Environmental Studies · Chemistry

Environmental and Chemical Processes

2,324 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

What is the process of removal of waste material from body known as?

  1. Circulation

  2. Transpiration

  3. Reproduction

  4. Excretion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
System
Function
Digestive system
Taking in complex food and using it in simple form by body
Respiratory system
Inhaling and exhaling air and utilizing it to meet energy needs
Circulatory system
Movement of blood to each and every part of body to provide nutrition
Excretory system
Removal of water materials from the body

So it is the respiratory system involved in the inhalation and exhalation of air. Whereas transpiration is loss of water from leaf surface and reproduction is a mode of giving birth to similar ones.

Multiple choice

The process of bleaching by chorine is called

  1. decomposition

  2. oxidation

  3. substitution

  4. reduction

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chlorine acts as a bleaching agent by releasing oxygen or by reacting with water to form hypochlorous acid, which then oxidizes the colored pigments in materials to make them colorless.

Multiple choice

The conversion of NO3 to N2 is called

  1. nitrification

  2. denitrification

  3. nitrogen fixation

  4. ammonification

  5. -
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Denitrification is a microbially facilitated process of nitrate reduction (performed by a large group of heterotrophic facultative anaerobic bacteria) that may ultimately produce molecular nitrogen through a series of intermediate gaseous nitrogen oxide products.

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 allotropes of carbon chemistry occurrence of carbon compounds in nature polymers

Process of conversion of wood into coal by biochemical process, taking over millions of years is called:

  1. catenation

  2. carbonation

  3. pyrolysis

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

The Process of conversion of wood into coal by biochemical process is known as Carbonization. Coal burns cleaner than wood burning coal was easier because coal burned longer than wood.

Carbonization is the term for the conversion of an organic substance into carbon or a carbon-containing residue through pyrolysis or destructive distillation. It is often used in organic chemistry with reference to the generation of coal gas and coal tar from raw coal.

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 elements of business recent trends in marketing product life cycle e-marketing role of a marketer definition and functions of purchasing and storage department purchasing and stores

The time taken to convert raw materials into finished product is referred to as the 

  1. Life cycle

  2. Product cycle

  3. Operating cycle

  4. Product cycle or operating cycle
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The operating cycle is the time it takes for a company to purchase goods, sell them, and collect cash. It is often synonymous with the product cycle in manufacturing contexts.