Geology Model Test Paper

Geology Model Test Paper
Practice Paper Geology

Q.1: what is the normal interfacial angle in dodecahedron form of cubic system:
(a) 60°
(b) 45°
(c) 9O°
(d) 120°
Answer. (a)

Q.2: Gyroidal class belongs to:
(a) Isometric system.
(b) Tetragonal system.
(c) Hexagonal system.
(d) Orthorhombic system.
Answer. (a)

Q.3: Zircon mineral shows the combination of:
(a) Prism and First order pyramid.
(b) Prism and second order pyramid.
(c) Pyramids only.
(d) Basal pinacoid and prism.
Answer. (a)

Q.4: Mark the mineral which is not the example of Hexagonal system:
(a) Quartz.
(b) Tourmaline.
(c) Haematite.
(d) Topaz.
Answer. (d)


Q.5: ln orthorhombic system the ‘a’ axis is known as.... and the ‘b’ axis is known as
respectively:
(a) Macro axis and Brachy axis.
(b) Brachy axis and Macro axis.
(c) Macro both.
(d) Brachy both.
Answer. (b)

Q.6. Which mineral is not crystallised in Orthorhombic system:
(a) Sulphur.
(b) Staurolite.
(c) Augite.
(d) Andalusite.
Answer. (c)

Q7: ln monoclinic system the ‘b’ axis known as the.... and the ‘a’ axis known as….
Respectively:
(a) Ortho axis and clino axis.
(b) Clino axis and Ortho axis.
(c) Clino axis and Brachy axis.
(d) Ortho axis and Macro axis.
Answer. (a)

Q.8: The normal class of monoclinic system is:
(a) Barite type.
(b) Beryl type.
(c) Gypsum type.
(d) Aximite type.
Answer. (c)

Q.9: Orthorhombic system shows the plane of symmetry as:
(a) Axial only.
(b) Diagonal only.
(c) Axial and Diagonal.
(d) lndetermined.
Answer. (a)

Q.10: What will be the symbol of Macro dome:
(a) okl.
(b) hol.
(c) hkl.
(d) hko.
Answer. (b)

Q.11: What is the characteristic symmetry of Monoclinic system:
(a) 2 axis of ll fold.
(b) 1 axis of ll fold.
(c) 1 axis of Ill fold.
(d) 2 axis of IV fold.
Answer. (b)


Q.12: Mark the correct one regarding orientation of the triclinic crystal:
(a) Any axis is placed vertically.
(b) The longer lateral axis is made to extend downwards to the right.
(c) The front-rear axis downward to the front.
(d) All are correct.
Answer. (d)


Q13: All the forms of normal class of Triclinic system are:
(a) Pinacoids.
(b) Pedions.
(c) Prisms.
(d) Pyramids.
Answer. (a)

Q.14: Zonal crystals sometimes occur due to:
(a) Interruption in crystallization.
(b) Presence of some impurities.
(c) Presence of pigments at certain moments of crystallization.
(d) All the above.
Answer. (d)


Q.15: The two diameters of a stereographic projection representing the axes are always at:
(a) 45 degrees.
(b) 60 degrees.
(c) 90 degrees.
(d) 120 degrees.
Answer. (c)


Q.16: Twinned crystals are characterised by:
(a) Solid angle.
(b) Re-entrant angle.
(c) Extinction angle.
(d) None of these.
Answer. (b)

Q.17: Match the following:
I II
1. Carlsbad twin i. Twin plane (010)
2. Baveno twin ii. Twin plane (021)
3. Manebach twin iii. Twin plane (001)
4. Swallo-tails iv. Twin plane (100)

(a) 1-I, 2-ii, 3-iii, 4-iv
(b) 1-iii, 2-I, 3-ii, 4-iv
(c) 1-iv, 2-I, 3-iii, 4-ii
(d) 1-I, 2-iii, 3-iv, 4-ii
Answer. (a)

Q.18: Butterfly twinning is found in:
(a) Rutile.
(b) Gypsum.
(c) Aragonite.
(d) Pyrite.
Answer. (b)

Q.19: Geniculate-twinning is found in:
(a) Rutile.
(b) Gypsum.
(c) Pyrite.
(d) Staurolite.
Answer. (a)

Q.20: The Gnomonic projection to be derived from the:
(a) Horizontal projection.
(b) Spherical projection.
(c) lnclinal projection.
(d) None of these.
Answer. (b)

Q.21: Mark the correct statement:
(a) Twinned crystals consisting of same substance.
(b) Twinning produced due to crystal inter growth.
(b) One-half of the twinned crystal is produced by rotation of 180°
(d) All statements are correct.
Answer. (d)

Q.22: The cleavages in twinned crystals are:
(a) In same directions.
(b) ln different directions.
(c) In oblique direction of the twin plane.
(d) Parallel to the twin plane.
Answer. (b)

Q.23: Pericline twin is found in:
(a) Staurolite.
(b) Pyrite.
(c) Rutile.
(d) Plagioclare.
Answer. (d)


Q.24:Hurricanes of typhoons (tropical cyclones) develop and mature:
(a) Anywhere in the tropical zone.
(b) Over the land masses only.
(c) Over the Water bodies only.
(d) None of these.
Answer. (c)


Q.25: In tetragonal system, faces which are parallel to the vertical axis while meeting the
horizontal axes at unequal distances are known as :
(a) Prism of the first order.
(b) Pinacoid.
(c) Ditetragonal prism.
(d) Prism of the second order.
Answer. (c)