Why is it safer to close the air holes of the Bunsen burner with unattended?

Why is it safer to close the air holes of the Bunsen burner with unattended?
by

1 Answer

Answer :

What is the answer ?
by

Related questions

Who Discovered Bunsen Burner ?

Description : Who Discovered Bunsen Burner ?

Last Answer : Robert Bunsen discovers Bunsen Burner.

The hottest part of the flame of a Bunsen burner is the

Description : The hottest part of the flame of a Bunsen burner is the

Last Answer : The hottest part of the flame of a Bunsen burner is the A. Blue Zone B. Zone of complete combustion ... D. All parts of the flame are equally hot.

What is a Bunsen burner from the North Sea?

Description : What is a Bunsen burner from the North Sea?

Last Answer : The bunsen burner doesn't come from the North Sea. In the UnitedKingdom, the mains gas supply is natural gas which largely comesfrom the wells in the North Sea, so we call it North Sea gas. ... 1970's we used coal gaswhich needed a different admixture of air so all our bunsens had tobe converted.

In which direction should you move the inoculating loop in the Bunsen burner flame?

Description : In which direction should you move the inoculating loop in the Bunsen burner flame?

Last Answer : Need answer

What is a stand and mat used to hold a beaker or flask over a Bunsen burner?

Description : What is a stand and mat used to hold a beaker or flask over a Bunsen burner?

Last Answer : Need answer

Why should you turn a Bunsen burner to a yellow flame if you need to leave it?

Description : Why should you turn a Bunsen burner to a yellow flame if you need to leave it?

Last Answer : The yellow flame is more visible - making it easier for othersto see. It's also a colder flame than the blue conical one.

What is a Bunsen burner from the North Sea?

Description : What is a Bunsen burner from the North Sea?

Last Answer : The bunsen burner doesn't come from the North Sea. In the UnitedKingdom, the mains gas supply is natural gas which largely comesfrom the wells in the North Sea, so we call it North Sea gas. ... 1970's we used coal gaswhich needed a different admixture of air so all our bunsens had tobe converted.

Why do cations emit colors when heated in a Bunsen burner flame?

Description : Why do cations emit colors when heated in a Bunsen burner flame?

Last Answer : Atoms were excited by heating, electrons move to a higher energy level and as these electrons fall back to a lower energy level, the specific radiation for the element is emitted.

Bunsen burner is an example of a/an __________ burner. (A) Inside mixing/premix type (B) Outside mixing/diffusion flame/nozzle mix type (C) Rotary cup (D) Submerged combustion

Description : Bunsen burner is an example of a/an __________ burner. (A) Inside mixing/premix type (B) Outside mixing/diffusion flame/nozzle mix type (C) Rotary cup (D) Submerged combustion

Last Answer : (A) Inside mixing/premix type

Give reasons for the following observations: (a) The element carbon forms a very large number of compounds. (b) Air holes of a gas burner have to be adjusted when the heated vessels get blackened by the flame. (c) Use of synthetic detergents causes pollution of water. -Chemistry

Description : Give reasons for the following observations: (a) The element carbon forms a very large number of compounds. (b) Air holes of a gas burner have to be adjusted when the heated vessels get blackened by the flame. (c) Use of synthetic detergents causes pollution of water. -Chemistry

Last Answer : Answer. (a) Carbon forms large number of compounds since carbon is small in size and can form stable covalent bonds (catenation) and it shows tetravalency. (b) Air holes of gas burner are ... not get blackened. (c) Some synthetic detergents are non-biodegradable, therefore, cause pollution of water.

What kind of combustion is observed in alkanes? Why do air holes of a gas burner have to be adjusted when vessel being heated gets blackened by the flame? -Science

Description : What kind of combustion is observed in alkanes? Why do air holes of a gas burner have to be adjusted when vessel being heated gets blackened by the flame? -Science

Last Answer : Alkanes are saturated hydrocarbons and generally burn in air with a blue, non-sooty flame. If the bottoms of the cooking vessels in our homes are getting blackened, it shows that the air holes of the gas stove are getting blocked and the fuel is not burning completely.

Don't leave any electrical appliances on unattended or what?

Description : Don't leave any electrical appliances on unattended or what?

