What is reduction of oxide with carbon at high temperature called? -General Knowledge

What is reduction of oxide with carbon at high temperature called? -General Knowledge
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What is reduction of oxide with carbon at high temperature called? -General Knowledge

Description : What is reduction of oxide with carbon at high temperature called? -General Knowledge

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What is reduction of oxide with carbon at high temperature called? -General Knowledge

Description : What is reduction of oxide with carbon at high temperature called? -General Knowledge

Last Answer : answer:

Which of the following faction is of no significance for roasting sulphide ores to the oxide and not subjecting the sulphide ores in carbon reduction

Description : Which of the following faction is of no significance for roasting sulphide ores to the oxide and not subjecting the sulphide ores in carbon reduction

Last Answer : Which of the following faction is of no significance for roasting sulphide ores to the oxide and ... are thermodynamically more stable than `CS_(2)`

Why carbon reduction process is not applied for reducing aluminium oxide to aluminium ?

Description : Why carbon reduction process is not applied for reducing aluminium oxide to aluminium ?

Last Answer : Ans. Because aluminium metal itself a very powerful agent and can easily reduce CO formed during the reaction back to carbon. 

Statement-1: The reduction of a metal oxide is easier if the metal formed is in liquid state at the temperature of reduction. Statement-2: The value o

Description : Statement-1: The reduction of a metal oxide is easier if the metal formed is in liquid state at the temperature of reduction. Statement-2: The value o

Last Answer : Statement-1: The reduction of a metal oxide is easier if the metal formed is in liquid state at ... . Statement-1 is false but Statement -2 is true

A sulphide ore is first converted into its oxide before reduction. This is done because :

Description : A sulphide ore is first converted into its oxide before reduction. This is done because :

Last Answer : A sulphide ore is first converted into its oxide before reduction. This is done because : A ... oxide is generally less stable than the metal sulphide

(A) Auto reduction of ore is used for the extraction of copper (R ) The sulphide ore of copper reacts with its oxide to the give the metal

Description : (A) Auto reduction of ore is used for the extraction of copper (R ) The sulphide ore of copper reacts with its oxide to the give the metal

Last Answer : (A) Auto reduction of ore is used for the extraction of copper (R ) The sulphide ore of copper reacts ... . If (A) is incorrect but (R ) is correct

Which of the followigng metal is obtained by the reduction of metal oxide with Hydrogen gas

Description : Which of the followigng metal is obtained by the reduction of metal oxide with Hydrogen gas

Last Answer : Which of the followigng metal is obtained by the reduction of metal oxide with Hydrogen gas A. Cu B. Al C. Mg D. Fe

Which of the following is the primary reason for adding calcium carbonate to the reduction process of iron oxide ores ? The calcium carbonate: w) acts as an oxidizing agent x) removes silicate waste products y) acts as a reducing agent z) removes sulfur waste products

Description : Which of the following is the primary reason for adding calcium carbonate to the reduction process of iron oxide ores ? The calcium carbonate: w) acts as an oxidizing agent x) removes silicate waste products y) acts as a reducing agent z) removes sulfur waste products

Last Answer : ANSWER: X -- REMOVES SILICATE WASTE PRODUCTS

Assertion : Reduction of ZnO with carbon is done at `1100^(@)C`. Reason : At this temperature, `DeltaG^(@)` is negative and the process is spontaneous

Description : Assertion : Reduction of ZnO with carbon is done at `1100^(@)C`. Reason : At this temperature, `DeltaG^(@)` is negative and the process is spontaneous

Last Answer : Assertion : Reduction of ZnO with carbon is done at `1100^(@)C`. Reason : At this temperature, ... ^(@)` is negative and the process is spontaneous.

At which temperature direct reduction of Fe2O3 by carbon is possible ?

Description : At which temperature direct reduction of Fe2O3 by carbon is possible ?

