Which of the following is a biodegradable waste? (1) Wool (2) Polythene bags (3) Plastics (4) Nylon

Which of the following is a biodegradable waste? (1) Wool (2) Polythene bags (3) Plastics (4) Nylon
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(1) Wool
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Which of the following is a biodegradable waste ? (1) Wool (2) Polythene bags (3) Plastics (4) Nylon

Description : Which of the following is a biodegradable waste ? (1) Wool (2) Polythene bags (3) Plastics (4) Nylon

Last Answer : Wool

Plastics are (A) Used in very high temperature applications (B) Non-biodegradable (C) Not suitable for drainage pipe manufacture (D) All (A), (B) & (C)

Description : Plastics are (A) Used in very high temperature applications (B) Non-biodegradable (C) Not suitable for drainage pipe manufacture (D) All (A), (B) & (C)

Last Answer : (B) Non-biodegradable

Which of the following statement is false? (1) Polystyrene was discovered in 1839 by Edward Simon (2) It is used for making plastics and CD cases (3) It is not biodegradable (4) None of these

Description : Which of the following statement is false? (1) Polystyrene was discovered in 1839 by Edward Simon (2) It is used for making plastics and CD cases (3) It is not biodegradable (4) None of these 

Last Answer : None of these

Which of the following is a natural polymer? (1) Bakelite (2) Nylon (3) Polythene (4) Starch

Description : Which of the following is a natural polymer? (1) Bakelite (2) Nylon (3) Polythene (4) Starch

Last Answer : (4) Starch Explanation: Cotton, starch, cellulose and rubber are some of the naturally occurring polymers. Starch is a condensation polymer made up of hundreds of glucose monomers, which split out ... is also referred to as a polysaccharide, because it is a polymer of the monosaccharide glucose.

Which of the following is used to make light weight, but strong plastic? (1) Nylon (2) Polythene (3) Polyvinyl Chloride (4) Methyl Methacrylate

Description : Which of the following is used to make light weight, but strong plastic? (1) Nylon (2) Polythene (3) Polyvinyl Chloride (4) Methyl Methacrylate

Last Answer : (3) Polyvinyl Chloride Explanation: Polyvinyl chloride (PVC) is a common, strong but lightweight plastic that is used in making tough plastic. It is used for flexible applications such ... cables. It is the third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene.

Which of the following is a natural polymer? (1) Bakelite (2) Nylon (3) Polythene (4) Starch

Description : Which of the following is a natural polymer? (1) Bakelite (2) Nylon (3) Polythene (4) Starch

Last Answer : (4) Starch Explanation: Cotton, starch, cellulose and rubber are some of the naturally occurring polymers. Starch is a condensation polymer made up of hundreds of glucose monomers, which split out water molecules as they chemically combine.

Condensation polymerisation is not involved in the manufacture of (A) Teflon (B) Polythene (C) Terylene (D) Nylon

Description : Condensation polymerisation is not involved in the manufacture of (A) Teflon (B) Polythene (C) Terylene (D) Nylon

Last Answer : (B) Polythene

__________ is an addition polymer (A) Nylon (B) Bakelite (C) Polythene (D) None of these

Description : __________ is an addition polymer (A) Nylon (B) Bakelite (C) Polythene (D) None of these

Last Answer : (C) Polythene

In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross￾linked polymer? (A) Bakelite (phenol formaldehyde) (B) Polyester (C) Polythene (D) Nylon-6

Description : In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross￾linked polymer? (A) Bakelite (phenol formaldehyde) (B) Polyester (C) Polythene (D) Nylon-6

Last Answer : (A) Bakelite (phenol formaldehyde)

Clasify the polymers as addition and condenstation polymers. Nylon 66, Buna-S, Polythene.

Description : Clasify the polymers as addition and condenstation polymers. Nylon 66, Buna-S, Polythene.

Last Answer : Ans: Nylon 66 condensation polymer.  Buna-S and polythene—Addition polymer.

Arrange the following Polymers in increasing order of inter molecular forces. (a) Nylon 66, Buna-S and Polythene (b) Nylon 6, Neoprene and PVC

Description : Arrange the following Polymers in increasing order of inter molecular forces. (a) Nylon 66, Buna-S and Polythene (b) Nylon 6, Neoprene and PVC

Last Answer : Ans: (a) Buna-S, Polythene and Nylon 66.  (b) Neoprene, PVC and Nylon 6.

