Mineralogy - Common Section - Geology & Geophysics Previous Year Questions

1

2008 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2008

Which of the following minerals is harder than a knife blade?

A

Calcite

B

Fluorite

C

Gypsum

D

Quartz

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2

2008 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2008

An x-ray beam of wavelength \( \lambda = 1.541 \) Å is incident on a cubic crystal having lattice spacing of 4 Å. What will be its 2θ value (where θ is the glancing angle) on x-ray diffractogram?

A

11.10°

B

20.10°

C

22.20°

D

44.20°

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3

2011 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2011

Match the items in Group I with those in Group II

A

P-3, Q-5, R-1, S-2

B

P-3, Q-4, R-2, S-1

C

P-3, Q-4, R-1, S-2

D

P-2, Q-3, R-4, S-5

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4

2012 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2012

In Mohs' scale of hardness, how many minerals are of silicate composition?

A

4

B

5

C

6

D

7

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5

2013 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2013

The most abundant mineral in the Earth’s crust is

A

quartz

B

K-feldspar

C

biotite

D

garnet

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6

2013 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2013

Match the following items of Group I with those of Group II.

A

P – 3 ; Q – 2 ; R – 5 ; S – 1

B

P – 3 ; Q – 4 ; R – 1 ; S – 2

C

P – 3 ; Q – 4 ; R – 2 ; S – 1

D

P – 5 ; Q – 4 ; R – 3 ; S – 2

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7

2013 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2013

Select the correct garnet [(Ca,Fe,Mg,Mn)₃Al₂Si₃O₁₂] and clinopyroxene [Ca(FeMg)Si₂O₆] pair respectively.

A

II and III

B

II and IV

C

I and IV

D

I and III

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8

2025 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2025 [Session 1]

A sample contains 7 wt% CaO and 5 wt% MgO. The molar ratio of CaO to MgO in the sample is __________
(Round off to two decimal places)

Check answer

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9

2025 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2025 [Session 1]

Select the option that lists oxide minerals only.

A

Spinel, Corundum, Rutile

B

Olivine, Pyroxene, Magnetite

C

Apatite, Galena, Monazite

D

Fluorite, Halite, Calcite

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10

2025 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2025 [Session 2]

A sample contains 7 wt% CaO and 5 wt% MgO. The molar ratio of CaO to MgO in the sample is __________.
(Round off to two decimal places)

Check answer

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11

2018 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2018

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

A

P-2, Q-3, R-4, S-1

B

P-2, Q-4, R-1, S-3

C

P-4, Q-2, R-3, S-1

D

P-3, Q-1, R-4, S-2

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12

2023 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2023 [Session 1]

Which of the following is NOT an essential property of a mineral?

A

Natural occurrence

B

Regular internal structure

C

Fixed composition

D

Solid state

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13

2023 · Geology & Geophysics · Common Section · Mineralogy

Geology & Geophysics (GG) 2023 [Session 1]

The number of lattice points in a face-centered cubic unit cell is

A

1

B

2

C

3

D

4

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