Last Answer : I usually leave appliances connected unless I'm going away for an extended period of time. I pull out all plugs if I'm going off on holiday but I don't really think it is necessary. The main fuse box ... home electrics are much safer now than in days gone by. But I still don't like to take chances.

Are the trains transporting oil etc., allowed to be left unattended in your area?

Description : Are the trains transporting oil etc., allowed to be left unattended in your area?

Last Answer : Watch starting from 1:45 or so.

Who coined the warning, "Unattended children will be given a shot of espresso and a free puppy?"?

Description : Who coined the warning, "Unattended children will be given a shot of espresso and a free puppy?"?

Last Answer : I’ve seen it quite a few places and I think it’s been around long enough for it’s origins to be pretty hard to pin down.

when rhubarb is unattended and goes to seed will it be ok the next season

Description : when rhubarb is unattended and goes to seed will it be ok the next season

Last Answer : Yes, it will be fine. Rhubarb is herbaceous, it dies back to the ground each year. Only the flower stalks get woody looking but they're hollow. The only reason to remove the flower stalks is to save the plant from expending that much energy and extend its productive season.

Oh yeah, and that left you here for a while unattended :-)))))

Description : Please no code --- here on this great site :-) Let them stay as they are, from all tastes :-)

Last Answer : I saw Barbican's post before it was deleted, and really? I was most interested in spelling mistakes (I'm not without a mistake> so I liked it) and in terms of content, I don't think it would be any ... say that there are flies on Klaus, that you will not send me to war for the prince that you...

Is it illegal to leave an unattended child age six or younger in a car?

Description : Is it illegal to leave an unattended child age six or younger in a car?

Last Answer : Yes, it is illegal at any time.

What will most likely happen to a flower garden over time if it is left unattended?

Description : What will most likely happen to a flower garden over time if it is left unattended?

Last Answer : Need answer

A colorless salt gives violet colour to Bunsen flame and also turns moisture litmus paper blue. It is :

Description : A colorless salt gives violet colour to Bunsen flame and also turns moisture litmus paper blue. It is :

Last Answer : A colorless salt gives violet colour to Bunsen flame and also turns moisture litmus paper blue. It is : A. `Na_(2) ... C. `NaNO_(3)` D. `K_(2)CO_(3)`

How many of following metals impart a characteristic colour to the Bunsen flame ? `(i) Na " " (ii) Li " " (iii) K " " (iv) Ba` `(v) Sr " " (vi) Mg " "

Description : How many of following metals impart a characteristic colour to the Bunsen flame ? `(i) Na " " (ii) Li " " (iii) K " " (iv) Ba` `(v) Sr " " (vi) Mg " "

Last Answer : How many of following metals impart a characteristic colour to the Bunsen flame ? `(i) Na " " (ii) Li " " (iii) K ... ix) `Be " " (x )Ca " " (x i)Cu`

In the following diagram bunsen flame the (X ) represent.

Description : In the following diagram bunsen flame the (X ) represent.

Last Answer : In the following diagram bunsen flame the (X ) represent. A. Oxidising zone B. Reducing zone C. Lower temperature zone D. Hottest portion of flame

What is an element that was discovered by Bunsen?

Description : What is an element that was discovered by Bunsen?

Last Answer : R. Bunsen and G. Kirchhoff discovered rubidium and cesium.

Colour imparted to the Bunsen flame by strontium salt is - (1) bluish green (2) apple-green (3) brick red (4) crimson red

Description : Colour imparted to the Bunsen flame by strontium salt is - (1) bluish green (2) apple-green (3) brick red (4) crimson red

Last Answer : (4) crimson red Explanation: A flame test is performed by introducing a sample into the blue flame of a bunsen burner and noting any change in the colour of the flame. The tests can be used ... metallic elements in salts. With strontium salt, the colour of Bunsen flame ranges from crimson to red.