Arrange the following polymer in increasing order of their molecular forces : (a) nylon-6, 6, Buna-S, polythene. (b) nylon-6, Neoprene, polyvinyl chloride.

Description : Arrange the following polymer in increasing order of their molecular forces : (a) nylon-6, 6, Buna-S, polythene. (b) nylon-6, Neoprene, polyvinyl chloride.

Last Answer : Ans. (a) Buna S < Polythene < Nylon-6, 6. (b) Neoprene < Polyvinyl Chloride < Nylon-6.

Which of the following is polymeric solid? a) Nylon b) Plastic c) Polythene d) All of above

Description : Which of the following is polymeric solid? a) Nylon b) Plastic c) Polythene d) All of above

Last Answer : d) All of above

Which of the following is a natural polymer? (1) Bakelite (2) Nylon (3) Polythene (4) Starch

Description : Which of the following is a natural polymer? (1) Bakelite (2) Nylon (3) Polythene (4) Starch

Last Answer : Starch

Which of the following is used to make light weight, but strong plastic ? (1) Nylon (2) Polythene (3) Polyvinyl Chloride (4) Methyl Methacrylate

Description : Which of the following is used to make light weight, but strong plastic ? (1) Nylon (2) Polythene (3) Polyvinyl Chloride (4) Methyl Methacrylate

Last Answer : Polyvinyl Chloride

When is the use of polythene bags banned in Bangladesh ?

Description : When is the use of polythene bags banned in Bangladesh ?

Last Answer : The use of polythene bags was banned in Bangladesh on March 1, 2002.

Liners of bags are usually made of (A) Polythene (B) PVC (C) Polypropylene (D) Polyesters

Description : Liners of bags are usually made of (A) Polythene (B) PVC (C) Polypropylene (D) Polyesters

Last Answer : (C) Polypropylene

Where can I purchase biodegradable plastic bags?

Description : Where can I purchase biodegradable plastic bags?

Last Answer : You must get permission if you plan on running background checks on possible employees. If you are opening up a new restaurant it would be best if you included the fact that you plan on running background checks on you application, thus clearing you from any right violations in the future.

What are biodegradable bags made of?

Description : What are biodegradable bags made of?

Last Answer : What are biodegradable bags made of? The active use of plastic bags in everyday life has led to the accumulation of an impressive amount of inorganic waste in landfills. And if only in landfills! ... products are already widely presented on store shelves, the next step is for us, for customers.

(i) Mention any two sources of waste.(ii) What are Biodegradable waste ? -Geography

Description : (i) Mention any two sources of waste.(ii) What are Biodegradable waste ? -Geography

Last Answer : (i) Two sources of wastes are : 1. Domestic Waste 2. Industrial Waste (ii) Biodegradable Waste: Waste produced by plants and animals, kitchen, paper, green waste etc that can be broken down in a reasonable amount of time through microbial activities of fungi and bacteria.

(i) What is understood by biodegradable waste ? (ii) State one source of gaseous waste. -Geography

Description : (i) What is understood by biodegradable waste ? (ii) State one source of gaseous waste. -Geography

Last Answer : (i) Biodegradable waste is a type of waste which can be broken down in a reasonable amount of time, into its base compounds by micro organisms and other living things regardless of what those ... CO2. Methane comes out from cattle shed. Swamps, coal mines etc. Volcanic erruptions gives out SO2.

Differentiate Biodegradable and Non-biodegradable waste. -SST 10th

Description : Differentiate Biodegradable and Non-biodegradable waste. -SST 10th

Last Answer : Biodegradable Non-biodegradable The biodegradable wastes break down and decompose by microorganism like bacteria and fungi in the soil. e.g. Wood, Paper etc. Non-biodegradable waste includes that material which does not breakdown or decompose in the soil. e.g. Plastics, Poly- bags etc.

If all the waste we generate is biodegradable, will this have no impact on the environment? -Biology

Description : If all the waste we generate is biodegradable, will this have no impact on the environment? -Biology

Last Answer : Biodegradable waste will be recycled easily by the decomposers such as bacteria and fungi. It will have only this bad impact on our environment that, many Of the gases released during decomposition process may result in global warming.

