What Metal that burns brightly in oxygen but does not react with water?

What Metal that burns brightly in oxygen but does not react with water?
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The base of an electric iron is brightly polished mainly - (1) to make it smooth and frictionless (2) to make it rust-proof (3) to reduce heat loss by radiation (4) to make it more durable

Description : The base of an electric iron is brightly polished mainly - (1) to make it smooth and frictionless (2) to make it rust-proof (3) to reduce heat loss by radiation (4) to make it more durable

Last Answer : (3) to reduce heat loss by radiation Explanation: Polished surfaces are poor radiators of heat. So loss of heat on that account is reduced and the electric iron remains hotter than otherwise.

The base of an electric iron is brightly polished mainly - (1) to make it smooth and frictionless (2) to make it rust-proof (3) to reduce heat loss by radiation (4) to make it more durable

Description : The base of an electric iron is brightly polished mainly - (1) to make it smooth and frictionless (2) to make it rust-proof (3) to reduce heat loss by radiation (4) to make it more durable

Last Answer : (3) to reduce heat loss by radiation Explanation: Polished surfaces are poor radiators of heat. So loss of heat on that account is reduced and the electric iron remains hotter than otherwise.

The ground detection system, shown in the illustration for a low-voltage, threephase system has a ground in line 'A'. Therefore, lamp 'A' will burn ____________. EL-0009 A. dimly or be out, and lamps 'B' and 'C' will burn brightly B. normally, and lamps 'B' and 'C' will burn dimly or be out C. brightly, and lamps 'B' and 'C' will burn dimly or be out D. brightly, and lamps 'B' and 'C' will burn normally

Description : The ground detection system, shown in the illustration for a low-voltage, threephase system has a ground in line 'A'. Therefore, lamp 'A' will burn ____________. EL-0009 A. dimly or be out, and lamps 'B' and ... and 'C' will burn dimly or be out D. brightly, and lamps 'B' and 'C' will burn normally

Last Answer : Answer: A

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Description : Wind pollinated flowers are (a) small, brightly coloured, producing large number of pollen grains (b) small, producing large number of dry pollen grains (c) large producing abundant nectar and pollen (d) small, producing nectar and dry pollen

Last Answer : (b) small, producing large number of dry pollen grains

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Description : Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread ? A. Temperature of about 25°C B. Temperature of about 5°C C. Relative humidity of about 5% D. Relative humidity of about 95% ... b) A, C and E only (c) A, D and E only (d) B, D and E only

Last Answer : (c) A, D and E only

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Description : Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains? a. 40 W bulb b. 60 W blub c. 100 W blub d. all will burn equally brightly

Last Answer : a. 40 W bulb

Why is water not suitable for putting out a petrol fire? (1) The oxygen content of water is isolated by petrol and thus it helps in burning (2) Petrol is too inflammable to be extinguished by water (3) The heat required for combustion of petrol is very low (4) Water, being heavy, slips below petrol which thus remains in contact with air and burns

Description : Why is water not suitable for putting out a petrol fire? (1) The oxygen content of water is isolated by petrol and thus it helps in burning (2) Petrol is too inflammable to be extinguished by ... very low (4) Water, being heavy, slips below petrol which thus remains in contact with air and burns

Last Answer : (4) Water, being heavy, slips below petrol which thus remains in contact with air and burns Explanation: Water is not effective on petrol fire because it has higher density than ... while petrol stays afloat and keeps burning. Petrochemical fires are nearly always extinguished with chemical foam.

Why is water not suitable for putting out a petrol fire? (1) The oxygen content of water is isolated by petrol and thus it helps in burning (2) Petrol is too inflammable to be extinguished by water (3) The heat required for combustion of petrol is very low (4) Water, being heavy, slips below petrol which thus remains in contact with air and burns

Description : Why is water not suitable for putting out a petrol fire? (1) The oxygen content of water is isolated by petrol and thus it helps in burning (2) Petrol is too inflammable to be extinguished by ... very low (4) Water, being heavy, slips below petrol which thus remains in contact with air and burns

Last Answer : (4) Water, being heavy, slips below petrol which thus remains in contact with air and burns Explanation: Water is not effective on petrol fire because it has higher density than petrol as a ... extinguished with chemical foam which forms a blanket over the flames and cuts off the oxygen supply.