Colour imparted to the Bunsen flame by strontium salt is (1) bluish green (2) apple-green (3) brick red (4) crimson red

Description : Colour imparted to the Bunsen flame by strontium salt is (1) bluish green (2) apple-green (3) brick red (4) crimson red

Last Answer : crimson red

Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the (A) Physical nature, ash content and fineness of the coal (B) Amount of excess air supplied and load on the boiler (C) Type of burner and combustion chamber (D) All (A), (B) and (C)

Description : Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the (A) Physical nature, ash content and fineness of the coal (B) Amount of excess air supplied and load on the boiler (C) Type of burner and combustion chamber (D) All (A), (B) and (C)

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

The amount of combustible escaping unconsumed from the furnace, depends upon the (A) Air supplied and furnace temperature (B) Burner design (thoroughness of mixing versus stratification) (C) Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction) (D) All (A), (B) and (C)

Description : The amount of combustible escaping unconsumed from the furnace, depends upon the (A) Air supplied and furnace temperature (B) Burner design (thoroughness of mixing versus stratification) (C) Air preheat and the flow of ... , by acceleration or by change of direction) (D) All (A), (B) and (C)

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

If fuel and air are mixed ahead of the burner, it is called a/an __________ burner. (A) Premix (B) Outside mixing type (C) Rotary (D) Diffusion

Description : If fuel and air are mixed ahead of the burner, it is called a/an __________ burner. (A) Premix (B) Outside mixing type (C) Rotary (D) Diffusion

Last Answer : (A) Premix

In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of (A) Transportation of coal (B) Drying of coal (C) Combustion of coal by supplying it around the burner (D) Preheating the primary air

Description : In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of (A) Transportation of coal (B) Drying of coal (C) Combustion of coal by supplying it around the burner (D) Preheating the primary air

Last Answer : (C) Combustion of coal by supplying it around the burner

Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the (A) Requirement of large volume combustion chamber (B) Risk of explosion (C) Chances of clinker formation (D) Incomplete combustion of coal

Description : Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the (A) ... chamber (B) Risk of explosion (C) Chances of clinker formation (D) Incomplete combustion of coal

Last Answer : (B) Risk of explosion

Function of secondary air in pulverised coal firing is to (A) Transport the coal to the burner (B) Dry the coal (C) Ensure efficient burning of coal around the burner (D) Reduce primary air requirement

Description : Function of secondary air in pulverised coal firing is to (A) Transport the coal to the burner (B) Dry the coal (C) Ensure efficient burning of coal around the burner (D) Reduce primary air requirement

Last Answer : (C) Ensure efficient burning of coal around the burner

The main function of primary air in pulverised coal fired burner is to (A) Burn CO to CO2 (B) Dry and transport the coal (C) Have proper combustion by supplying it around the burner (D) Preheat the tertiary air used for complete combustion of CO to CO2

Description : The main function of primary air in pulverised coal fired burner is to (A) Burn CO to CO2 (B) Dry and transport the coal (C) Have proper combustion by supplying it around the burner (D) Preheat the tertiary air used for complete combustion of CO to CO2

Last Answer : (B) Dry and transport the coal

In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of (A) Transportation of coal (B) Drying of coal (C) Combustion of coal by supplying it around the burner (D) Preheating the primary air

Description : In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of (A) Transportation of coal (B) Drying of coal (C) Combustion of coal by supplying it around the burner (D) Preheating the primary air

Last Answer : (C) Combustion of coal by supplying it around the burner

What Is Being Done To make Air Bags Safer ?

Description : What Is Being Done To make Air Bags Safer ?

Last Answer : Need Answer

Realising that consumers have begun to seek safer cars, car makers are promoting air - bags to capitalise on this __________ while the strategic window is open. A)marketing mix B)market opportunity C)objective D)requirement E)need

Description : Realising that consumers have begun to seek safer cars, car makers are promoting air-bags to capitalise on this __________ while the strategic window is open. A)marketing mix B)market opportunity C)objective D)requirement E)need

Last Answer : B)market opportunity

A man was shot to death while in his car. There were no powder marks on his clothing, which indicated that the gunman was outside the car. However, all the windows were up and the doors locked. After a close inspection was made, the only bullet-holes discovered were on the man's body. How was he murdered? -Riddles

Description : A man was shot to death while in his car. There were no powder marks on his clothing, which indicated that the gunman was outside the car. However, all the windows were up and the doors locked. ... was made, the only bullet-holes discovered were on the man's body. How was he murdered? -Riddles

Last Answer : The victim was in a convertible. He was shot when the top was down.

Do you see portable stove/burner hot plate, shown in the detail without having to really search?

Description : Do you see portable stove/burner hot plate, shown in the detail without having to really search?

