  • (i)
  • (iv)

b.

  • (iv)
  • (iii)
  • (i)
  • (ii)

c.

  • (iii)
  • (iv)
  • (ii)
  • (i)

d.

  • (i)
  • (iv)
  • (ii)
  • (iii)

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