Description : Combustion of pulverised coal as compared to that of lump coal (A) Develops a non-luminous flame (B) Develops a low temperature flame (C) Can be done with less excess air (D) Provides a lower rate of heat release
Last Answer : (C) Can be done with less excess ai
Description : During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the (A) Incomplete combustion (B) Complete combustion (C) High oxygen in flue gas (D) None of these
Last Answer : (B) Complete combustion
Description : The hottest part of the gas flame is known as – (1) blue zone (2) non-luminous zone (3) luminous zone (4) dark zone
Last Answer : (3) luminous zone
Description : The hottest part of the gas flame is known as (1) blue zone (2) non-luminous zone (3) luminous zone (4) dark zone
Last Answer : luminous zone
Description : Cannel coal (A) Is non-coking (B) Has a high volatile matter content and burns with a luminous smoky flame (C) Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named (D) All (A), (B) and (C
Last Answer : (D) All (A), (B) and (C
Description : The hottest part of the flame lies in its _________zone. (A) Non-luminous (B) Luminous (C) Yellow (D) Unburnt gases
Last Answer : (A) Non-luminous
Description : What happens to a nichrome wire in a non-luminous flame?
Last Answer : The color of wire is unchanged.
Description : The middle zone of a candle flame is known as the ________ zone. a) luminous b)non-luminous c)wax d)burning
Last Answer : a) luminous
Description : In luminous flame the flame is produce when the air hole is open or close?
Last Answer : A bunsen burner (as used in a science lab or science classroom) will burn quietly, and a flickery yellow (like a wax candle) if the air hole is closed, or closed too much. If the air holes is opened, the flame will turn bluish and become noisy and hotter as more air mixes with the gas.
Description : Which zone of a candle flame is the hottest? (1) Dark innermost zone (2) Outermost zone (3) Middle luminous zone (4) Central zone
Last Answer : (3) Middle luminous zone Explanation: The outermost zone of the flame is blue in colour and it is the hottest part. The innermost zone is the least hot and black in colour.
Description : Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby ... B) Irritation in eyes (C) Respiratory trouble (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : The window which projects outside a room of a building for admitting more light and air, is known (A) Bay window (B) Casement window (C) Lantern window (D) Dormer window
Last Answer : Answer: Option A
Description : Sooty or charcoal like powdery mass usually appearing on floral organs particularly the ovary is
Last Answer : Ans. Smut
Description : Will shutting down my PC extend the life of my power supply?
Last Answer : Not really, as far as I am aware. It will save power (if you haven’t set your computer’s power settings up properly, like most people, though, it might not), but the biggest source of stress on electronic components that I know of is turning them on and off again thousands of times.
Description : How can non luminous bodies be made luminous?
Last Answer : by reflecting the light energy
Description : Are you good at admitting when you don’t know the answer to a question?
Last Answer : answer:Yes, I can easily admit to not knowing the answer to a question. Then I go look it up. In that way I have amassed the answer to every question there is. Actually, admitting to the older kids you don’t have the answer, but you’ll sure find out, is a very good thing to do. It’s a good example.
Description : What would you do if someone sent you a private message admitting that they did something on this site or another site that would get them banned?
Last Answer : Others may disagree, but I think you should leave it alone.
Description : What is the difference between admitting "being wrong" and "being at fault"?
Last Answer : Admitting being wrong can be a simple recognition that one made a mistake. Admitting being at fault both recognizes that one made a mistake, and implies that one accepts responsibility for the consequences of that mistake. if I’m not mistaken
Description : After admitting the patient to the PACU, the first action of the nurse would be to A. Assess patency of the airway B. Check the rate of the IV infusion C. Monitor the vital signs D. Assess the clients pain
Last Answer : A. Assess patency of the airway
Description : Being conscientious, admitting mistakes, and knowing one's strengths and limitations are the skills associated with _______. (a) Competence ; (b) consistency ; (c) loyalty ; (d) integrity
Last Answer : (a) Competence ;
Description : Suppose a child is devoid of social efficiency then what measures will you adopt to overcome this difficulty? Options: A) Imparting him training to overcome the difficulty B) Mentioning the positive aspects of it C) Giving threats of its deficiency D) Admitting the child in a clinic
Last Answer : Imparting him training to overcome the difficulty
Description : . A coal having high volatile matter content will (A) Give less yield of tar and gas on carbonisation (B) Burn with a small non-smoky flame (C) Have a very high calorific value (D) None of these
Last Answer : (D) None of these
Description : Planets are (a) luminous bodies that twinkle (b) non-luminous bodies that twinkle (c) luminous bodies that do not twinkle (d) non-luminous bodies that do not twinkle
Last Answer : Ans:(d)
Description : Planets 1. are luminous bodies 2. twinkle 3. are non-luminous bodies 4. do not twinkle Which of the above statements is/are correct? (a) 1 and 2 (b) 1 and 4 (c) 2 and 3 (d) 3 and 4
Description : We can see non luminous object ,when the light a) emitted by the object falls on the eye . b) is reflected from the object towards eye . c) completely passes through the object . d) gets completely absorbed by object .
