GATE ES topic:environmental-engineering PYQs & Answers — Page 32

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topic:environmental-engineering

Questions 311–320 of 390. Imported answers require independent review unless marked reviewed.

Topic practice 390 questionsPage 32 of 39

Which of the following statement(s) is/are correct regarding National Green Tribunal (NGT) of India?

Your answerSelect all correct options. You can choose more than one.

NGT Act 2010 draws inspiration from the India's constitutional provision of Article 21 - Protection of life and personal liberty, which assures the citizens of India the right to a healthy environment.

A retired Judge of the Supreme Court, can be the Chairperson of the NGT.

NGT Act 2017 is based on the India's constitutional provision of Article 261 - Protection of Biodiversity and Environmental Protection, which bestows the citizens of India with duty to protect all abiotic and biotic components of the environment.

The NGT is mandated to make and endeavor for disposal of applications or appeals finally within 45 days of filing of the same.

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The area of the region (rounded off to one decimal place) enclosed between the curves

and

and between the lines

and

is ________ units.

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An individual has four different email accounts. 60% of emails come into his corporate account, 30% come into his gmail account and remaining 10% are equally divided into his yahoo and zoho accounts. Only 1% of the emails in his corporate accounts are spam, whereas corresponding percentages for gmail, yahoo and zoho accounts are 2%, 3% and 3%, respectively. Assuming that the same spam filter is used in all the email accounts, the probability (in percentage, rounded off to one decimal place) of having a randomly selected email as spam is __________.

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A solution has 0.01 mole/L zinc ions having pH of 6. Solubility product of zinc hydroxide is given as

(mole/L)³. Ignoring activity corrections, the ratio (rounded off to two decimal places) of reaction coefficient to solubility product would be __________.

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The Henry’s law constant of CO

M per atm in neutral water at 25°C. The dissolved CO

(i.e., CO

O) at equilibrium undergoes the following reactions.

O ⇌ H

+ HCO

(Equilibrium constant =

HCO

⇌ H

+ CO

(Equilibrium constant =

If ambient CO

concentration is 300 ppm, the total dissolved CO

(in μM, rounded off to one decimal place) is ________.

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An isolated storm of 3 hours occurred over a catchment area in the following manner:

% Catchment Area	-index (cm/hour)	Rainfall: 1 hour (cm)	Rainfall: 2 hour (cm)	Rainfall: 3 hour (cm)
15	0.5	0.4	2.5	1.6
35	1.0	0.8	3.0	2.1
50	0.8	0.6	2.6	1.9

Total rainfall excess (in cm, rounded off to one decimal place) over the catchment for the above storm is __________.

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Two reservoirs having a difference of 20 m in their water surface elevations are connected through a confined aquifer (thickness = 5 m, length = 2 km, hydraulic conductivity

m/s, and porosity

) as shown in the following figure (drawn not to scale).

Diagram for Environmental Science and Engineering question 57

If the Reservoir 1 is contaminated by a pollutant then the time (in days, rounded off to one decimal place) taken by the pollutant to reach to the Reservoir 2 under advection will be __________.

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A venturimeter along with a differential manometer was installed to measure flow in a water pipeline as shown in the following figure (not drawn to scale).

Diagram for Environmental Science and Engineering question 58

Taking specific weight of water as 9810 N/m

, the pressure difference (in Pa, rounded off to one decimal place) between point Q and P is __________.

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Two reservoirs having a difference of 10 m in their water surface elevations are connected by a pipeline (diameter = 10 cm, length = 50 m, and friction factor

). If the last 25 m length of the pipeline is replaced by a same material pipe of diameter 20 cm then neglecting minor losses the discharge (in %, rounded off to one decimal place) increase will be __________.

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The depth of flow (in m, rounded off to two decimal places) in a hydraulically efficient rectangular channel (n = 1/80) to carry a discharge of 64 m

/s at bed slope 0.01 is __________.

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GATE ES topic:environmental-engineering PYQs

Question 51

Question 52

Question 53

Question 54

Question 55

Question 56

Question 57

Question 58

Question 59

Question 60