List of top Questions asked in GATE ES

With reference to the gate shown in the figure, the gate will start opening automatically when the water level 'h' above the hinge is ________ m (rounded off to 2 decimal places).
With reference to the gate shown in the figure, the gate will start opening automatically when the water level 'h' above the hinge is
Ten cards in a pack are numbered as 1, 2, 3, . . .10. The probability of drawing a card with an even number or a number which is a multiple of 5 from the pack is
Hardness in water is NOT caused by ______
The maximum coordination number of \( \text{Sn}^{4+} \) is \(\_\_\_\_\)
Rod shaped bacterial cells are called _______.
Tuberculosis is predominantly caused by ________.
Which one of the following conversions belongs to nonsymbiotic nitrogen fixation?
Crown corrosion of reinforced cement concrete sewer is caused by ______
The processes of removal of particles in a rapid sand filter with their description is given in the table.
ProcessDescription
(i) StrainingP: Removes only particles in the water large enough to get caught in the pores of the filter
(ii) Sedimentation Q: Larger and heavier particles do not follow the fluid streamline around the sand grain and settle on the grain
(iii) Interception R: Particles that do follow the streamline, but are too large and are caught because they brush up against the sand grains
(iv) Diffusion S: Very small particles are experiencing Brownian motion and may collide with the sand grains by chance

Select the correct match.
The environmental temperature increases by 6°C/km with height at a particular location. The stability condition of the atmosphere at the location is ______,
As per the United Nations agenda for sustainable development adopted in September 2015, the number of Sustainable Development Goals (SDGs) _____ are year to achieve them is and the proposed target year to achieve them is ______.
Which one of the following is NOT a greenhouse gas?
As per the United Nations Environmental Program (UNEP) guidelines 2004, the maximum size of microplastics is ________.
The costliest functional element in an urban centralized Municipal Solid Waste management infrastructure for a typical Indian Tier I city is ________.
The eigen values of the matrix \(\begin{bmatrix}4 & 3 \\3 & 4 \end{bmatrix} \) are
If X is a vector, and A and B are linear operators; then the correct mathematical relationship(s) is/are
In the context of fluid flow, which of the following statement(s) is/are correct?
In a rectangular open channel, the flow is critical, and the flow depth is 2 m. Select the correct statement(s)
With respect to particle settling in wastewater treatment systems; the correct statement(s) is/are
The equipment that can be used to control particulate air pollution in an industrial unit is/are
Which is/are the secondary air pollutant(s)?
As per the Hazardous Waste (Management and Handling) Rules, 2016, of India, which is/are the characteristic(s) that must be exhibited by a waste to be classified as a "characteristic" hazardous waste?
$f(x) = x^3 – 4.5x^2 - 12x$ has a local maximum at x = ___________(an integer value) in the range x = − 2 to + 2
Consider the equation - $\farc{dy}{dx}- x^2 + e^x = 0;$ with y =1 at x = 0.
The value of y at x = 1 is _________. (rounded off to 2 decimal places).
Take the value of e (base of natural logarithm) as 2.7.
A municipal solid waste digester generates 1000 kg of methane gas. The volume of the tank needed to store this gas at 30°C and 3 atmospheric pressure is ________ liters (an integer value).
Use R=0.082 L-atm/mole-K, Atomic weights of C=12, and H=1