List of top Questions asked in TS PGECET- 2026

In a mine ventilation system, the resistance of an airway is such that when air quantity is \(10~\mathrm{m^3/s}\), the pressure drop is \(100~\mathrm{Pa}\). What will be the pressure drop when the air quantity is increased to \(20~\mathrm{m^3/s}\)?
Quantity of air to be circulated to underground workings where \(150\) workers are employed in a largest shift and daily production is \(500\) t will be
In an underground coal mine, a fan delivers air through a cross-sectional area of \(5~\mathrm{m^2}\) with an average air velocity of \(4~\mathrm{m/s}\). What is the quantity of air circulated by the fan?
Which one of the following is used as an escape apparatus?
If the CO/CO\(_2\) deficiency ratio in a mine is \(2\%\), it indicates
The chemical Hopcalite is used in
The operating point of a mine fan is
If the wet bulb temperature of air at a particular place in a mine is \(31^\circ\mathrm{C}\), then the velocity of air in that place should be
Topsoil preservation in mine land reclamation is important because it
In mine water pollution control, sedimentation ponds primarily remove
The most effective method for controlling dust in haul roads of opencast mines is
The Gaussian plume model is primarily used to estimate
The permissible limit of \(\mathrm{PM}_{10}\) in ambient air (24-hour average) as per Central Pollution Control Board (CPCB) standards in industrial areas is
Acid Mine Drainage (AMD) is mainly caused due to oxidation of
As per Central Pollution Control Board guidelines, the permissible daytime noise level in residential areas is
The first step in Environmental Impact Assessment (EIA) process is
Resuing stoping method is adopted when the ore body is
Pocket and wing technique of pillar extraction is related to
For O.B. removal with shovel, the optimum size of the dumper depends on
The process of treating holes with chemicals in the cementation method is called
When a double-ended ranging drum shearer cuts coal in a longwall face,
A twin cable ropeway consists of
Axial thrust in a turbine pump acts
In Koepe winding, the overwind is prevented by
Depending upon the decreasing ability of surrounding rock to store strain energy in underground metal mining methods can be ordered as