Why is water not suitable for putting out a petrol fire ? (1) The oxygen content of water is isolated by petrol and thus it helps in burning (2) Petrol is too inflammable to be extinguished by water (3) The heat required for combustion of petrol is very low (4) Water, being heavy, slips below petrol which thus remains in contact with air and burns

Description : Why is water not suitable for putting out a petrol fire ? (1) The oxygen content of water is isolated by petrol and thus it helps in burning (2) Petrol is too inflammable to be extinguished by ... very low (4) Water, being heavy, slips below petrol which thus remains in contact with air and burns 

Last Answer : Water, being heavy, slips below petrol which thus remains in contact with air and burns

What colour Residue will be formed when Magnesium burns in oxygen?

Description : What colour Residue will be formed when Magnesium burns in oxygen?

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When 9.OO g C6H12O6 burns with excess oxygen how many grams of CO2 will be made?

Description : When 9.OO g C6H12O6 burns with excess oxygen how many grams of CO2 will be made?

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Description : Zinc granules on treating with an acid X, form the zinc sulphate (ZnSO4) salt along with the evolution of a gas Y which burns with a pop sound when brought near to a burning candle. Identify the acid X and ... (c). X- Sulphuric acid and Y- Hydrogen gas (d). X- Hydrochloric acid and Y- Hydrogen gas

Last Answer : (c). X- Sulphuric acid and Y- Hydrogen gas

Once every year a farmer walks about on his farm property, picks out his favorite tree, and chops it down with an axe. He then drags the tree home and puts it in a metal bowl. The farmer then spends time lovingly caring for the tree by watering it every day and providing it with the best plant food money can buy to keep it as healthy as possible. Two weeks later he throws the tree outside, sets it on fire, and burns it to a crisp. How can you explain this apparent drastic change in the farmer's mood toward this tree? -Riddles

Description : Once every year a farmer walks about on his farm property, picks out his favorite tree, and chops it down with an axe. He then drags the tree home and puts it in a metal bowl. The farmer ... a crisp. How can you explain this apparent drastic change in the farmer's mood toward this tree? -Riddles

Last Answer : The man owns a Christmas tree farm where he grows thousands of Christmas trees for sale to the public. He is simply performing his annual Christmas ritual of selecting a tree, placing it in a tree stand, keeping it healthy for two weeks, and then disposing of it.

Which metal burns to produce bright yellow flame ?

Description : Which metal burns to produce bright yellow flame ?

Last Answer : Burning sodium produces a bright yellow flame.

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Description : Why is it that calcium is a soft grey metal that reacts quickly with water. Our bones contain calcium but they are not grey in colour and do not react with water?

Last Answer : Bones contain hydroxyapatite - Ca10(PO4)6(OH)2., not pure calcium.

Statement I Nitrogen and oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen. Statement II The reaction

Description : Statement I Nitrogen and oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen. Statement II The reaction

Last Answer : Statement I Nitrogen and oxygen are the main components in the atmosphere but these do not react ... D. Both are assertion and reason are incorrect

Statement I Nitrogen and oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen. Statement II The reaction

Description : Statement I Nitrogen and oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen. Statement II The reaction

Last Answer : Statement I Nitrogen and oxygen are the main components in the atmosphere but these do not react ... D. Both are assertion and reason are incorrect

Do Chemical weathering occurs when the minerals in a rock react to water oxygen or acids in the environment.?

Description : Do Chemical weathering occurs when the minerals in a rock react to water oxygen or acids in the environment.?

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The Classical example of redox reaction is Combustion of fossil fuel. During combustion of fossil fuels, the carbon compound in the fossil fuel reacts with oxygen in the presence of a heat source to form carbon dioxide (CO 2 ) and water. Energy is also needed for the fossil fuel to react with oxygen, so the energy used in portion of combustion is an endothermic reaction.

Description : The Classical example of redox reaction is Combustion of fossil fuel. During combustion of fossil fuels, the carbon compound in the fossil fuel reacts with oxygen in the presence of a heat source to ... to react with oxygen, so the energy used in portion of combustion is an endothermic reaction.

Last Answer : Combustion of fossil fuel

What metal is used for water pipes because they don't react with water?

Description : What metal is used for water pipes because they don't react with water?

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During neutralization reaction acids react with ........to form ........and water. (a) Metals ,Gas (b) Bases, Salt (c) Non-Metal , Salt (d)Acids ,Salts

Description : During neutralization reaction acids react with ........to form ........and water. (a) Metals ,Gas (b) Bases, Salt (c) Non-Metal , Salt (d)Acids ,Salts

Last Answer : (b) Bases, Salt

When water and an active metal react, what are the tw products that result?

Description : When water and an active metal react, what are the tw products that result?

Last Answer : ANSWER: HYDROGEN AND A BASE (HYDROXIDE)

Shouldn't H2O be in liquid state after hydrogen and oxygen react?