Last Answer : b) is reflected from the object towards eye .
Description : Oxygen enrichment of combustion air does not result in increase of the (A) Flame temperature (B) Oxygen in the flue gas (C) Stack loss (D) Heat transfer rate in the furnace
Last Answer : (B) Oxygen in the flue gas
Description : Air filtration in a furnace (A) Reduces its thermal efficiency (B) Is indicated by flame sting out (C) Increases the flue gas temperature (D) None of these
Last Answer : (A) Reduces its thermal efficiency
Description : Combustion of fuel in a furnace with oxygen enriched air results in higher (A) Flue gas volume (B) Flame temperature (C) Fuel consumption (D) Stack loss
Last Answer : (B) Flame temperature
Description : Use of excess of combustion air in the combustion of fuels results in (A) Heat losses (B) Long flame (C) Condensation of water vapour from the fuel gas (D) None of these
Last Answer : (A) Heat losses
Description : Presence of nitrogen in combustion air does not reduce the (A) Amount of heat liberated (B) Flame temperature (C) Flue gas temperature (D) Any of the above
Last Answer : (A) Amount of heat liberated
Description : For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will (A) Increase (B) Decrease (C) Increase or decrease depending on the fuel type (D) Not change
Last Answer : (B) Decrease
Description : Pick out the wrong statement. (A) Strongly caking coal should not be used in the Lurgi gasifier (B) Acetylene gas cannot be used for illumination purpose (C) Water gas is called blue gas ... is burnt (D) Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels
Last Answer : (B) Acetylene gas cannot be used for illumination purpose
Description : Temperature of distant luminous bodies can be determined by (1) Mercury thermometers (2) Gas thermometers (3) Pyrometers (4) Colour thermometers
Last Answer : Pyrometers
Description : Which of the following statements represents an application of a silicon controlled rectifier? A. To provide DC power for a main propulsion motor. B. For use as a voltage reference diode. C. For sensing flame in an automated burner. D. To eliminate power supply hum.
Last Answer : Answer: A
Description : A glass chimney stops an oil lamp from smoking because: A. It increases the supply of oxygen to the flame by convection B. The heat produced ensures complete C. Both to these (Answer) D. Neither of these
Last Answer : C. Both to these (Answer)
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.
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.
Description : Why does shutting your eyes give relief when tired?
Last Answer : It gives your eyes a rest, do you wear glasses or should you?
Description : What is your opinion on Vine shutting down?
Last Answer : never cared. not caring now, either.
Description : Is shutting down the online comments section tantamount to censorship or not?
Last Answer : answer:No. I find it odd that a newspaper would do such a thing - it's just a curious approach to the dissemination of knowledge, but I don't see it as censorship. The general public ... a person can express their opinion, ranging from a personal blog to Facebook and a thousand places inbetween.
Description : Computer Shutting Down Automatically?
Last Answer : Have a look at the fan and heat sink on your CPU. How much dust is on there?
Description : How can shutting down the government be a great idea?
Last Answer : More to the point, do member of Congress get paid?
Description : I am part of the IMVU chat portal and their new client is shutting my computer off?
Last Answer : They’ve made it difficult to access some of the older client versions. Have you recently done an update or does your client need to be updated? Did you report in the issues & bug reporting forum?
Description : Is there a way to keep my Macbook Pro from shutting down automatically?
Last Answer : Click on the blue apple and go into system preferences. From there go into energy saver and set it to where you want it. But remember it is a good idea to keep it set to go to sleep after a reasonable period of time when you are not downloading, in order to preserve energy consumption.
Description : Why is my computer shutting down randomly?
Last Answer : A ram chip is not seated, the fan that cools your processor is clogged with dust, or your hard drive is in the process of failing. Back up everything while you have a chance!
Description : How come every time I start up iChat after shutting it down, even after a computer restart an old chat room shows up?
Last Answer : answer:Save your sanity. System Preferences -> General -> Un-check restore Windows when opening and closing http://i.imgur.com/2WaxE.png
Description : Macbook Pro shutting down after 10 min of use, then has to rest for hour before I can restart it?
Last Answer : There must be a problem with the fan I guess? I do not know if it’s worth fixing but I think you should take it to the nearest apple store and have them check it out? From the way I see it, I think you should get the new macbook pro. Good luck :)
Description : How do I distance myself from people without completely shutting them out?
Last Answer : answer:I feel for you @cliofaye. Honestly I feel therapy would be the best way to find these answers. You'd be able to work through your grief, work out your anger, and heal your self while gaining knowledge on how to participate in healthy ... {{{{{{{{{{{{{{{{{{{HUGS}}}}}}}}}}}}}}}}}}}}}}}}}}
Description : Why is my Madden 08' for the PC shutting down?
Last Answer : if it’s working with other games it’s probably the game. You should check the scratches…If you can’t get the game working, you can probably find it on amazon for $10 or less…
Description : Is anyone else sad that Nasa's space shuttle program is shutting down?
Last Answer : Yes.