Environmental Studies · Chemistry

Environmental and Chemical Processes

2,261 Questions

Environmental and chemical processes encompass waste management, pollution remediation, and biogas conversion. These questions evaluate your grasp of how organic and synthetic materials interact with ecosystems. Such topics regularly appear in general science and environmental studies papers.

Waste managementBiogas conversionPhytoremediationSoil washingPollution control

Environmental and Chemical Processes Questions

Multiple choice

Pyrolysis of Solid Waste refers to

  1. High temperature aerobic incineration

  2. High temperature anaerobic distillation of waste for energy generation

  3. Ambient aerobic distillation

  4. Ambient anaerobic distillation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pyrolysis of solid waste refers to high temperature anaerobic distillation of waste for energy generation. It involves the simultaneous change of chemical composition and physical phase, and is irreversible.

Multiple choice

What is the main gas found in the air we breathe?

  1. Nitrogen

  2. Hydrogen

  3. Oxygen

  4. Carbon Dioxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Earth's atmosphere is composed of approximately 78 percent nitrogen, 21 percent oxygen, and small amounts of other gases like argon and carbon dioxide.

Multiple choice geography pollution - preventive measures human activities and environmental degradation human activities and its impact on environment pollution, sources, effects and preventive measures

Electronic companies waste are ___________.

  1. used electronic equipments

  2. plastics

  3. different polymers

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Electronic waste" or "E-Waste" may be defined as discarded computers, office electronic equipment, entertainment device electronics, mobile phones, television sets, and refrigerators.
  •  This includes used electronics which are destined for reuse, resale, salvage, recycling, or disposal.
  • E-Waste includes almost any household or business item containing circuitry or electrical components with either power or battery supply. 
  • Many of these products can be reused, refurnished, or recycled.
Multiple choice transgenic organisms biotechnology and its applications biotechnology and its application biology

The process of reduction of pollution by use of organisms is called as

  1. Biotechnology

  2. Bioremediation

  3. Bioneutralizer

  4. Biopurifier
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bio-remediation is a waste management technique that involves the use of organisms to remove or neutralize pollutants from a contaminated site. Bio-remediation is a treatment that uses naturally occurring organisms to break down hazardous substances into less toxic or non toxic substances. 

Multiple choice physics sources of energy biomass and biogas biogas conventional sources of energy

Define biomass.

  1. Fossil fuels are also called biomass.

  2. The wastes and dead parts of living beings are called biomass.

  3. The wastes from industrial applications are called biomass.

  4. The wastes and dead parts of living beings buried deep inside the earth are called biomass.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The waste and dead parts of living beings is called biomass. Wastes and dead parts of living being buried deep inside the earth turns up into fossil fuels after a long time.

Multiple choice physics sources of energy biomass and biogas biogas conventional sources of energy

What is Biomass?

  1. Organic fuel that is used for treatment of wastes.

  2. Organic fuel that is used as a source of energy.

  3. Organic matter that has a large mass.

  4. Waste products from industries.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Organic matter that is obtained from living or dead organisms is called as biomass. Biomass is a renewable source of energy that is used as fuel.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

The process of heating the waste at high temperature is called as ________.

  1. Land-filling

  2. Pyrolysis

  3. Decomposing

  4. Incineration
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The scientific method of solid waste management where the waste is heated to high temperature. This process is beneficial for obtaining gas and electricity. The method is suitable for municipal solid waste management.

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 solid waste and its management conservation of environment

Resource recovery is also known as 

  1. Reuse

  2. Recycle

  3. Reduce

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

There are different waste management strategies for waste minimization. The aim of the waste management is to obtain the maximum benefits from products and to generate the minimum amount of waste. Resource recovery in the waste management process is a step of converting a waste material into a useful product. It is called as recycling. 

Thus, the correct answer is option B.

Multiple choice solid waste and its management conservation of environment

Processing is a step during waste management which means

  1. Operation to convert a material into a non-biodegradable waste

  2. Operation to convert a material into a useful product

  3. Operation to convert a material into a weedicides

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
There are different waste management strategies for waste minimization. The aim of the waste management is to obtain the maximum benefits from products and to generate the minimum amount of waste. Processing during the waste management process is a step of converting a waste material into a useful product. It is called as recycling. 
Thus, the correct answer is option B.