Description : Shouldn't H2O be in liquid state after hydrogen and oxygen react?

Last Answer : Never mind, I figured it out: When hydrogen burns in oxygen it produces water in some form and heat. Now what form would the water take if it were really hot? A gas. Now, what will the water ... phase after the reaction. And most of the water really will condense to the liquid phase as it cools.

Where does oxygen react with digested food ?

Description : Where does oxygen react with digested food ?

Last Answer : Oxygen reacts with digested food in the body cells.

What do the group 1 elements form when when they react with oxygen?

Description : What do the group 1 elements form when when they react with oxygen?

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What type of bond occurs when calcium atoms react with oxygen atoms?

Description : What type of bond occurs when calcium atoms react with oxygen atoms?

Last Answer : The bonds are ionic.

What happened when metals react with oxygen in the air?

Description : What happened when metals react with oxygen in the air?

Last Answer : idk idrc tbh

(1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, react in the atmosphere in the presence of sunlight containing ultra violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3

Description : (1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, ... violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3

Last Answer : Water is not effective in extinguishing a fire caused by petrol because - (1) the flame is too hot for water to cool it down (2) water and petrol react chemically (3) water and petrol are ... (4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn

Which of the following metals does NOT react with oxygen even at a high temperature? (1) Aluminium (2) Silver (3) Lead (4) line

Description : Which of the following metals does NOT react with oxygen even at a high temperature? (1) Aluminium (2) Silver (3) Lead (4) line

Last Answer : (2) Silver Explanation: Silver and gold do not react with oxygen even at high temperatures as they are less reactive and are placed below the reactivity series.

Write the names of three metals which do not react with oxygen:?

Description : Write the names of three metals which do not react with oxygen:?

Last Answer : Silver; Platinum; Gold

In Borax bead test, metal oxides react with `B_(2)O_(3)` and form a coloured bead. This bead contains

Description : In Borax bead test, metal oxides react with `B_(2)O_(3)` and form a coloured bead. This bead contains

Last Answer : In Borax bead test, metal oxides react with `B_(2)O_(3)` and form a coloured bead. This bead ... B. metaborate ion C. double oxide D. tetraborate ion

When equal weight of methyl alcohol and ehtyl alcohol react with excess of sodium metal, the volume of `H_(2)` liberated is more in the case of

Description : When equal weight of methyl alcohol and ehtyl alcohol react with excess of sodium metal, the volume of `H_(2)` liberated is more in the case of

Last Answer : When equal weight of methyl alcohol and ehtyl alcohol react with excess of sodium metal, the volume of `H_(2 ... in both D. `H_(2)` is not liberated

Two organic compound A and B react with sodium metal and release `H_(2)` gas. A and B react with each other to give ethyl acetate. The A and B are

Description : Two organic compound A and B react with sodium metal and release `H_(2)` gas. A and B react with each other to give ethyl acetate. The A and B are

Last Answer : Two organic compound A and B react with sodium metal and release `H_(2)` gas. A and B react with each other ... (3)OH` D. `CH_(3)COOH " and " HCOOH`

During the extraction of Ag and using a KCN solution and Zn, cyanide ions and Zn react with metal ion as respectively

Description : During the extraction of Ag and using a KCN solution and Zn, cyanide ions and Zn react with metal ion as respectively

Last Answer : During the extraction of Ag and using a KCN solution and Zn, cyanide ions and Zn react with metal ... acid C. A reducing agent D. A complexing agent

Which of the following reagents will react with propene? (a) Hot alkaline KMnO4 (b) Sodium metal (c) Cold dilute HNO3 (d) LiAlH4

Description : Which of the following reagents will react with propene? (a) Hot alkaline KMnO4 (b) Sodium metal (c) Cold dilute HNO3 (d) LiAlH4

Last Answer : Hot alkaline KMnO4

I have a black discoloration on the left corner of my bottom lip. It doesn't itch but it burns alot. It feels swollen but it's not. The discoloration has been there for about 1 year and the burning has been there for 2 months and seems internal with no physical signs of a blister. I've been on Lipitor and Toprol for over 5 years. I don't know if this could be a side effect. Any ideas/suggestions? I am 53 years old.

Description : I have a black discoloration on the left corner of my bottom lip. It doesn't itch but it burns alot. It feels swollen but it's not. The discoloration has been there for about 1 year and the burning has ... years. I don't know if this could be a side effect. Any ideas/suggestions? I am 53 years old.

Last Answer : Some sort of infection. Go to the doctor and get it biopsied.

