Tag: synthetic fibres and plastics

Quizzes (16) Questions (42)

Questions Related to synthetic fibres and plastics

Multiple choice chemistry synthetic fibres and plastics plastic and environment pollution due to plastics environmental impact: plastics

Manholes are located at every ................ in the sewerage, at the junction of two or more sewers and at points where there is a change in direction -

  1. 50 to 70 m

  2. 50 to 80 m

  3. 50 to 60 m

  4. 50 to 90 m
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In standard sewerage design, manholes are typically placed at intervals of 50 to 60 meters to allow for maintenance and inspection.

Multiple choice chemistry synthetic fibres and plastics plastic and environment pollution due to plastics environmental impact: plastics

_____ is used to destroy the household waste,chemical waste and biological waste (from hospitals)  to $CO _2$ and $H _2O$?

  1. Sewage treatment plant

  2. Incineration

  3. Dumping

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

Incineration: A high temperature of above 1273K is required to convert the industrial, household and biological waste along with plentiful of oxygen supply into gases. Waste is converted into Carbon-dioxide and water 

Multiple choice chemistry synthetic fibres and plastics plastic and environment pollution due to plastics environmental impact: plastics

Which of the following process uses electrified gas which has a very high temperature?

  1. Sewage treatment

  2. Plasma gasification

  3. Composting

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

Plasma is primarily an electrically charged or highly ionised gas. it produces temperature of $13000^0F$.
Waste molecular bonds are broken and the disposal provides renewable energy in plasma gasification.

Multiple choice chemistry synthetic fibres and plastics plastic and environment pollution due to plastics environmental impact: plastics

__________ is the process in which waste is buried in the land.

  1. Landfill or dumping

  2. Recycling

  3. Incineration

  4. Sewage treatment
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dumping or landfill focuses attention on burying the waste in the land. Dumping of waste is good for the soil as it contains compounds of nitrogen and phosphorous which acts as fertilizers.

Multiple choice chemistry synthetic fibres and plastics plastic and environment pollution due to plastics environmental impact: plastics

__________  is a bio-degradation process that take organic matter i.e remains of plants,garden and kitchen waste that turn into nutrient-rich food for plants.

  1. Dumping

  2. Incineration

  3. Composting

  4. Sewage treatment
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Composting is a easy and natural bio-degradation process that takes organic matter i.e remains of plants, gardens and kitchen waste that turn into nutrient-rich food for the plants. it is usually used for organic farming by allowing the organic materials to sit in one place for months until microbes decompose it 

Multiple choice chemistry synthetic fibres and plastics plastic and environment pollution due to plastics environmental impact: plastics

Which of the following are examples of recycling by industry? 

  1. The use of scrap metal in manufacture of steel

  2. The use of waste paper

  3. The recovery of energy from burning combustible waste

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

Recycling is a practice that refers to the collection and reuse of waste materials. The materials from which the items are made can be reprocessed into new products.
All the above are examples of Recycling.

Multiple choice chemistry synthetic fibres and plastics plastic and environment pollution due to plastics environmental impact: plastics

Phosphate ions from fertilizers are sometimes present as contaminants in municipal sewage. These have been removed with some success by:

  1. passing of chlorine
  2. heating at $70^{\circ}C$

  3. filtration

  4. passing of steam
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Heating sewage to 70 degrees Celsius can help precipitate or remove certain phosphate compounds, though modern methods often use chemical precipitation.

Multiple choice chemistry synthetic fibres and plastics plastic and environment pollution due to plastics environmental impact: plastics

Which of the following is not an example of waste management?

  1. Sewage treatment

  2. Composting

  3. Weeding

  4. Dumping
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Weeding is an important control method practiced in many crops. The removal of weeds is useful because these unwanted plants compete with the crop for space, water and nutrients.

While all the other options are an example of waste management where waste is used to produce some useful form of energy.

Multiple choice chemistry synthetic fibres and plastics plastic and environment pollution due to plastics environmental impact: plastics

The _________ waste is being converted into fuel which has a high octane number. It is known as the green fuel.

  1. plastic

  2. bio-degradable

  3. non-biodegradable

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Over the years, there have been various solutions proposed – diversion, burning, etc.; however, nothing to date has proven to be a truly effective or environmentally responsible solution to the burgeoning global landfill problem.


In fact, many existing solutions have been just the opposite: costly, energy inefficient or equally as harmful to the environment as the plastic itself. 

It's only now, converting plastic waste to fuel is a solution that is not only economically viable, but that is remarkably simple and "green" as well.


Option A is correct.