Description : The tip of the match-stick contains – (1) phosphorus pentoxide (2) white phosphorus (3) red phosphorus (4) phosphorus trichloricle
Last Answer : (3) red phosphorus Explanation: A typical modern match is made of a small wooden stick or stiff paper. One end is coated with a material that can be ignited by frictional heat generated by ... in rows stapled into matchbooks. They are commonly sold by tobacconists and many other kinds of shops.
Description : The tip of the match-stick contains (1) phosphorus pentoxide (2) white phosphorus (3) red phosphorus (4) phosphorus trichloride
Last Answer : red phosphorus
Description : (#1) 1001 Things To Do With ......: Match sticks. Care to come up with other uses for matches?
Last Answer : Clean the wax out of my ears.
Description : What is used in preparing match sticks?
Last Answer : Red phosphorus
Description : Substance used to make the match sticks?
Last Answer : Red Phosphorous & Potassium Chlorate
Description : Identify and manufacture the phosphorous required for match box sticks.
Last Answer : Red phosphorus is used in production of match boxes. Red Phosphorous Production Raw material: Phosphate rock, coke, sand Reaction: Phosphate rock is ground, mixed with portion ... when approximately 70% has been converted. Heat control is required as reaction is exothermic.
Description : Which material is used for manufacturing of following LED ? (i) Infrared LED (ii) Red or Green LED (ii) Red or Yellow LED (iv) Blue LED
Last Answer : Infrared LED : Aluminum gallium arsenide (AlGaAs) Red or Green LED: Indium gallium nitride (InGaN), Aluminum gallium arsenide (AlGaAs) Red or Yellow LED : Aluminum gallium indium phosphide (AlGaInP), Aluminum gallium arsenide (AlGaAs) Blue LED : Indium gallium nitride (InGaN)
Description : Which one of the following forms of phosphorus is most reactive? (1) Black phosphorus (2) White phosphorus (3) Violet phosphorus (4) Red phosphorus
Last Answer : (2) White phosphorus Explanation: White phosphorus is the most reactive form of phosphorus. It is made up of discrete P4 tetrahedra which are subjected to very high angular strain as the angles ... reactive. It ignites spontaneously at about 50°C, and at much lower temperatures if finely divided.
Description : Allotropic modifications of phosphorus include each of the following EXCEPT: w) red phosphorus x) black phosphorus y) white phosphorus z) green phosphorus
Last Answer : ANSWER: Z -- GREEN PHOSPHORUS
Last Answer : White phosphorus
Description : Match the oxy-acids of phosphorus listed in column-I with type of bond (s) listed in column -II
Last Answer : Match the oxy-acids of phosphorus listed in column-I with type of bond (s) listed in column -II
Description : Which one of the following is responsible for blue baby syndrome? (1) Fluoride (2) Nitrate (3) Arsenic (4) Lead
Last Answer : (2) Nitrate
Description : Which of the following diseases is caused by the consumption of nitrate contaminated food and water? (1) Minimata disease (2) Osteoporosis (3) Blue baby syndrome (4) Asbestosis
Last Answer : (3) Blue baby syndrome Explanation: Infants under four months of age that drink water or eat food contaminated with high levels of nitrates or nitrites are particularly at risk for ... very rarely if infants eat nitrate-rich spinach which has broken down Into nitrite during storage.
Description : Blue vitriol is chemically (A) Copper sulphate (B) Ferrous sulphate (C) Copper nitrate (D) Aluminium sulphate
Last Answer : (A) Copper sulphate
Description : Which of the following diseases is caused by the consumption of nitrate contaminated food and water ? (1) Minimata disease (2) Osteoporosis (3) Blue baby syndrome (4) Asbestosis
Last Answer : Blue baby syndrome
Description : Is cinnamon oil made from real cinnamon sticks?
Last Answer : Yes, cinnamon oil is made from real cinnamon sticks. You can make cinnamon oil from real cinnamon sticks using olive oil and a jar yourself, which can take up to three weeks. http://www.ehow.com/how_4712450_make-cinnamon-oil.html
Description : The devices crucial to these performances are made out of buffalo-hide and then mounted on to bamboo sticks. The performances are typically based on stories from the Ramayana and the Mahabharata. The other ... oil lamps. Takes its name from the local words for shadow' and skin'. What?
Last Answer : Wayang Kulit (Shadow puppetry from Indonesia).
Description : White Phosphorus may be removed from red Phosphorus by
Last Answer : White Phosphorus may be removed from red Phosphorus by A. sublimation under reduced pressure B. dissolving ... (2)` D. heating with an alkali solution
Description : Red phosphorus may be prepared from white phosphorus by :
Last Answer : Red phosphorus may be prepared from white phosphorus by : A. adding red colour to white ... white phosphorus at high pressure and 473 k temperature
Description : Red and white phosphorus will differ but not in:
Last Answer : Red and white phosphorus will differ but not in: A. smell B. solubility in `CHCl_(3)` ... phosphorescence D. reaction with concentrated `HNO_(3)`
Description : When ethylalcohol reacts with `Br_(2)` in presencce of red phosphorus the compound formed is
Last Answer : When ethylalcohol reacts with `Br_(2)` in presencce of red phosphorus the compound formed is A. `C_(2)H_(6)` B. ` ... C. `CH_(3)Br` D. `C_(2)H_(5)Br`
Description : White phosphorus and Red phosphorus
Last Answer : Find out the difference between : White phosphorus and Red phosphorus
Description : What temperature does red phosphorus burn at?
