List of practice Questions

For effluents generated by a molasses-based distillery and wood-based pulp and paper industry, which of the following statement(s) is/are NOT correct?

PM$_{2.5}$ concentrations in ambient air can be measured using

Biodegradable wastes like vegetable peelings from kitchen are usually processed by composting techniques. Which of the following option(s) regarding the processing of biodegradable wastes is/are correct?

As per ‘Hazardous and Other Wastes (Management and Transboundary Movement) Rules, 2016’ of Govt. of India, the import of hazardous and other wastes from any country shall NOT be permitted for which of the following option(s)?

The Ministry of Environment, Forest and Climate Change (MoEF & CC), Govt. of India has published the Environment Impact Assessment (EIA) draft Notification 2020, intended to replace the existing EIA Notification 2006 under the Environment (Protection) Act, 1986. Which of the following is/are the key change(s) from existing regulation?

A river water sample has pH of 4 and suspended solids concentration of 100 mg/L. If alum is chosen as a coagulant, what will be the coagulation mechanism?

Which one of the following is most commonly used raw material in flue gas desulfurization units?

Leachate generated from a legacy municipal solid waste dumping site has to be collected and managed carefully. Which statement is correct for treatment of such leachate?

Which one of the following statements is correct regarding Global warming?

In context of ecosystems, which one of the following is NOT a correct statement?

Which one of the following statements correctly defines the concept of ‘Extended Producer’s Responsibility’?

Specific conductance is used in water analysis to indirectly estimate dissolved solids. The measurements used in the method account for

Ten litres of the sample was filtered through a membrane filter and the filter was transferred to solid agar media which supports growth of coliform organisms. After incubation at 37°C for 48 hours, the agar plates showed an average of 64 colonies per plate. What was the average concentration of coliform organisms (in CFU/ml) in the original water sample?

Reverse Transcriptase Polymerase Chain Reaction is an analytical procedure used in detection of pathogenic microorganisms. Which one of the following statements is NOT correct in this context?

Consider the following statements:
Statement 1: Goodrich method for reservoir routing is based on hydrologic flood routing method.
Statement 2: Muskingum method for channel routing is based on hydraulic flood routing method.
Which one of the following is correct?

The correct order of hydraulic conductivity for the geologic formations is

Centrifugal pumps with suction pipe (shown by solid arrow) and delivery pipe (shown by dotted arrow) are shown in the figures. Choose the option that gives the correct connection.

Carbon dioxide is used in recarbonation process. A solution has 1 mole/L supersaturated calcium carbonate. Estimated amount of carbon dioxide (in grams) needed to completely convert calcium carbonate to calcium ions in 1 litre solution is __________.

X is normally distributed with the following data (25.8, 36.6, 26.3, 21.8, 27.2). Select the correct statement about X ($t_{\text{crit},\alpha=0.05,4}=2.132$):

Assuming $s>0$, the Laplace transform for $f(x) = \sin(ax)$ is

Given $P$ is an $m\times n$ matrix, $Q$ is an $n\times l$ matrix, and $R$ and $S$ are $n\times n$ matrices. Consider:
Relationship 1: \quad $(PQ)^T = Q^T P^T$
Relationship 2: \quad $(RS)^{-1} = S^{-1} R^{-1}$
Which one of the following is correct?

Nylon-6,6 is obtained from:

For an isomerization reaction \( A \rightleftharpoons B \), the temperature dependence of the equilibrium constant is given by: \[ \log_e K = 4.0 - \frac{2000}{T} \] {The value of \( \Delta S^\circ \) at Hook is, therefore:}