Environmental Engineering MCQs with Answers & Solutions — Page 2

Which one of the following is one of the objects of water treatment?Water Treatment

Which one of the following aspects should be considered at the time of final selection of sewage treatment plant?Sewerage Systems

A completely mixed activated process is to be used to treat wastewater flow of 500 m³/hr having soluble BOD₅ of 250 mg/L. If the concentration of…Wastewater Treatment

The land treatment of sewage is suitable, whenDisposal of Sewage Effluents

The excessive acidity or alkalinity of the particular wastewater is neutralized by adding alkali or acid and this is achieved inWastewater Treatment

Which one of the following is an aerobic method of decomposing solid waste?Solid Waste Management

Which one of the following lists identifies the wastes from common manufacturing and industrial process, such as solvents that have been used in…Solid Waste Management

When once a pocket of smoke, containing air pollutants, is released into the atmosphere from a source like an automobile or a factory chimney, it…Air Pollution

Statement (I): The rainwater collection for direct use can be practiced by collecting the water coming down from the roof into a storage tank of…Water Treatment

The suitable method for forecasting population for a young and a rapidly developing city isWater Demand Estimation

The true colour of water is measured onWater Quality Parameters

The bacteria which survive in the absence of oxygen are calledWater-Borne Pathogens

The most significant primary gaseous pollutant found in vehicular emissions isAir Pollution

The poisonous gas responsible for causing the catastrophic Bhopal gas tragedy in 1984 in India wasAir Pollution

The permissible Respirable Suspended Particulate Matter (RSPM) ambient air quality for residential areas in India isAir Pollution

The ozone layer thickness is measured inAir Pollution

EIA stands forEnvironmental Impact Assessment

During the EIA process under Indian EIA Notification 2006, no public consultation is required forEnvironmental Impact Assessment

Environmental clearance for construction projects is required under which legislation in India?Environmental Impact Assessment

In a water treatment plant, 'Plain sedimentation' process is used for removingWater Treatment

The flow velocity of water in a sedimentation tank is generally kept asWater Treatment

Which of the following statement(s) is / are true for a Slow Sand Filter? i. Water entering the slow sand filter should not have been treated by…Water Treatment

If a water treatment plant has to treat 100 million litres of water per day, then the number of Rapid Gravity Filters required would be approximatelyWater Treatment

Which of the statements are true for a Rapid Gravity Filter? i. The amount of water required for washing a rapid gravity filter is around 2-5 per…Water Treatment

The Air binding problem in a rapid gravity filter is because of the i. negative head ii. increase of water temperature as it passes through the…Water Treatment

As per BIS 10500-2012, Total hardness (as CaCO₃) in drinking water should not exceedWater Quality Parameters

As per BIS 10500-2012, for which of the parameters the 'Acceptable Limit' and 'Permissible limit in the absence of alternate sources' is the same? i.…Water Quality Parameters

In water intended for drinking, E.Coli or thermotolerant coliform bacteria should not be detected in a water sample of _____Water Quality Parameters

In context with the effectiveness of chlorine as a water disinfectant, choose the correct sequence in the descending order (i.e. 'from the most…Water Treatment

The colour of the chlorine gas which is used as a water disinfectant isWater Treatment

Which of the following measure(s) should be adopted when transporting the samples from the place of sampling to the laboratory? i. The samples should…Water Quality Parameters

Which of the following is not a reagent needed for estimating Oil and Grease present in wastewater?Wastewater Treatment

Which of the following is not a method of disinfecting the water? i. electro-katadyn process ii. by the use of iodine and bromine iii. by the use of…Water Treatment

In which zone of pollution in a river stream the Dissolved Oxygen level is minimum?Disposal of Sewage Effluents

Which one of the following is not correct with respect to the provision of freeboard in sewers? The freeboard will act as factor of safety against theSewerage Systems

Sludge recirculation is done in Activated Sludge Process toWastewater Treatment

Grit chambers are providedWastewater Treatment

The incorrect statement about inverted siphon is :Sewerage Systems

The quantity of sludge with 95% moisture will be _______ that of 90% moisture for same volume of solidsWastewater Treatment

The extended aeration process hasWastewater Treatment

Benching in a manhole is theSewerage Systems

Maximum discharge in sewer is obtained when the depth of flow is ____ times the full depthSewerage Systems

Which of the following materials will have the highest non-scouring velocity in the sewer?Sewerage Systems

With reference to the Plume behavior, which of the following statements is correct for Fanning?Air Pollution

For the determination of Particulate Matter in air using a High Volume Air Sampler, which of the following corrections have to be done for the…Air Pollution

The odour of water can be determined byWater Quality Parameters

The Suitable Layout for a water supply distribution system, for towns having rectangular layout of roads.Water Distribution Systems

Temporary hardness in water is caused byWater Quality Parameters

According to Kuichling’s formula, the fire demand (Q) in liters/minute is given byWater Demand Estimation

The maximum permissible total dissolved solids content in water for domestic purposes should not exceedWater Quality Parameters