Last Answer : Ans. Above 1123 K, carbon can reduce Fe2O3 

Electrolytic reduction cell used for conversion of calcined Al2O3to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to (A) Achieve very high purity of aluminium (99.9%) (B) Keep the electrolyte in liquid condition by the generation of heat (C) Electrolytically dissociate alumina (D) Both (B) & (C)

Description : Electrolytic reduction cell used for conversion of calcined Al2O3to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to (A) Achieve very high ... by the generation of heat (C) Electrolytically dissociate alumina (D) Both (B) & (C)

Last Answer : (D) Both (B) & (C)

Why are nitrous oxide and carbon dioxide called greenhouse gases?

Description : Why are nitrous oxide and carbon dioxide called greenhouse gases?

Last Answer : Need answer

What does copper oxide produce at high temperature?

Description : What does copper oxide produce at high temperature?

Last Answer : Laboratory preparation of copper oxide:copper salt such as CuSO4 reacts with alkali (NaOH) to generate Cu(OH)2, and then Cu(OH)2 is decomposed by heating to prepare CuO. CuSO4+2NaOH= ... by heating metallic copper in air or decomposing copper hydroxide, copper nitrate, basic copper carbonate, etc.

_________ is the hardest oxide and is hence used where high wear resistance at high temperature is required. (A) Beryllium (B) Zirconia (C) Alumina (D) Magnesia

Description : _________ is the hardest oxide and is hence used where high wear resistance at high temperature is required. (A) Beryllium (B) Zirconia (C) Alumina (D) Magnesia

Last Answer : (C) Alumina

Stainless steel is welded with difficulty because of (A) Its high melting temperature (B) Chances of cracking (C) Oxide film formation (D) Chromium carbide formation

Description : Stainless steel is welded with difficulty because of (A) Its high melting temperature (B) Chances of cracking (C) Oxide film formation (D) Chromium carbide formation

Last Answer : Option C

Can I mix granulated ferric oxide with granulated carbon in a media bag? Or does it have to be separate?

Description : Can I mix granulated ferric oxide with granulated carbon in a media bag? Or does it have to be separate?

Last Answer : It’s the same water that goes through them whether they are separate or not. I had my marine tank in the dark ages, so I am no longer an expert, but it seems to me that carbon is non-reactive, and gfo is already oxidized; I don’t see what difference it can make.

how much % of carbon di oxide , sunlight and water is absorbed by the plant? -Biology

Description : how much % of carbon di oxide , sunlight and water is absorbed by the plant? -Biology

Last Answer : answer:

how much % of carbon di oxide , sunlight and water is absorbed by the plant? -Biology

Description : how much % of carbon di oxide , sunlight and water is absorbed by the plant? -Biology

Last Answer : answer:

Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally?

Description : Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally?

Last Answer : Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most ... C. `SrCO_(3)` D. `BaCO_(3)`

When iron oxide is heated with carbon iron is produced the word equation?

Description : When iron oxide is heated with carbon iron is produced the word equation?

Last Answer : Need answer

Calcium carbonate decomposes into calcium oxide & carbon dioxide Her results:Mass of calcium carbonate before heating = 2.00 g Mass of calcium oxide left after heating = 1.12 g work out the mass of carbon dioxide released during the decomposition?

Description : Calcium carbonate decomposes into calcium oxide & carbon dioxide Her results:Mass of calcium carbonate before heating = 2.00 g Mass of calcium oxide left after heating = 1.12 g work out the mass of carbon dioxide released during the decomposition?

Last Answer : I am not sure of the answer so can someone help me pls

Hard disk is coated in both side with A) Magnetic metallic oxide B) Optical metallic oxide C) Carbon layer D) All of the above

Description : Hard disk is coated in both side with A) Magnetic metallic oxide B) Optical metallic oxide C) Carbon layer D) All of the above

Last Answer : Answer : A

Hard disk is coated in both sides with A) Magnetic metallic oxide B) Optical metallic oxide C) Carbon layer D) All of the above

Description : Hard disk is coated in both sides with A) Magnetic metallic oxide B) Optical metallic oxide C) Carbon layer D) All of the above