If all the waste we generate is biodegradable, will this have no impact on the environment ? -Biology

Description : If all the waste we generate is biodegradable, will this have no impact on the environment ? -Biology

Last Answer : If all the waste we generate is biodegradable, it will also have impact on the environment. If it is disposed off properly, the problem of air, water and soil pollution can be lessened to an ... be disease-free. But if it is not disposed off properly, it will affect the environment adversely.

Match the columns and choose the correct options `{:(,I,,II),((p),"e-waste",(i),"Waste clothing"),((q),"Biodegradable waste",(ii),"Dirt"),((r),"Inert

Description : Match the columns and choose the correct options `{:(,I,,II),((p),"e-waste",(i),"Waste clothing"),((q),"Biodegradable waste",(ii),"Dirt"),((r),"Inert

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Is a plastic bottle biodegradable waste?

Description : Is a plastic bottle biodegradable waste?

Last Answer : No, plastic takes a very long time to decompose, and is not biodegradable. Some plastics are able to be recycled, but not all.

A river with an inflow of domestic sewage rich in organic waste may result in (a) an increased production of fish due to biodegradable nutrients (b) death of fish due to lack of oxygen (c) drying of the river very soon due to algal bloom (d) increased population of aquatic food web organisms.

Description : A river with an inflow of domestic sewage rich in  organic waste may result in  (a) an increased production of fish due to  biodegradable nutrients (b) death of fish due to lack of oxygen ( ... of the river very soon due to algal bloom (d) increased population of aquatic food web  organisms.

Last Answer : (d) increased population of aquatic food web  organisms.

A river with an inflow of domestic sewage rich in organic waste may result in (a) an increased production of fish due to biodegradable nutrients (b) death of fish due to lack of oxygen (c) drying of the river very soon due to algal bloom (d) increased population of aquatic food web organisms.

Description : A river with an inflow of domestic sewage rich in organic waste may result in (a) an increased production of fish due to biodegradable nutrients (b) death of fish due to lack of oxygen (c) drying of the river very soon due to algal bloom (d) increased population of aquatic food web organisms.

Last Answer : (b) death of fish due to lack of oxygen

Domestic waste constitutes (a) non-biodegradable pollution (b) biodegradable pollution (c) effluents (d) air pollution.

Description : Domestic waste constitutes (a) non-biodegradable pollution (b) biodegradable pollution (c) effluents (d) air pollution.

Last Answer : (b) biodegradable pollution

Why is it better to use plant and animal based products in place of petroluem and plastics?

Description : Why is it better to use plant and animal based products in place of petroluem and plastics?

Last Answer : This is my midterm essay question which I have researched on my own. But I am at a loss.

I need ways to test/get data about homemade plastics. What can I do with Flexural Strength and Flexural Modulus...

Description : I need ways to test/get data about homemade plastics. What can I do with Flexural Strength and Flexural Modulus...

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When I do the dishes, why do the plastics sometimes end up greasy?

Description : When I do the dishes, why do the plastics sometimes end up greasy?

Last Answer : answer:I've noticed that too, must have something to do with the grease sticking to the plastic more. I always use tons of soap and rinse really well as I also have a phobia about tasting soap. ... run it for the same reason and because somewhere, deep down, I think it is inferior to hand washing.

Which plastics can helium support?

Description : Which plastics can helium support?

Last Answer : Most if not all plastics are porous and Helium is a small molecule and will pass through the plastic over time. You could try sealing the sculpture with a sealer and that my help contain the ... their balloons to give them long float time of sometimes weeks with the Mylar balloons going even longer.

Why not get a small chipper and chip non-recyclable plastics into small pieces before dumping?

Description : Why not get a small chipper and chip non-recyclable plastics into small pieces before dumping?

Last Answer : Because a landfill full of sharp plastic shards is not good for the enviroment. Also given that it won't speed up the rate decomposition I think it isn't worth the effort. Add on ... overall it's probably worsefor the enviroment. It would be better to boycot companies that use plastic packaging.

Do you remember the many questions on safe/unsafe plastics for water bottles, food storage, Nalgene, etc?

Description : Do you remember the many questions on safe/unsafe plastics for water bottles, food storage, Nalgene, etc?

Last Answer : answer:Here's a summary; http://tinyurl.com/3jdkmj And one of many from ask-public: http://www.ask-public.com/disc/466/water-bottles-plastic-glass-stainless-steel-or/ Similar articles in all ... (the white waxy, shiny coating). Tomatoes and other acid foods may leach more severely. Buyer beware.