Iron roof and glass walls, burns and burns but never falls.What is it? -Riddles

Description : Iron roof and glass walls, burns and burns but never falls.What is it? -Riddles

Last Answer : A lantern.

Which gas burns by itself but does not help others to burn ?

Description : Which gas burns by itself but does not help others to burn ?

Last Answer : Hydrogen gas burns on its own but does not help others to burn.

Burning in the toilet for a long time ? I am 18 years old. My toilet has been burning on the street for three years. No blood goes. But very irritating. Urine and frequent burns. Even if you sit like this for a long time, your anus burns. The toilet is not very tan, but it burns. It looks like a sack that encloses with a drawstring. Please tell, whats the story of them big puppys .....

Description : Burning in the toilet for a long time ? I am 18 years old. My toilet has been burning on the street for three years. No blood goes. But very irritating. Urine and frequent burns. Even if you sit ... like a sack that encloses with a drawstring. Please tell, whats the story of them big puppys .....

Last Answer : It causes burning sensation in the urine due to your urinary tract infection. But itching or burning in the anus can be due to various reasons. The most common causes of this problem are high humidity , mild ... of water , do not eat fried or televaja food. Do not eat stale food in the market.

Which of the following statement(s) is/are true concerning the role of antibiotics in wound care? a. Systemic antibiotics are indicated for all open wounds b. Bacterial resistance can occur with systemic but not topical antibiotics c. An indication for systemic antibiotic administration is a granulation tissue bacterial count in excess of greater than 105 organisms/gram of tissue on quantitative analysis d. Silver sulfadiazine is useful only for the management of burns

Description : Which of the following statement(s) is/are true concerning the role of antibiotics in wound care? a. Systemic antibiotics are indicated for all open wounds b. Bacterial resistance can occur with ... of tissue on quantitative analysis d. Silver sulfadiazine is useful only for the management of burns

Last Answer : Answer: c The role of antibiotics in wound care is controversial. All open wounds are colonized with bacteria. Only when surrounding tissue is invaded (cellulitis) are systemic antibiotics clearly ... of relevant drug-resistant plasmids in bacteria, and its low cost make it a good choice

Who wrote the book "The water that burns fire" ?

Description : Who wrote the book "The water that burns fire" ?

Last Answer : Helal Hafeez is the author of the book of poetry "Fire that burns in water".

Burns caused by steam are much more severe than those caused by boiling water because

Description : Burns caused by steam are much more severe than those caused by boiling water because

Last Answer : Steam has latent heat

Burns caused by steam are much severe than those caused by boiling water because – (1) Steam pierces through the pores of body quickly (2) Steam has latent heat (3) Steam is gas and engulfs the body quickly (4) Temperature of steam is higher

Description : Burns caused by steam are much severe than those caused by boiling water because – (1) Steam pierces through the pores of body quickly (2) Steam has latent heat (3) Steam is gas and engulfs the body quickly (4) Temperature of steam is higher

Last Answer : (2) Steam has latent heat Explanation: When water changes into steam, it absorbs latent heat, and when steam condenses to form water, it gives out an equal amount of latent heat. Bums caused ... boiling water, simply because steam contains more heat (in the form of latent heat) than boiling water.

Steam at 100°C causes more severe burns than water at 100° C because – (1) steam has no specific heat capacity (2) steam has latent heat of vaporization (3) water has no specific heat capacity (4) water has latent heat of fusion

Description : Steam at 100°C causes more severe burns than water at 100° C because – (1) steam has no specific heat capacity (2) steam has latent heat of vaporization (3) water has no specific heat capacity (4) water has latent heat of fusion

Last Answer : (2) steam has latent heat of vaporization Explanation: It is because steam releases its latent heat as it condenses, which is substantial. The heat of vaporization of steam is over 2000 J per gram. And when it releases that it's then 100 degree water, the same as boiling water.

Which of the following produces more severe burns? (1) Boiling water (2) Hot water (3) Steam (4) Melting Iceberg

Description : Which of the following produces more severe burns? (1) Boiling water (2) Hot water (3) Steam (4) Melting Iceberg

Last Answer : (3) Steam Explanation: A burn is an injury to the body's tissue resulting from heat, chemicals, electricity or sunlight. Burns are often classified as first degree (those causing damage to the ... deepest and most severe damage destruction of all layers of the skin and damage to tissues underneath.

Why does steam cause more severe burns than boiling water?

Description : Why does steam cause more severe burns than boiling water?

Last Answer : Ans: The amount of heat (latent heat) possessed by steam is much greater than the amount of heat possessed by water at the same temperature. Therefore, steam causes more severe burns than boiling water