Agricultural Engineering-Agricultural Engineering MCQs Set/7 Sample Test,Sample questions

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Question: 
 Which of the following are the solid residues from incineration?

1.Slag, fly ash, APC

2.Klink, ash, BPC

3.Gas, slag, APC

4.Liquids, ash, slag

Question: 
Anaerobic digestion is generally applied to BOD wastes above ________ ppm.

1.3000

2.6000

3. 9000

4.12000

Question: 
Anaerobic treatment is mediated through _______

1.Enzyme catalysis

2.Enzyme

3.Chemical

4.Sulphur

Question: 
Bio filters are fed with effluent only after ____________

1.Initial settlement

2.Bio-accumulation

3.Bio-degradation

4.Bio-magnification

Question: 
Chemical precipitation is used in conjunction with neutralisation.

1.True

2.False

Question: 
Chemical precipitation makes the hazardous waste _________

1.Soluble

2.Insoluble

3. Volatile

4.Acidic

Question: 
Chemical precipitation treatment is effective in wastewater containing _______

1.Chemicals

2.Chloride

3.Toxic metals

4.Impurities

Question: 
Chemical precipitation treatment is user economic.

1.True

2.False

Question: 
Compensation for lower temperatures can be achieved by reducing hydraulic and organic loading rates thereby increasing _____________

1.Retention time

2.Mixing

3.Aeration

4.Sparging

Question: 
Effective preliminary treatment can also be used to remove the ____

1.Girt and rag

2.Carbon dioxide

3.Nutrients

4.Oxygen

Question: 
Evaporation of liquids from hazardous waste through multiple evaporator, distillation etc. is dependent on ________

1.Melting point

2.Freezing point

3.Boiling point

4.Vapour pressure

Question: 
Evaporation units may be operated without obtaining a permit if ________

1.Chemicals are used

2.Resins are associated

3.Unit is enclosed

4.Waste is reused

Question: 
Evaporator must have sufficient disc engaging space to achieve ________

1.Separation

2.Chemicals

3.Boiling

4.Pressure

Question: 
Ferrous materials are combustible.

1.True

2.False

Question: 
In the exposed lands, ______ are used to assist rotation during harsh weather conditions?

1.Wind vanes

2.Water sprayer

3.Flow bed

4.Motor drives

Question: 
Ion exchange is an irreversible process.

1.True

2.False

Question: 
Ion exchange is widely used to remove _________

1.Heavy metals

2.Toxic heavy metals

3.Minerals

4.Salts

Question: 
Mechanical mixing of waste ensures ________

1.Flash point

2.Even distribution

3.Hydrocarbon mixing

4.Less water requirement

Question: 
Most suitable treatment method for electroplating discharge is ____________

1.Reduction process

2.Ion exchange

3.Waste analysis

4.Chemical analysis

Question: 
Non-methanogenic and methane-producing organisms effect anaerobic treatment.

1.True

2.False

Question: 
Organic gas from condensation can be used as fuel.

1.True

2.False

Question: 
Precipitation by ___________ is widely used method for treating hazardous waste.

1.Calcium hydroxide

2.Sodium hydroxide

3.Potassium hydroxide

4.Lead oxide

Question: 
Residence time of waste in combustion zone is ________ seconds.

1.1

2.2

3.3

4.4

Question: 
Resins can remove specific substances in a waste solution.

1.True

2.False

Question: 
Sodium and potassium ions cause strong inhibition above ________ ppm.

1.10

2.100

3.1000

4.10000

Question: 
Soluble ions of heavy metals are toxic above _______ ppm in industrial waste.

1.1

2.2

3.3

4.4

Question: 
Steel tubes used in multiple effect evaporator are placed on surface.

1.True

2. False

Question: 
The environmental issue caused by chemical precipitation is _________

1.Chemical silt

2.Salts

3.Liquid matter

4.Degradation

Question: 
The gases produced from anaerobic degradation process are ________ and ________

1.Nitrogen, sulphur

2.Acetate, nitrate

3.Carbon, methane

4.Methane, sulphur

Question: 
The residues produced from evaporation treatment is _________

1.Less

2.More

3.Undetermined

4. No residue

Question: 
The temperature range for anaerobic process is ________ and ______ degree Celsius.

1.10-20, 20-30

2.32-37, 40-55

3.10-40, 40-55

4.10-50, 20-47

Question: 
The treatability of the hazardous waste depends upon ________ content.

1.Carbon

2.Hydrocarbon

3.Nitrate

4.Sulphur

Question: 
Thermal processing reduces hazard from waste.

1.True

2.False

Question: 
Thermal treatment technologies are differentiated by ___________

1.Type of grate

2.Chemicals

3.Energy

4.Temperature

Question: 
What is the emission limit for dioxins as per European Union?

1.0.1

2.0.2

3.0.3

4.0.4

Question: 
Which of the following gas is toxic to methanogenic bacteria?

1.Carbon

2.Sulphur

3.Nitrogen

4. Oxygen

Question: 
Which of the following is another name given to conventional bio filters?

1.Percolating filter

2.Filter cake

3.Injection recovery

4.Bio-luminescence

Question: 
Which of the following is possible from ion exchange treatment?

1.Metal recovery

2.Oxidation reduction

3.Waste analysis

4.Chemical analysis

Question: 
Which of the following is the end product of anaerobic degradation?

1.Liquor

2.Nitrogen

3.Lead

4.Sulphur

Question: 
Which of the following parameters effect operating conditions of anaerobic treatment process?

1.Influent quality

2.Chemicals

3.Hydrocarbon

4. Sulphur

Question: 
Which of the following resin can be used to remove copper plating rinse water?

1.ResinTech’s CG-8 (Na)

2.ResinTech’s CG-8 (K)

3.ResinTech’s CP-8 (Na)

4.ResinTech’s PG-8 (Na)

Question: 
Which of the following waste characteristic is considered for combustion?

1.Flash point

2.Energy point

3.Burning point

4.Melting point

Question: 
Which of the following waste is not applicable for evaporation?

1.Calcium

2.Iron

3.Copper

4.Methylene chloride

Question: 
_______ is used for precipitation of heavy metals.

1.Calcium hydroxide

2.Lime

3.Potassium hydroxide

4. Lead oxide

Question: 
_______ treatment is suitable for metal salts bearing wastes.

1.Neutralisation

2.Chemical precipitation

3.Hydrolysis

4.Solvent extraction

Question: 
________ % of waste by weight remains after combustion.

1.20-35

2.20-40

3.40-50

4.30-50

Question: 
________ emission is cited as an issue from incineration?

1.Carbon

2.Dioxin

3.Sulphur

4.Nitrogen

Question: 
________ of hazardous waste plays a major role in designing combustion unit.

1.Calorific value

2.Chemical value

3.Energy value

4.Fuel value

Question: 
_________ wastes can be treated in evaporator.

1.Aqueous inorganic

2.Organic

3.Aqueous organic

4.Dry

Question: 
__________ from combustion of waste reduces cost.

1.Chemical analysis

2.Metals

3.Material recovery

4.LCA

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