Tag: solid waste management

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Questions Related to solid waste management

Multiple choice evs garbage in, garbage out preparation of compost sewage disposal solid waste management

The human excreta can be used for the production of ________________.

  1. Vermi cakes for fertilizer

  2. Vermi cakes as manure

  3. Vermi cakes as animal food

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Excreta of the humans can be used for making vermicompost using earthworms. Vermi cakes are formed after composting of human excreta. It contains substances like phosphorous, potassium and nitrogen which are major components of fertilizers. Vermi cakes are also used as manure which is an organic matte. It is used as organic fertilizer. 
Thus, the correct answer is option D.

Multiple choice evs garbage in, garbage out preparation of compost sewage disposal solid waste management

Enzymatic filters are used for removing

  1. Nitrogen pollutants

  2. Chloride pollutants

  3. Hydrocarbons

  4. Lead
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Hydrocarbon Removal filters are designed to remove hydrocarbons and sediment contaminants from groundwater accumulation in bunded areas, outfalls or as part of any pollution preventative drainage solution on your site, where hydrocarbon risk entering the environment.
The contaminants are absorbed by the smart filtration technology which bond with the hydrocarbon molecules to efficiently encapsulate and solidify hydrocarbons internally in the cartridge.
This allows filtered groundwater to pass unimpeded through the filter.
So the correct answer is 'Hydrocarbons'.
Multiple choice evs garbage in, garbage out preparation of compost sewage disposal solid waste management

Composting is carried out from

  1. Sewage sludge

  2. Rubbish

  3. Garbage and sewage sludge

  4. Industrial wastes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Compost is the nutrient rich organic matter that is formed by the decomposition of plant and animal material. The process of making compost is called composting. The microbes break down the organic matter into humus that contains nutrients beneficial to plants. Compost is used to increase the fertility of the soil and aid the growth of plants. Compost can be made from various raw materials that are biodegradable. This include vegetable peels, kitchen waste, garbage and even sewage sludge too as it contains the bacteria that carry out the decomposition of organic matter.
So, the correct answer is 'Garbage and sewage sludge'.
Multiple choice evs garbage in, garbage out preparation of compost sewage disposal solid waste management

Pyrolysis of wood yields

  1. Alcohol

  2. Charcoal

  3. Charcoal and wood gas

  4. Charcoal, wood gas, tar and oil
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Pyrolysis is the thermal composition of a material by heating it at a very high temperature. Pyrolysis of wood occurs at a temperature of  200–300 °C. Many products are formed from pyrolysis of wood like charcoal, tar, wood gas and wood oil. Charcoal is the residue left after burning of wood. It is rich in carbon. Wood gas and wood oil are used as fuels. Tar is a black liquid and used as filler in roads.
So, the correct answer is 'Charcoal, wood gas, tar and oil'.
Multiple choice evs garbage in, garbage out preparation of compost sewage disposal solid waste management

The buildings which do not have a sewage system can _____________.

  1. Construct drainage tanks

  2. Construct septic tanks

  3. Construct sewage water bodies

  4. Construct septic canals
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Septic tanks are underground tanks in which sewage is collected and allowed to decompose with the use of bacteria. Drainage tanks are used to remove water. Sewage pollutes the water bodies when directly discharged into water bodies like river. Septic canal is a tubular passageway for the disposal for sewage.

Thus, the correct answer is option B.

Multiple choice evs garbage in, garbage out preparation of compost sewage disposal solid waste management

Pollution due to sewage can be reduced by 

  1. Creating separate chemical toilets.

  2. Constructing septic tanks.

  3. Letting off drainage in rivers.

  4. Both A and B.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A very large fraction of our people defecates in the open, on dry riverbeds, on railway tracks, near fields and many a time directly in water. Untreated human excreta is a health hazard. It may cause water pollution and soil pollution. Both the surface water and groundwater get polluted.
  • A septic tank is an underground chamber made of concrete, fiberglass or plastic through which domestic wastewater flows for basic treatment. Settling and anaerobic processes reduce solids and organics, but the treatment efficiency is only moderate. Septic tank systems are a type of simple onsite sewage facility.
  • Chemical toilet is a toilet that is not connected to a sewage system but has a compartment in which waste is treated with chemicals for temporary storage.
  • Letting off drainage in rivers will cause water pollution.
So, the correct answer is 'Both A and B'