Last Answer : Duh ? ?

What should one do if a stove top burner stopped working before calling an expert or getting rid of it?

Description : What should one do if a stove top burner stopped working before calling an expert or getting rid of it?

Last Answer : You can buy a replacement burner at a good hardware store. It takes 30 seconds to pop out the old one, and 30 more to pop in a new one. Fixed!

Is it safe to use a stainless steel pot if I boiled water until it was dry and left it on the burner for a while?

Description : Is it safe to use a stainless steel pot if I boiled water until it was dry and left it on the burner for a while?

Last Answer : It should be fine. If your roommate is really that worried, though, put one cup of water and one cup of vinegar into the pot, boil the mixture for about 15 minutes, then wash the pot thoroughly ... quite unnecessary if there isn't any residue, but it will get rid of anything you may have overlooked.

Does Xanthrex Red fat burner work quickly and is it better than the Xanthrex blue?

Description : Does Xanthrex Red fat burner work quickly and is it better than the Xanthrex blue?

Last Answer : that stuff is bullshit.

Have you ever used a external USB CD burner with a net book?

Description : Have you ever used a external USB CD burner with a net book?

Last Answer : answer:I used to have one, but it never got used, ever! They work really well you plug em in, mine was recognised out the box, no software and away you go Only any use these days if you are ... as internals don't pay through the nose for them though, you can get a good Samsung one for £30/$35

What can I do with a pot that I left on the burner with sugar and water boiling for an hour?

Description : What can I do with a pot that I left on the burner with sugar and water boiling for an hour?

Last Answer : Did you try to clean it?

I can't find stove burner covers I like, so I would like to put an image onto black ones - any idea how?

Description : I can't find stove burner covers I like, so I would like to put an image onto black ones - any idea how?

Last Answer : The stove is not being used and these cover the burners and they have a flat top? Peel and Stick printer paper, clean the surface with alcohol and print the image on the paper and peel and stick. at least this is the way I might get it done!

Can I buy an internal DVD burner for my MacBook?

Description : Can I buy an internal DVD burner for my MacBook?

Last Answer : What model macbook is it? If your model supports super drives (the mac DVD burner), then you should be able to bring it in to an apple store and get it replaced. You'll be charged for the labor as ... way that won't void your warranty. If you don't want to pay the extra, just get an external one.

Dvd burner?

Description : Dvd burner?

Last Answer : On a Mac: Apple menu -> About this Mac -> More info This opens System Profiler. Then you can choose Hardware -> Disc Burning and it will tell you. On Windows try this: Click me I’m not sure about checking on Linux.

Is it possible to download a DVD burner to a drive that only came as a cd burner?

Description : Is it possible to download a DVD burner to a drive that only came as a cd burner?

Last Answer : It’s different hardware. Not hapening. DVD burners only cost $25. Just go out and buy one.

CD Burner Problems.

Description : CD Burner Problems.

Last Answer : There should be a little hole in the front of your CD drive that you can fit a straightened paperclip into, pushing this will cause the drive to open so you can at least get your CD out. Do this ... drivers. Is there any more details you can tell us about the drive so we can try to find drivers?

Is it bad to wrap the burner drip-catchers (don't know if they have a special name) on an electric stove with alumimum?

Description : Is it bad to wrap the burner drip-catchers (don't know if they have a special name) on an electric stove with alumimum?

Last Answer : I’ve never heard that. Before we moved to a house with a gas stove (YEAH!), our electric range’s burners were constantly covered in aluminum foil (for ease of cleaning). We never had a problem, but then, we are just one family.

What inexpensive DVD burner do you recommend?

Description : What inexpensive DVD burner do you recommend?

Last Answer : I have this exact burner, and it works great for me, in my older computer. It's quiet, fast, and very inexpensive. If you know how to install new hardware, this burner should be fine. If you don ... just as well. Either one is fine, you just need to check what kind of cables your computer uses.

What's a good dvd burner to get for a 3 year old Dell computer?

Description : What's a good dvd burner to get for a 3 year old Dell computer?

Last Answer : If you get an external, you can use it with other computers.

External DVD burner for MacBook...

Description : External DVD burner for MacBook...

Last Answer : Should work fine. Third-party burners have been supported for a while.