Bissoy.com
Doctors Medicines MCQs Q&A

What should be the content of N2 in commercial cellulose nitrate used for plastic and coating purposes?

What should be the content of N2 in commercial cellulose nitrate used for plastic and coating purposes? Correct Answer 10.9-12.2%

Commercial cellulose nitrate used for plastic and coating applications have N2 content in the range of 10.9-12.2% whereas nitrates with N2 content greater than 12.5 are used for explosives.

Related Questions

Focusing on plastic pollution, the June issue of the National Geographic magazine created quite a buzz on social media, contrary to expectations after the cover featured a plastic bag submerged in an ocean with a ’Planet or Plastic?’ text on it. Ironically, the magazine itself was wrapped in a double layer of plastic. Which of the following options can be the reason for the magazine to go viral on the internet as inferred from the statements? I. It highlighted the amount of single-use plastic that enters in the world’s oceans which is a major environmental concern these days. II. National Geographic kicked off its ‘Planet or Plastic’ campaign, the magazine’s multiyear effort to raise awareness about the global plastic trash crisis through the cover. III. The magazine about ocean plastic pollution came wrapped in a plastic bag inside another plastic bag. IV. Because they realized the major flaw and announced that the magazine will no longer be shipped to readers in a plastic bag but will be sent out in a paper envelope instead.
In the following question, the first and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/passage is split into four parts and named P, Q, R, S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. S1. Plastic bags are a major cause of environmental pollution. P. Many countries around the globe have either ban the plastic bag or Levi tax on it. Q. Plastic as a substance is non-biodegradable and thus plastic bags remain in the environment for hundreds of years polluting it immensely. R. However, the problem hasn’t been solved completely because the implementation of these measures hasn’t been as successful. S. It has become very essential to ban plastic bags before they ruin our planet completely. S6. Research shows that waste plastic bags have been a major reason for untimely animal deaths.
A continuous process is set up for treatment of wastewater. Each day, 103 kg cellulose and 105 kg bacteria enter in the feed stream, while 102 kg cellulose and 1.5 x 102 kg bacteria leave in the effluent. The rate of cellulose digestion by the bacteria is 8 x 102 kg d-1. The rate of bacterial growth is 4x 102 kg d-l; the rate of cell death by lysis is 6 x 102 kg d-1. Write balances for cellulose and bacteria in the system.
Read the given passage and answer the question that follows. Plastic is extremely harmful for the earth and the environment. Plastic that we use eventually ends up in landfills and it takes hundreds of years to biodegrade. This plastic stays on the earth and pollutes land and oceans. There is a dire need to eliminate the use of plastic and to reduce and recycle the plastic that already exists in the landfills. Which of the following argument could be made from the above passage?
The following sentences form a paragraph.They are numbered as P, Q, R and S. These four parts are not given in their proper order. Read the sentences and choose the alternative that arranges them in correct order. P. Unfortunately, it is not free of this menace — plastic waste can be seen littered everywhere in this pristine evergreen stretch that is host to numerous species of wildlife.  Q. In order to have a plastic-free world, we have to unlearn the habit of ‘use and throw’. I am working in a biodiversity hotspot situated in the Western Ghats in Kerala.  R. Despite boards that say ‘Littering is prohibited’, visitors still bring plastic with them and leave behind a carpet of waste.  Plastic is slowly choking the environment and we need to stop this. S. Plastic bottles and covers can be seen in the crystal clear waters of forest streams even deep in the forests. 
Given below are four-sentence paragraphs (S1 -S4). S1 and S4 are given. From the options (P, Q, R) choose two sentences which can be S2 and S3. S1: Today, you can hardly look around you and not spot some item that is made entirely from plastic or has some plastic ingredient.  S2: S3: S4: Because of this many governments strictly control its use and create complex law that govern its creation, recycling P. This is not perfect as plastic has several disadvantages that prevent it from becoming universal building block of modern human civilization. Q. This only proves that plastic has managed to become popular building material of millions of useful items. R.  This troublesome ability of plastic doesn’t have great immediate impact on our environment.
In what ratio should 30% potassium nitrate solution be mixed with 60% potassium nitrate solution to get result as 40% potassium nitrate in the solution? A. 2 : 1 B. 3 : 1 C. 1 : 3 D. 4 : 5
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: Plastics that act as pollutants are categorized into micro-, meso-, or macro debris, based on size. B: They are inexpensive and durable, and as a result, levels of plastic production by humans are high. C: However, the chemical structure of most plastics renders them resistant to many natural processes of degradation and as a result, they are slow to degrade. D: Plastic pollution is the accumulation of plastic objects and particles (e.g. plastic bottles, bags, and microbeads) in the Earth's environment that adversely affects wildlife, wildlife habitat, and humans.
'In which of the following type of polymer the 'Cellulose nitrate, Rayon (cellulose acetate)'',are generally belonging ?
Read the paragraph and answer the question that follows: Incessant combustion of fossil fuels emits toxic gases, polluting the air; urbanization results in deforestation and hence poor air quality; littering of plastic waste damages the productivity of soil and pollutes water bodies. Environmental pollution results in more serious consequences like – global warming, unexpected climatic changes, depletion of natural resources, species depletion, and various other adverse effects leading to a lowered sustainability of life on earth. Another prime contributor to the pollution of the environment is plastic pollution. Plastic bags those are not disposed of properly, reach the soil and water bodies, polluting them and damaging dependent lives. Being non-bio degradable plastic lingers around for years, rendering them useless. What is the prime contributor to pollution?