Recent questions

In the design of air pollution control devices, size of the particles that are removed with $50 \%$ efficiency is termed as $\_\_\_\_$.mean sizemode sizecut sizemedian si...

The general atmospheric composition of gases in the decreasing order is $\_\_\_\_$.$\mathrm{N}_{2}>\mathrm{O}_{2}>\mathrm{CO}>\mathrm{CO}_{2}>\mathrm{NH}_{3}$$\mathrm{N}_...

Which ONE of the following options is NOT a parameter as a part of proximate analysis of municipal solid waste?Volatile matterAsh contentCarbon to nitrogen ratioMoisture ...

A species whose impact on an ecosystem is disproportionately large in comparison to its population is called $\_\_\_\_$ species.dominantkeystoneapex predatorendemic

Which ONE of the following principles is directly related to environmental compensation?Intergenerational equity principlePrecautionary principleSubsidiarity principlePol...

As per the United Nations General Assembly resolution adopted in $2015$ "Transforming Our World: The $2030$ Agenda for Sustainable Development", the number of sustainable...

Which ONE of the following options CORRECTLY matches the ISO series with their usages in environmental management system (EMS) given in the table?$$\begin{array}{|ll|ll|}...

Which of the following chemical reactions is/are related to smog formation in the troposphere?$\mathrm{CFCl}_{3}+h v \rightarrow \mathrm{CFCl}_{2}+\mathrm{Cl} \cdot$$\mat...

Which of the following processes is/are primarily used to remove the organic matter in sludge?DigestionIncinerationMagnetic separationWet-oxidation

Which of the following options is/are CORRECTLY listing the species included in Total Kjeldahl Nitrogen (TKN) estimation of an aqueous sample?Ammoniacal - $\text{N}$Nitri...

Which of the following statements is/are CORRECT in the context of hazardous waste management and its risk assessment?Risk is estimated based on the probability of an act...

Which of the following statements is/are TRUE about global warming?Interception of incoming solar radiation by greenhouse gases in earth's atmosphere is responsible for g...

Which of the following options is/are directly associated with the steps involved in carrying out life cycle assessment (LCA)?Determination of functional unitDefining goa...

A $6$-hour rainfall of $6$ cm at a station was found to have a return period of $40$ years.The probability that a $6$ -hour rainfall of this or larger magnitude will occu...

Water is flowing at the rate of $15 \mathrm{~m}^{3} / \mathrm{s}$ through a rectangular channel of $5$ $\mathrm{~m}$ width.If the acceleration due to gravity $(g)$ is $9....

A first-order ordinary differential equation is given as follows:$$\dfrac{d y}{d x}+x^{2} y=0$$Which ONE of the following options CORRECTLY represents the characteristics...

Consider the matrix $A=\left[\begin{array}{ccc}2 & 2 & 3 \\ 2 & 5 & 6 \\ 3 & 4 & 10\end{array}\right]$.Which ONE of the following options CORRECTLY lists the eigenvalues ...

Which ONE of the following options is CORRECT with respect to sequential breakdown of deoxyribonucleic acid (DNA) into lower-molecular weight compounds?Deoxyribonucleic a...

Which ONE of the following options CORRECTLY matches the Criteria Air Pollutants with measurement methods used in Continuous Ambient Air Quality Monitoring Stations (CAAQ...

Which ONE of the following options CORRECTLY matches the atmospheric stability conditions with plume conditions/ behaviours given in the table?$$\begin{array}{|l|l|}\hlin...