List of top Questions asked in GATE GG

In a drainage basin, the number of the 1st, 2nd, 3rd, 4th and 5th order streams are 240, 40, 8, 2 and 1, respectively. The average of all calculated bifurcation ratios is ............... [round off to 2 decimal places]
In porphyry copper deposits, the order of alteration zones from the intrusive body outwards is:
Based on the three statements given below, choose the CORRECT option. Statement I: Gigantopithecus is a genus of the family Hominidae.
Statement II: Equus is a living genus of the family Equidae.
Statement III: Gomphotherium is a genus belonging to the order Proboscidea.
The ratio of bridging to non-bridging oxygen atoms in the amphibole structure is:
Which is the CORRECT sequence of ore minerals in their increasing order of reflectance?
Which of the following stratigraphic successions is/are arranged in CORRECT chronological order?
The total number of symmetry elements in the crystal class represented by the point group 4/m3 2/m is:
Based on the three statements given below, choose the CORRECT option. Statement I: Echinoids have water vascular system.
Statement II: Delthyrium and pedicle foramen are found in the brachial valve of brachiopods.
Statement III: Cardinal teeth, adductor muscles and chondrophore are found in bivalves.
Match the following fossil taxa in Group I with their corresponding features in Group II. \begin{center} \begin{tabular}{p{0.35\linewidth}p{0.35\linewidth}} Group I & Group II
P. Bryozoa & 1. Denticles
Q. Ostracoda & 2. Chamber
R. Foraminifera & 3. Carapace
S. Conodont & 4. Zooid
\end{tabular} \end{center}
The rate of spreading about a symmetric spreading center at the middle of a 4000 km wide sea is 40 mm/year. The spreading began $\underline{\hspace{1cm}}$ million years before present. [in integer]
The decay constant of a radioactive isotope is \(1.21\times 10^{-4}\ \text{year}^{-1}\). The half-life of the isotope is $\underline{\hspace{3cm}}$ years. [round off to nearest integer]
A vertical aerial photograph is obtained over flat terrain with a 30 cm focal-length camera lens from an altitude of 18288 m. If the width of a dolerite dyke on this vertical photograph is 2 mm, its actual width on the terrain is $\underline{\hspace{1cm}}$ m. [round off to 2 decimal places]
The amount of Fe in a sample of 25 g of pyrrhotite (FeS) is $\underline{\hspace{1cm}}$ g. (Atomic wt. of Fe = 55.85 and S = 32.06) [round off to 2 decimal places]
All the faces of an octahedron can be collectively symbolized by:
Which of the following is/are slope stabilization method(s)?
Shallow-focus earthquakes with tensional focal mechanism are characteristic of:
90% of the bulk Earth is constituted of Fe, Si, O and:
Rhodochrosite in hand specimen is most likely to be confused with certain varieties of:
The number of lattice points in a face-centered cubic (FCC) unit cell is:
In which one of the given mass extinction events, global cooling that resulted in glaciation and lowering of sea level, is considered as the major cause of extinction for more than 50% of marine fauna?
The dip and dip direction of the lee side of a straight crested ripple on modern sediments are found to be 15$^\circ$ and N10$^\circ$W, respectively. Considering unidirectional water movement, the flow direction is towards:
Processes of fossilization affecting an organism from its death to burial under sediments come under the study of:
Which of the following is NOT an essential property of a mineral?
Which one of the following mineral pairs shows solid solubility through coupled substitution of elements?
For the given figure, considering Pratt's model of isostatic compensation at the crust–mantle boundary, the crustal density ($\rho_1$) that explains 1.5 km deep lake is $\underline{\hspace{1cm}}$ kg/m$^3$. (Consider density of water $\rho_w = 1000$ kg/m$^3$) [round off to 2 decimal places] \begin{center} \includegraphics[width=0.5\textwidth]{05.jpeg} \end{center}