Should we start mining old landfill sites for plastics and other recyclable material?

Description : Should we start mining old landfill sites for plastics and other recyclable material?

Last Answer : I don’t see why not! I think it could be worth it. Then we wouldnt have to cut down as many trees to get new stuff. All the stuff at the dump is just going to sit there anyways.

what are extruded plastics

Description : what are extruded plastics

Last Answer : Need Answer

How can we reduce the use of plastics in our daily life?

Description : How can we reduce the use of plastics in our daily life?

Last Answer : Usage of plastics should be banned by the government. First and Foremost thing is the role of an individual in reducing the usage of plastics. People should carry a cloth bag while going to shops ... grocery shops, markets etc. Steel or glass containers should be used at homes for storing things.

Would a low-temp glue gun be better than a high-temp glue gun for plastics?

Description : Would a low-temp glue gun be better than a high-temp glue gun for plastics?

Last Answer : A low temperature glue gun would be best because there would be less damage to the plastic from the heated glue.

On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because – (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Description : On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because - (1) metals ... metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Last Answer : (3) metals are good conductors of heat Explanation: On a chilly day, the room temperature is lower than our body temperature. Since metals have a higher coefficient of thermal conductivity than plastic, they ... from our fingers will flow to the metal cap much more quickly than to the plastic body.

'Corrosion-resistant material' and 'noncorrodible material' will include which of the following ____________. A. plastics B. silver C. copper-nickel D. all of the above

Description : 'Corrosion-resistant material' and 'noncorrodible material' will include which of the following ____________. A. plastics B. silver C. copper-nickel D. all of the above

Last Answer : Answer: D

The substances used in colour paints, fil- ters, plastics and other materials?

Description : The substances used in colour paints, fil- ters, plastics and other materials?

Last Answer : Pigments

Which type of plastics is used for mak- ing adhesives; button etc?

Description : Which type of plastics is used for mak- ing adhesives; button etc?

Last Answer : Urea formaldehyde

Plastics are generally?

Description : Plastics are generally?

Last Answer : Synthetic polymers

Bakelite (phenol-formaldehyde) resin cannot be used as (A) Decorative paint (B) Decorative laminates (C) Electrical insulation (D) Glass reinforced plastics

Description : Bakelite (phenol-formaldehyde) resin cannot be used as (A) Decorative paint (B) Decorative laminates (C) Electrical insulation (D) Glass reinforced plastics

Last Answer : (A) Decorative paint

Visco-elastic behaviour exhibited by plastics is a __________ like behaviour. (A) Solid (B) Liquid (C) Combination of solid & liquid (D) Neither solid nor liquid

Description : Visco-elastic behaviour exhibited by plastics is a __________ like behaviour. (A) Solid (B) Liquid (C) Combination of solid & liquid (D) Neither solid nor liquid

Last Answer : (C) Combination of solid & liquid

__________ moulding is used for shaping of thermosetting plastics exclusively. (A) Compression (B) Injection (C) Transfer (D) Extrusion

Description : __________ moulding is used for shaping of thermosetting plastics exclusively. (A) Compression (B) Injection (C) Transfer (D) Extrusion

Last Answer : (C) Transfer

Plasticisers are added to synthetic plastics to (A) Impart flexibility (B) Improve workability during fabrication(C) Develop new improved properties not present in the original resin(D) All (A), (B) and (C)

Description : Plasticisers are added to synthetic plastics to (A) Impart flexibility (B) Improve workability during fabrication (C) Develop new improved properties not present in the original resin (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Pick out the correct statement. (A) Plastics are good conductors of heat and electricity (B) All the polymers are highly crystalline in nature (C) Polymers can be vaporised by heating to a very high temperature (D) The liquid polymer becomes greasy, then waxy and finally solid on increasing the degree of polymerisation

Description : Pick out the correct statement. (A) Plastics are good conductors of heat and electricity (B) All the polymers are highly crystalline in nature (C) Polymers can be vaporised by heating to ... D) The liquid polymer becomes greasy, then waxy and finally solid on increasing the degree of polymerisation

Last Answer : (D) The liquid polymer becomes greasy, then waxy and finally solid on increasing the degree of polymerisation