Last Answer : Answer : A

Which of the following green house gases has the greatest heat trapping ability? (1) Chlorofluoro carbon (2) Methane (3) Carbon dioxide (4) Nitrous oxide

Description : Which of the following green house gases has the greatest heat trapping ability? (1) Chlorofluoro carbon (2) Methane (3) Carbon dioxide (4) Nitrous oxide

Last Answer : (1) Chlorofluoro carbon Explanation: Gases that trap heat in the atmosphere are called green house gases. Global Warming Potentials (GWPs) are used to compare the abilities of different green house gases to trap ... 1.2. The higher the GWP, the more heat the specific gas can keep in the atmosphere.

The most serious air pollutant causing health hazard is – (1) Sulphur dioxide (2) Carbon monoxide (3) Ozone (4) Nitrogen oxide

Description : The most serious air pollutant causing health hazard is – (1) Sulphur dioxide (2) Carbon monoxide (3) Ozone (4) Nitrogen oxide

Last Answer : (1) Sulphur dioxide Explanation: Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, ... , pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.

Transboundary pollution (or) Acid rain is caused by – (1) Carbon monoxide (2) Carbon dioxide (3) Hydrocarbon (4) Nitrogen oxide and sulphur dioxide

Description : Transboundary pollution (or) Acid rain is caused by – (1) Carbon monoxide (2) Carbon dioxide (3) Hydrocarbon (4) Nitrogen oxide and sulphur dioxide

Last Answer : (4) Nitrogen oxide and sulphur dioxide Explanation: Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions ( ... dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.

Acid rain is caused by, the pollution of environment by - (1) carbon dioxide and nitrogen (2) carbon monoxide and carbon dioxide (3) ozone and carbon dioxide (4) nitrous oxide and sulphur dioxide

Description : Acid rain is caused by, the pollution of environment by - (1) carbon dioxide and nitrogen (2) carbon monoxide and carbon dioxide (3) ozone and carbon dioxide (4) nitrous oxide and sulphur dioxide

Last Answer : (1) carbon dioxide and nitrogen

Acid rain is caused by the pollution of environment by - (1) carbon dioxide and nitrogen (2) carbón monoxide and carbon dioxide (3) ozone and carbon dioxide (4) nitrous oxide and sulphur dioxide

Description : Acid rain is caused by the pollution of environment by - (1) carbon dioxide and nitrogen (2) carbón monoxide and carbon dioxide (3) ozone and carbon dioxide (4) nitrous oxide and sulphur dioxide

Last Answer : (4) nitrous oxide and sulphur dioxide

Acid rain is caused by the pollution of environment by – (1) Carbon monoxide and Carbon dioxide (2) Ozone and Carbon dioxide (3) Nitrous oxide and Sulphur dioxide (4) Carbon dioxide and Nitrogen

Description : Acid rain is caused by the pollution of environment by – (1) Carbon monoxide and Carbon dioxide (2) Ozone and Carbon dioxide (3) Nitrous oxide and Sulphur dioxide (4) Carbon dioxide and Nitrogen

Last Answer : (3) Nitrous oxide and Sulphur dioxide Explanation: Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances ... acidic pollutants, known as acid rain. Human activities are the main cause of acid rain.

Which one of the following group of gases contribute to the "Green House Effect"? (1) Carbon dioxide and Methane (2) Ammonia and Ozone (3) Carbon monoxide and Sulphur dioxide (4) Carbon tetrailouride and Nitrous oxide

Description : Which one of the following group of gases contribute to the "Green House Effect"? (1) Carbon dioxide and Methane (2) Ammonia and Ozone (3) Carbon monoxide and Sulphur dioxide (4) Carbon tetrailouride and Nitrous oxide

Last Answer : (1) Carbon dioxide and Methane Explanation: The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone. When ranked by their direct contribution to the greenhouse ... 72 %, Carbon Dioxide: 9- 26 %, Methane: 4-9 % and Ozone: 3-7 %.

