List of top Geology Questions

Which of the following rock structure is/are fold (S) ?

A current of 2 A passes through a cylindrical rod with uniform cross-sectional area of 4 m² and resistivity of 100 Ω-m. The magnitude of the electric field (E) measured along the length of the rod in V/m is _____(in integer).

A confined aquifer with a uniform saturated thickness of 10 m has hydraulic conductivity of 10-2 cm/s. Considering a steady flow, the transmissivity of the aquifer in m²/day is (rounded off to one decimal place).

Assume heat producing elements are uniformly distributed within a 16 km thick layer in the crust in a heat flow province. Given that the surface heat flow and reduced heat flow are 54 mW/m² and 22 mW/m², respectively, the radiogenic heat production in the given crustal layer in uW/m3 is_____.(in integer).

Match the minerals in Group-I with the corresponding cleavage types in Group-II.

	Group-I		Group-II
P	Diopside	1	Cubic
Q	Galena	2	Octahedral
R	Calcite	3	Prismatic
S	Fluorite	4	Rhombohedral

Which one of the following lineations can be observed on a foliation with an attitude 210°, 40° NW?

The composition of which one of the following reservoirs closely matches with that of iron meteorites?

A cylindrical sample of granite (diameter = 54.7 mm; length = 137 mm) shows a linear relationship between axial stress and axial strain under uniaxial compression up to the peak stress level at which the specimen fails. If the uniaxial compressive strength of this sample is 200 MPa and the axial strain corresponding to this peak stress is 0.005, the Young's modulus of the sample in GPa____ is (in integer).

Which of the following Epochs belong(s) to the Quaternary Period?

The given figure shows the ray path of a P-wave propagating through the Earth. Choose the CORRECT P-phase corresponding to the ray path.

Match the geophysical methods in Group-I with their associated physical properties in Group-II.

	Group-I		Group-II
P	Magnetic	1	Chargeability
Q	Gravity	2	Electrical conductivity
R	Magnetotelluric	3	Susceptibility
S	Induced Polarization	4	Density

Which one or more of the following minerals shows O:Si ratio of 4:1 in its silicate structure?

The number of planes of symmetry in a tetrahedron is

Which one of the following is an ultramafic rock?

The given figure depicts an array used in DC resistivity surveys, where the current electrodes are denoted by C1 and C2, and potential electrodes by P1 and P2. If all the electrodes are equally spaced, then the given array corresponds to which one of the following configurations?

Which of the following hydrocarbon fields is/are located in the western offshore of India?

Which one of the following logging tools is used to measure the diameter of a borehole?

Gold is being produced from which one of the following mines in India?

The Earth's magnetic field originates from convection in which one of the following layers?

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

In the given isobaric binary temperature-composition (T-X) phase diagram involving solids A and B, the fraction of melt remaining at point Q for a magma having initial composition P will be _______. (Round off to one decimal place)

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)

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)

A rock element during deformation, experienced a pressure change of $5×10^4 N/m^2$, due to which its volume changed from 4 cm3 to 3.9 cm3. The bulk modulus of the rock is ________ ×$10^6 N/m^2$. (In integer)

A partially saturated soil sample has a volume of 1200 cc. The volume of water present in the sample is 300 cc. The mass of solid in the sample is 1908 g and the particle density is 2.65 g/cc. The porosity (n) of the soil sample is _______ %. (In integer)