Last Answer : Feel Free to Answer
Description : Which of the following is incorrect? (a) Red soils are rich in iron (b) Black soils are rich in phosphorus nitrogen and organic matter (c) Alluvial soils are rich in potash but poor in phosphorus (d) Red soils are suitable for cultivation of pulses and coarse grains
Last Answer : Ans: (b)
Description : Of the following statements about the major soil types, the incorrect one is : (a) alluvial soils are easy to plough (b) red soils are rich in phosphorus, nitrogen and lime content ( ... regions which receive heavy seasonal rainfall (d) black soil is highly retentive of moisture and very productive
Description : Red soil is poor in which of the following nutrients ? (A) Phosphorus and Sulphur (B) Phosphorus and Nitrogen (C) Nitrogen and Zinc (D) Nitrogen and Potassium
Last Answer : (D) Nitrogen and Potassium
Description : Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the (A) Presence of an inert atmosphere (B) Presence of a reducing atmosphere (C) Absence of air (D) Presence of an oxidising atmosphere
Last Answer : (C) Absence of air
Description : The color of Red soil is red due to the presence of the which of the following oxides? a. Ferric b. Aluminium c. Phosphorus d. Calcium
Last Answer : a. Ferric
Description : The most reactive allotropic form of phosphorus is __________ phosphorus. (A) Red (B) Yellow (C) Violet (D) Black
Last Answer : (B) Yellow
Description : Red short iron cracks when bent due to the presence of (A) Sulphur (B) Carbon (C) Phosphorus (D) Silicon
Last Answer : Answer: Option A
Description : Explain how yellow phosphorous is converted into red phosphorus.
Last Answer : Conversion of Yellow Phosphorous to Red phosphorous Yellow phosphorus is converted into red phosphorous in covered retorts containing a reflux condenser to retain any evolved phosphorous vapors. The vessel is gradually ... as reaction is exothermic. Reaction P4 (Yellow) + heating = P4 (Red)
Description : (1) aluminium powder and ammonium nitrate Explanation: Ammonal is an explosive made up of ammonium nitrate and aluminium powder. The ammonium nitrate functions as an oxidizer and the aluminium ... a fairly substantial shock, though it is still more sensitive than trinitrotoluene and composition C4.
Last Answer : Gelatin is mostly used in making icecreams in order to - (1) prevent making a colloid (2) stabilise the colloid and prevent crystallisation (3) stabilise mixture (4) enrich the aroma
Description : Led Deighton trilogy Game Set Match What 3 Capitals?
Last Answer : Berlin MexicoLondon
Description : Led Deighton trilogy Game Set Match What 3 Capitals
Description : An organic compound containing one oxygen gives red colour with cerric ammonium nitrate solution , decolourise alkaline `KMnO_(4)` , respond iodoform
Last Answer : An organic compound containing one oxygen gives red colour with cerric ammonium nitrate solution , decolourise alkaline ... underset(||)(O)-CH_(3)` D.
Description : In mirrors the back surface is coated with a thin layer of (1) Mercury (2) Silver (3) Red oxide (4) Silver nitrate
Last Answer : (2) Silver Explanation: In a spherical mirror, one of the two curved surfaces is coated with a thin layer of silver followed by a coating of red lead oxide paint. Thus, one side of the spherical minor is opaque and the other side is a highly polished reflecting surface.
Description : In mirrors the back surface is coated with a thin layer of : (1) Mercury (2) Silver (3) Red oxide (4) Silver nitrate
Last Answer : Silver
Description : What's a sentence/quote that just sticks in your head no matter how hard you try and forget it?
Last Answer : I'm sailing away....
Description : If your car sticks out beyond a parking space is it against the law?
Last Answer : Better to take two spaces. And pay for two in there are parking meters. The law allows for you to use common sense.
Description : What nightmare did you have that still sticks with you to this day?
Last Answer : I once dreamt that I was being pulled apart limb by limb on some sort of torture device
Description : How do you think about the proverb "Sticks and stones may break my bones but words will never hurt me"?
Last Answer : It is something that parents often tell their children when others have hurt their feelings. However, it does little to resolve the distress that emotional bullying produces. Saying this is a dismissal or ... solving the problem. Sadly, this is likely to add to the child's sense of vulnerability.
Description : Why did TSA allow travellers to carry their hockey sticks and golf clubs?
Last Answer : answer:The head of the agency claimed that the real threat is from plastic and liquid explosives. He suggests that now that the cockpit doors are reinforced and locked, there's no need to ... to hostages unless the cabin door was opened, they would be the obvious first choice as captives.
Description : What is the first time doing anything that sticks out most in your mind?
Last Answer : answer:My first (and only) time whitewater rafting. It was a few years ago on the Arkansas River in Colorado. You could tell the guides were anxious and a bit nervous because the river was at record levels ... a natural at it, then not be able to do it again. My favorite hobbies are expensive. damn
Description : Boring question #59: How many of those wooden stir sticks does the average Starbucks Coffee place run through?
Last Answer : I never understood those sticks. When you pour half & half into your coffee, it doesn’t require stirring. And if you are adding sugar to your coffee, why not just walk across the street to Dunkin’ Donuts or 7–11?
Description : Why do dogs like to fetch? And why sticks? There have been questions about generalities, e.g. lately. My dog loves fetching sticks; a total dog stereotype. Why?
Last Answer : perhaps it is the feel in the mouth and the ease of grabbing it. Balls are a bit harder, especially for small mouth boogers. Maybe they like that a stick doesnt bounce. They are more in charge.