Which gas is used in fire extinguishers? (1) Carbon dioxide (2) Nitrogen oxide (3) Carbon monoxide (4) Sulpher dioxide

Description : Which gas is used in fire extinguishers? (1) Carbon dioxide (2) Nitrogen oxide (3) Carbon monoxide (4) Sulpher dioxide

Last Answer : (1) Carbon dioxide Explanation: Sodium bicarbonate, regular or ordinary used on class B and C fires, was the first of the dry chemical agents developed. In the heat of a fire, it releases a cloud of carbon dioxide that smothers the fire.

Which of the following is usually not an air-pollutant? (1) Hydrocarbons (2) Sulphur dioxide (3) Carbon dioxide (4) Nitrous oxide

Description : Which of the following is usually not an air-pollutant? (1) Hydrocarbons (2) Sulphur dioxide (3) Carbon dioxide (4) Nitrous oxide

Last Answer : (4) Nitrous oxide Explanation: The six air pollutants are carbon monoxide, lead, ground-level ozone, nitrogen dioxide, particulate matter, and sulfur dioxide. The combustion of gasoline and other ... as laughing gas, is used in surgery and dentistry for its an-aesthetic and analgesic effects.

Burning pyrites ore gives out – (1) Carbon dioxide gas (2) Sulphur dioxide gas (3) Nitrogen dioxide gas (4) Nitric oxide gas

Description : Burning pyrites ore gives out – (1) Carbon dioxide gas (2) Sulphur dioxide gas (3) Nitrogen dioxide gas (4) Nitric oxide gas

Last Answer : (2) Sulphur dioxide gas Explanation: The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS9. Pyrite remains in commercial use for the production of sulfur dioxide, for use in such applications as the paper industry, and in the manufacture of sulfuric acid.

The depletion in Ozone layer is caused by - (1) Nitrous oxide (2) Carbon dioxide (3) Chlorofluorocarbons (4) Methane

Description : The depletion in Ozone layer is caused by - (1) Nitrous oxide (2) Carbon dioxide (3) Chlorofluorocarbons (4) Methane

Last Answer : (3) Chlorofluorocarbons Explanation: Chlorofluorocarbons (CFCs), also known as Freon, cause the breakdown of the ozone layer that protects the earth from the sun's ultraviolet (UV) radiation. In the ... depletion in the upper atmosphere, CFCs have been phased out under the Montreal Protocol of 1987.

A powerful eye irritant present in smog is – (1) nitric oxide (2) sulphur dioxide (3) peroxyacetyl nitrate (4) carbon dioxide

Description : A powerful eye irritant present in smog is – (1) nitric oxide (2) sulphur dioxide (3) peroxyacetyl nitrate (4) carbon dioxide

Last Answer : (3) peroxyacetyl nitrate Explanation: Peroxyacetyl nitrate is a secondary pollutant present in photochemical smog. It is thermally unstable and decomposes into peroxyethanoyl radicals and nitrogen dioxide gas. It is a lachrymatory substance.

Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? (1) Chlorofluorocarbons (2) Nitrous oxide (3) Sulphur dioxide (4) Carbon dioxide

Description : Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? (1) Chlorofluorocarbons (2) Nitrous oxide (3) Sulphur dioxide (4) Carbon dioxide

Last Answer : (1) Chlorofluorocarbons Explanation: Chlorofluorocarbon contributes to ozone depletion in the upper atmosphere. It is an organic compound that contains only carbon, chlorine, and fluorine, produced as a ... methane, ethane, propane. Its manufacture has been phased out under the Montreal Protocol.

What among following is used to produce artificial rain? (1) Copper oxide (2) carbon monoxide (3) silver iodide (4) silver nitrate

Description : What among following is used to produce artificial rain? (1) Copper oxide (2) carbon monoxide (3) silver iodide (4) silver nitrate

Last Answer : (3) silver iodide Explanation: Artificial process of making rain is done by precipitation, a process of condensation of water vapors in the air. This is done by using cloud seeding chemicals like potassium iodide, silver iodide, liquid propane or solid carbon dioxide (dry ice).

