List of top Geology Questions

An aquifer has a cross-sectional area of 10 $m^2$ and a hydraulic conductivity of 0.25 cm/s. The volume of water that will flow per second through the aquifer for a hydraulic gradient of 0.04 is _____ $cm^3$. (Round off to three decimal places)

Glossopteris is found in which of the following formations?

The mole fraction of forsterite in olivine with MgO = 29.17 weight %, FeO = 34.65 weight % and $SiO_2$ = 36.18 weight % is _______ . (Round off to two decimal places) (Use molecular weight, in g/mol, of MgO = 40.31, FeO = 71.85 and $SiO_2$ = 60.00)

For an anisotropic crystal of thickness 0.04 mm and refractive indices of 1.636 and 1.486 along the slow and fast directions, respectively, the retardation produced is ______ nm. (In integer)

Which of the following fossil groups are from the Siwalik Group?

Clinopyroxene crystallizing from a basaltic magma has Sm concentration of 24 ppm. If the clinopyroxene-melt partition coefficient for Sm is 1.2, the concentration of Sm in the basaltic magma will be ______ ppm. (In integer)

The value of φ (phi) of a sediment grain having a diameter of 0.125 mm is ______ . (In integer)

In a mineral with formula $KAl_3Si_3O_{10}(F_{0.5}OH_x)$, the value of ‘x’ is ________ . (Round off to one decimal place)

Neutron-rich unstable nuclides undergo

An orebody contains pyrite and chalcopyrite in the same molar proportions. The percentage concentration of Cu in the ore will be ________. (Round off to the nearest integer) (Use atomic weight, in g/mol, of Cu = 63.55, Fe = 55.85, S = 32.06)

Which of the following is the correct decreasing order of abundance of elements in our solar system?

Match the minerals in Group I with their highest order of interference color in Group II (for 0.03 mm mineral thickness).

Group I	Group II
P. Sillimanite	1. First order
Q. Quartz	2. Second order
R. Muscovite	3. Greater than third order
S. Calcite	4. Third order variegated

The saturated thickness of an unconfined aquifer is defined by the distance between

The crystal form ‘dome’ contains

The mineral assemblage found in a granulite facies metabasalt is

Match the morphological features in Group I with the corresponding taxa in Group II.

Group I	Group II
P. Dissepiment	1. Echinodermata
Q. Delthyrium	2. Trilobita
R. Pygidium	3. Brachiopoda
S. Ambulacrum	4. Anthozoa

Match the geomorphic features in Group I with the corresponding environments in Group II.

Group I	Group II
P. Dreikanter	1. Glacial
Q. Cirque	2. Beach
R. Natural levee	3. Eolian
S. Berm	4. Fluvial

Match the sedimentary features/structures in Group I with the corresponding processes in Group II.

Group I	Group II
P. Stylolite	1. Liquefaction
Q. Pseudonodule	2. Diagenesis
R. Current crescent	3. Organo-sedimentary binding
S. Stromatolite	4. Scouring

Which of the following combinations are correctly matched?

Which of the following is the precursor of petroleum?

High drainage density is representative of a terrain with

The plate tectonic setting of Benioff-Wadati zone is

The area of a triangular block of a massive orebody is $1500 m^2$. If the thickness of the orebody is 5 m, 6 m and 7 m at the three corners of the triangular block, and the ore density is $2.5 tons/m^3$, the estimated ore reserve of the block is ______ tons. (In integer)

In a sequence of undeformed sedimentary rocks, younger rocks overlie older rocks. This conforms to the principle of

The mean flow velocity of water in an open channel having an average depth of 0.2 m, and with Froude Number 4, is ________ m/s. (Round off to one decimal place) (Use $g = 9.8 ms^{-2}$)