Recent questions tagged gatees-2025

​​​At a pressure of $1$ atmosphere and temperature of $25^{\circ} \mathrm{C}$, $365 \mu \mathrm{~g} \mathrm{~m}{ }^{-3}$ of a pollutant corresponds to mixing ratio of $13...

​​​​Which option gives the best control strategies for Dioxins and Furans in the flue gas emitted from waste incineration facilities?Avoid burning polystyrene (PS) and po...

​​​​​Choose the correct option(s) from the following regarding the solubility in waterWater is a polar molecule because of the asymmetric distribution of charge between t...

​​​If microbial growth occurs under substrate unlimited conditions, according to Monod's kinetics, choose the correct option(s) from the followingMicrobial growth follows...

​Choose the correct option(s) for removing solids from water.chlorinationcoagulation-flocculation-sedimentation followed by slow sand filtrationchlorination followed by a...

​​According to the Bio-Medical Waste Management Rules, $2016$, choose the correct option(s) from the followingBio-medical waste generated should be taken to a common bio-...

A residential family is considering two cities for relocation. The data related to pollutant exposure and associated health cost per year are given in the following figur...

The following is a system of linear equations$$\begin{array}{c} x-2 y+z=34 \\ 2 x+y+z=102 \\x+y-3 z=17\end{array}$$The value of $(x+y+z)$ is $\_\_\_\_\_\_$ (rounded off t...

The value of $\int_{0}^{\infty} \frac{\sin 4 x}{\pi x} d x$ is $\_\_\_\_\_\_$ (rounded off to two decimal places)

A tank has inflow, outflow and stirring mechanism. Initially, the tank holds $500 \: L$ of a brine solution of concentration $200 \mathrm{~g} / \mathrm{L}$. At $t=0$, an ...

Aerobic biomass has yield coefficient value of $0.4$ for glucose (molecular weight $= 180 \mathrm{~g} / \mathrm{mole}$) substrate. Bacteria is represented as $\mathrm{C}_...

The following figure (not to scale) depicts a rainfall hyetograph for a storm over a catchmentIf the storm produced a direct runoff of $12.5 \: \mathrm{mm}$, then the $\p...

The following table and figure (not to scale) show characteristics of a catchment$$\begin{array}{|c|c|c|c|} \hline \text{Sub-} & \text{Area} &\text{Runoff} & \text{Time ...

A homogeneous isotropic confined aquifer of uniform thickness $30 \: \mathrm{m}$ has hydraulic conductivity of $5 \mathrm{~m} / \mathrm{day}$ and porosity of $0.3$. There...

A pipe line $\boldsymbol{O P} \boldsymbol{Q} \boldsymbol{R}$ branches into three pipes $\boldsymbol{X}, \boldsymbol{Y}$, and $\boldsymbol{Z}$ between points $\boldsymbol{...

A circular sewer pipe, having Manning's coefficient $(n)$ of $0.01$, is laid at a bed slope of $1: 100$. If it is flowing $80 \%$ full for a discharge of $2 \mathrm{~m}^{...

You conducted a batch experiment in the lab for $10$ minutes to degrade a toxic compound, which follows first order kinetics. The compound degrades from $2 \times 10^{-3}...

A common effluent treatment plant with a capacity of $2$ million litres per day (MLD) employs reverse osmosis (RO) for water reuse. The RO unit removes $95 \%$ of the tot...

A boiler burns coal at a rate of $1 \mathrm{~kg} / \mathrm{s}$. If the coal has $3 \%$ sulfur content, assuming that there is no sulfur in ash, $\mathrm{SO}_{2}$ emitted ...

A particle dispersoid has $1510$ spherical particles of uniform density. An air purifier is proposed to be used to remove these particles. The diameter specific number of...