Environmental Engineering MCQs with Answers & Solutions

Consider the following statements regarding water distribution systems 1. A gridiron distribution network provides multiple flow paths between supply…Water Distribution Systems

Consider the following statements regarding water demand estimation 1. Per capita water demand varies with climatic conditions and living standards.…Water Demand Estimation

Consider the following requirements 1. Removing all the impurities 2. Tapping the water throughout the year 3. Getting water free from suspended and…Water Intake Structures

For an infrastructure project in India, Environmental Clearance (EC) is mandatory under the EIA Notification. The scoping stage in the EC process…Environmental Impact Assessment

If the methyl orange alkalinity of water equals or exceeds total hardness, all of the hardness isWater Quality Parameters

Which of the following statements is not correct?Water Quality Parameters

The analysis results of a raw water sample are provided below Turbidity: 5 mg/L pH: 7.4 Fluorides: 2.5 mg/L Total Hardness: 300 mg/L Iron: 3.0Water Quality Parameters

The design parameter for flocculation is given by a dimensionless number Gt, where G is the velocity gradient and t is the detention time. Values of…Water Treatment

The Sludge Volume Index (SVI) representsWastewater Treatment

When are drop manholes provided in a sewerage system?Sewerage Systems

When sewage enters a flowing river, the rapid depletion of dissolved oxygen is due toDisposal of Sewage Effluents

What is the function of Aerobic Biological Attached Growth Process in waste water treatment?Wastewater Treatment

The loading rate in an activated sludge plant can be expressed using which of the following parameters? 1. Aeration period or hydraulic retention…Wastewater Treatment

Which of the following statements is/are TRUE for the Refuse-Derived Fuel (RDF) in the context of Municipal Solid Waste (MSW) management?Solid Waste Management

The calorific value of solid waste representsSolid Waste Management

Which of the following statements related to C/N (Carbon/Nitrogen) ratio is not correct?Solid Waste Management

Which of the following statements related to beneficial utilization of wastes is not correct?Solid Waste Management

Consider the following regarding solid waste management planning 1. Waste generation rate is an important parameter in designing waste management…Solid Waste Management

In Bangalore and Indore, the processes of composting are classified to which of the following?Solid Waste Management

Which one of the following statements is TRUE for Greenhouse Gas (GHG) in the atmosphere?Air Pollution

Fanning type of plume behaviour takes place whenAir Pollution

Assertion (A): Separate sewer systems are often preferred in modern urban planning. Reason (R): Separate systems reduce the hydraulic load on…Sewerage Systems

What is the primary function of trickling filter in wastewater treatment?Wastewater Treatment

A city supplies of 15,000 m³ of water per day treated with chlorine with dosage of 0.5 ppm. For this purpose, the requirement of 25% bleaching powder…Water Treatment

If total hardness of water is greater than its total alkalinity, then carbonate hardness will be equal toWater Quality Parameters

The type of valve which is provided to control the flow of water in the distribution system at street corners and where the pipe lines intersect isWater Distribution Systems

To test Chemical Oxygen Demand (C.O.D.) of sewage, organic matter is oxidized by potassium dichromate in the presence ofWater Quality Parameters

The Gaussian model is used for the prediction of the concentration of pollutants fromAir Pollution

Which type of noise can be abated by providing lining on walls and ceiling with sound absorbing materials?Noise Pollution

Oil and grease from sewage is removed byWastewater Treatment

What is the main objective of primary treatment in wastewater treatment?Wastewater Treatment

What is the BOD₅ of a water sample for the given data ? Temperature of sample = 16°C; Initial dissolved oxygen at corresponding temperature = 10…Water Quality Parameters

As per the Manual on Water Supply and Treatment, Ministry of Urban Development, GOI, the fire demand for 1 lakh population is :Water Demand Estimation

A wastewater is expected to have BOD₃²⁷ of about 300 mg/L. The initial DO of dilution water is 8·5 mg/L. The minimum DO that should remain is 1·5…Water Quality Parameters

Raw primary and waste activated sludge containing 4% solids is to be anaerobically digested at a loading of 3 kg/(m³.day). The total sludge produced…Wastewater Treatment

Which of the following statements are correct regarding sound in environmental engineering ? 1. Sound Intensity can be defined as the time-weighted…Noise Pollution

Match the following lists : List-I: P. IS 4954:1968 Q. IS 3028:1998 R. IS 4758:1968 S. IS 3483:1965 List-II: 1. Measurement of noise emitted by…Noise Pollution

Which of the following statements are correct regarding landfills ? 1. The landfill must be proximate to wastewater treatment facilities. 2.…Solid Waste Management

Match the following lists : List-I: P. Bacteria Q. Virus R. Protozoa S. Helminths List-II: 1. Entamoeba histolytica 2. Ancylostoma duodenale 3.…Water-Borne Pathogens

As per IS 10500:2012, the value of Nitrate in drinking water should be in the range of :Water Quality Parameters

A sample of sludge has an SS concentration of 4000 mg/L. After settling for 30 minutes in a 1 L cylinder, the sludge occupies 400 mL. The Sludge…Wastewater Treatment

Identify the correct sequence of treatment flow scheme for groundwater with low mineral content but presence of objectionable gases :Water Treatment

In solid waste management, compaction ratio is defined as :Solid Waste Management

Consider the following statements regarding polluted water resources : 1. If the polluted water is discharged directly to the recipient (such as…Disposal of Sewage Effluents

A power plant has a stack with a diameter of 2 m and emits gases with a stack exit velocity of 15 m/s and a heat emission rate of 4900 kJ/s. The wind…Air Pollution

Consider the following data : Weight of a dish = 48·6212 g 100 mL of sample is placed in the dish and evaporated. The new weight of the dish and dry…Water Quality Parameters

While laying or designing the water distribution system, attempts should be made to keep theWater Distribution Systems

Which one of the following factors should be kept in view while fixing the design period for waterworks?Water Demand Estimation

Which one of the following is the function of the Central Board set up by the Government of India for water pollution prevention?Water Quality Parameters

Which of the following measures is/are to be adopted against the water pollution? 1. The sewage before discharging into the water body may need not…Water Quality Parameters