List of top Questions asked in GATE GG

A sample of 10 g coal yields 1 g of moisture, 2 g of ash and 5.6 g of volatile matter. The percentage of volatile matter content of the coal on dry ash-free basis is ________. \text{[round off to 1 decimal place]}

A soil sample shows an average beta count of 6.8 counts per minute (cpm) per gram of organic carbon. The \( \text{C}^{14} \) count rate from organic carbon of present day vegetation is 15.26 cpm/g. The age of the sample is ________ years. \text{[round off to 1 decimal place] (Half-life of \( \text{C}^{14} \) = 5370 years)}

A digital camera with a focal length of 150 mm is flown at a height of 3000 m over a flat terrain for taking aerial photographs. The scale of the aerial photograph is 1: ________. [in integer]

The following reaction occurs at 1 bar and 823 K. Grossular + Quartz = Anorthite + 2 Wollastonite

Using the above molar thermodynamic data, the calculated slope of the above reaction is ________ bar K\(^{-1}\). [round off to 2 decimal places]

Operating costs of an open cast gold mine are Rs. 4000/tonne. The recovery at the mill is 9%. At a gold price of Rs. 4550/g, the cutoff grade of gold calculated on the basis of operating cost is ________ g/tonne. \text{[round off to 2 decimal places]}

Match the following igneous textures in Group-I with their definitions in Group-II.

Match the Volcanogenic Massive Sulfide (VMS)-type deposits in Group-I with the dominant mineralized host rocks in Group-II.

The following diagram shows phase relations in a system consisting of components A and B at 1 bar pressure. If the initial composition of liquid is R, during cooling and crystallization of magma, which of the following statement(s) is/are CORRECT?

Which of the following systems tract(s) indicate regression?

Which of the following sedimentary feature(s) indicate(s) sub-aerial exposure of the depositional surface?

Which of the following statement(s) is/are correct?

The sand supply and the variability of wind direction result in different dune types. In the options below, choose the CORRECT pair of dune types marked I and II in the figure.

Which one of the following statements is CORRECT?

Identify the common metamorphic minerals labelled X and Y in the ACF diagram.

Which one of the following schematic P-T paths is characteristic for a rock metamorphosed in a subduction zone?

Which one of the following is the CORRECT statement regarding the ecology of bivalves?

On a fault surface with strike 320° and dip 55° NE, respectively, four sets of slickenslides were measured by a geologist. Given that the fault surface was measured correctly, the plunge and plunge direction of the lineation on the fault surface is

Match the following tectonic settings in Group-I with the corresponding examples in Group-II

Which of the following stratigraphic unit(s) of the Vindhyan Supergroup contain(s) commercially significant limestone deposit(s)?

The strike and dip of the axial plane of a reclined fold is 022° and 28° SE, respectively. The plunge direction (in whole circle bearing) of the axis of the reclined fold is ________ degrees. \text{[in integer]}

If the shrinkage factor of a crude oil is 0.7, its formation volume factor is ________. \text{[round off to 1 decimal place]}

The cross section of a river channel is approximated by a trapezium. The river has an average channel width of 40 m and average depth of 3 m. If the average flow speed is 2 m/s, the discharge rate is ________ m³/s. \text{[in integer]}

A mineral of uniform composition is cut into a wedge shape. The birefringence of the wedge section is 0.012. The retardation at 40 µm thickness of the wedge is ________ nm. \text{[in integer]}