List of top Questions asked in GATE GE- 2026

Which of the following options is/are CORRECT in the context of line-area spatial relationship?
In general, trilateration is considered to be the principle of GNSS positioning. Which other surveying principle describes GNSS positioning?
Buffering operation on a point or a line results in a ________.
Charity : P :: Retaliation : Q

Choose the appropriate pair of words P and Q that fit the analogy.
In the context of GIS, select the CORRECT option that shows the match between attribute and data scale.

AttributeData scale
(P) 23 °C(1) Nominal
(Q) Woodland(2) Interval
(R) Kilogram(3) Ordinal
(S) Small(4) Ratio
While implementing the digital Laplacian filter mask, which of the following is/are the possible value(s) of the center pixel?
In GNSS positioning, the cycle slips are the most detrimental for estimating ________.
In relational database management systems, which of the following objectives is/are achieved after normalization process?
Which of the following options is/are INCORRECT?
Which one of the coordinate pairs represents the satellite orbit in the skyplot of the GNSS constellations?
In the triangulation network shown in the figure, \(b\) and \(g\) are the observed lengths of the baselines, while 1 to 18 are the observed interior angles. The number of redundant observations is __________ (Answer in integer).
Power of a statistical test is the probability of rejecting the null hypothesis when the alternate hypothesis is true.

Which of the following statements is/are CORRECT?
In a group of students, 10 students like Mathematics, 12 students like English, 4 students like both Mathematics and English, and 6 students like neither Mathematics nor English. The number of students in the group is ____
An 8-bit remote sensing image has brightness values ranging from 24 to 120. While applying the minimum-maximum contrast stretch, which of the following statements is/are CORRECT?
For three circular regions, labeled as P, Q and R, shown in the figure, select the Boolean operator, which returns the shaded area.
The flying height of an aircraft above the base of a building is 500 m. In the nominally vertical aerial photograph, the radial distance from the principal point to the top of the building is 90 mm. The photo size is 230 mm × 230 mm. The relief displacement of the building is 6 mm.
The estimated height of the building is _______ m (Rounded off to the nearest integer).
A parallax bar can be used to measure ____________ while viewing the two photos stereoscopically.
It is needed to establish the coordinates of a station A. Two stations B and C are available whose coordinates are given in the table.
Length of line CA = 1212.38 m; \(\angle BCA = 64^\circ\).
The Easting of station A is ______ m (Rounded off to two decimal places).
Assume station A lies to the west of the traverse line BC.
StationEasting (m)Northing (m)
B11054.099484.37
C10827.6210112.15
For a proper stereoscopic viewing, the stereopair should be oriented in such a way that the flight line of each photo lies ___________.
An oblique aerial photograph of a cricket stadium is taken which includes two linear practice pitches (p and q). The length of both the pitches measured on ground is \( 15\ \text{m} \). The dimension of the image is \( 230\ \text{mm} \times 230\ \text{mm} \), while the photo lengths of p and q are \( 5\ \text{mm} \) and \( 15\ \text{mm} \), respectively.

What are the photo scales for p and q, respectively?
The angular misclosure of the closed-loop traverse shown in the figure is ______ ° (Answer in decimal degrees and rounded off to three decimal places).
For a camera with focal length \( 150\ \text{mm} \) and a \( 30\ \text{cm} \times 30\ \text{cm} \) format size, what height above ground (in meters) is necessary for a vertical photograph to cover an area of \( 9\ \text{km}^2 \)?
Which of the following errors is/are eliminated by taking both left and right face observations in a theodolite?
In a triangulation exercise, the horizontal distance between two points P and Q was found to be 12380.56 m. The average elevation along the line PQ was 748.82 m above the reference ellipsoid. The reduced horizontal distance between P and Q over the reference ellipsoid is ______ m (Rounded off to two decimal places).
Consider the radius of Earth to be 6378 km.
The observations of a reciprocal levelling operation carried out from two stations A and B are given in the table. It is known that the instrument has collimation error. The correct staff reading over station B when the instrument is set very near to station A is ______ m (Rounded off to three decimal places). Assume all other errors are negligible.
Instrument set very near to stationStaff reading at A (m)Staff reading at B (m)
A1.2752.005
B1.0401.660