Below the 100 Questions of Civil Engineering, which were asked in SKUAST Civil Engineer Civil (post code: 71) which were held on 29-09-2024.
Question 01.
what is the main role of clarifier in sewage treatment?
Previously Asked in : SKUAST Civil Engineer Civil (post code: 71) ||
To separate solids from liquids
To provide a platform for biological growth
To add chemicals to the sewage
To filter out large debris
Solution (Detailed Solution Below) click here
Option To separate solids from liquids is correct
Detailed Solution :
The main role of a clarifier in sewage treatment is to separate suspended solids from liquid effluent through sedimentation.
This process helps to improve water quality and ensure that the water meets regulatory standards for discharge
some other roles of a clarifier in sewage treatment:
- Removes floating matter
- Produces sludge
- Stabilizes flow
Correct option is: To separate solids from liquids
Question 02.
A major disadvantage of using chlorine for disinfection in sewage treatment is that
Previously Asked in : SKUAST Civil Engineer Civil (post code: 71) ||
It is ineffective against viruses
It can form harmful by-products
It does not kill bacteria
It is too expensive to use
Solution (Detailed Solution Below) click here
Option It can form harmful by-products is correct.
Detailed Solution :
Advantages of Chlorination of Water
- Kills harmful and pathogenic microorganisms.
- Prevents waterborne diseases.
- Maintains water quality during distribution.
- Provides residual protection.
- Cost-effective water treatment method.
Disadvantages of Chlorination of Water
- Unpleasant taste and odour.
- Formation of potentially harmful disinfection byproducts.
- Allergic reactions in some individuals.
- Corrosive to certain materials and equipment.
- Limited effectiveness against some parasites and viruses.
Question 03.
Which analytical method is commonly used to measure and analyze particulate matter in ambient air samples?
Previously Asked in : SKUAST Civil Engineer Civil (post code: 71) ||
Differential Optical Absorption
High-Performance Liquid Spectrometry (HPLC)
Scanning Electron Microscopy (SEM)
Ga Chromatography-Mass (GC MS)
DOAS
Solution (Detailed Solution Below) click here
option Scanning Electron Microscopy (SEM) is correct (Detail solution is below)
Detailed Solution :
Scanning Electron Microscopy (SEM) is one of the most useful techniques of examination of PM in environmental samples involving air.
Scanning Electron Microscopy (SEM) allows to study the form of particles and their elemental content.
This method has an advantage in producing images that are of high resolution for both the dimensions of the particles and their surface structures.
In the case of Scanning Electron Microscopy, it utilizes the appropriate focused electron beam to bombard the particulate matter as its distinguishing vessel.
This channel produces secondary electrons from the particulate matter which is accessed by the image of the sample that looks for the interaction with the particulate matter. Additionally, energy dispersive x-ray
Question 04.
Which of the following noise metrics is most commonly used to assess long-term exposure to environmental noise and its impact on human health
Previously Asked in : SKUAST Civil Engineer Civil (post code: 71) ||
Peak sound level
Sound exposure level
Equivalent continuous noise level
Day-night Average sound level
Solution (Detailed Solution Below) click here
option Day-night Average sound level is correct
Question 05.
Which of the following noise metrics is most commonly used to assess long-term exposure to environmental noise and its impact on human health
Previously Asked in : SKUAST Civil Engineer Civil (post code: 71) ||
Peak sound level
Day-night Average sound level
Sound exposure level
Equivalent continuous noise level
Answer
Option Day-night Average sound level is correct
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Question 06.
Question 07.
Question 08.
Learn more : Gate syllabus for Civil Engineering
Question 09.
Question 10.
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