Lime water turns milky when carbon dioxide is passed through it. It is due to the for mation of: (1) Calcium Carbonate (2) Barium Carbonate (3) Calcium Hydrogen Carbonate (4) Calcium Oxide

Description : Lime water turns milky when carbon dioxide is passed through it. It is due to the for mation of: (1) Calcium Carbonate (2) Barium Carbonate (3) Calcium Hydrogen Carbonate (4) Calcium Oxide

Last Answer : (1) Calcium Carbonate Explanation: When carbon dioxide is passed through lime water for a short time, it turns lime water milky due to formation of a white precipitate of calcium carbonate.

The greenhouse effect is caused by the higher level of which gas in the atmosphere? (1) Carbon monoxide (2) Carbon dioxide (3) Nitrous oxide (4) Sulphur dioxide

Description : The greenhouse effect is caused by the higher level of which gas in the atmosphere? (1) Carbon monoxide (2) Carbon dioxide (3) Nitrous oxide (4) Sulphur dioxide

Last Answer : (2) Carbon dioxide Explanation: The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all ... the absence of the gases. The environmental effects of carbon dioxide are of significant interest.

Acid rain is due to air pollution by - (1) Carbon dioxide (2) Carbon monoxide (3) Methane (4) Nitrous oxide and Sulfur dioxide

Description : Acid rain is due to air pollution by - (1) Carbon dioxide (2) Carbon monoxide (3) Methane (4) Nitrous oxide and Sulfur dioxide

Last Answer : (4) Nitrous oxide and Sulfur dioxide Explanation: The main chemicals in air pollution that create acid rain are sulfur dioxide (SO2) and Nitrous oxide (N2O).

Which of the following gases is present under pressure in soft drinks? (1) Oxygen (2) Nitrogen (3) Carbon dioxide (4) Nitrous oxide

Description : Which of the following gases is present under pressure in soft drinks? (1) Oxygen (2) Nitrogen (3) Carbon dioxide (4) Nitrous oxide

Last Answer : (3) Carbon dioxide Explanation: Carbon dioxide is present under pressure in soft drinks. Carbon dioxide adds that special sparkle and bite to the beverage and also acts as a mild preservative. Carbon ... for soft drinks because it is inert, non-toxic, and relatively inexpensive and easy to liquefy.

What among following is used to produce artificial rain? (1) copper oxide (2) carbon monoxide (3) silver iodide (4) silver nitrate

Description : What among following is used to produce artificial rain? (1) copper oxide (2) carbon monoxide (3) silver iodide (4) silver nitrate

Last Answer : (3) silver iodide Explanation: Artificial rain is produced by spraying clouds with substances like Silver Iodide (costly) or cheaper ones like solid carbon dioxide (dry ice) or even finely powdered Sodium Chloride.

Which of the following is not a greenhouse gas? (1) Hydrogen (2) Carbon dioxide (3) Nitric oxide (4) Chlorofluorocarbon

Description : Which of the following is not a greenhouse gas? (1) Hydrogen (2) Carbon dioxide (3) Nitric oxide (4) Chlorofluorocarbon

Last Answer : (1) Hydrogen Explanation: A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere. that absorbs and emits radiation within the thermal infrared range. This process is the ... System, the atmospheres of Venus, Mars, and Titan also contain gases that cause greenhouse effects.

Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its (A) Elasticity (B) Strength (C) Plasticity (D) Weathering characteristics

Description : Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its (A) Elasticity (B) Strength (C) Plasticity (D) Weathering characteristics

Last Answer : (D) Weathering characteristics

Chemical Name of Dry Ice? A. Solid Carbon Dioxide (Answer) B. Calcium Carbon C. A&B D. Sodium Oxide

Description : Chemical Name of Dry Ice? A. Solid Carbon Dioxide (Answer) B. Calcium Carbon C. A&B D. Sodium Oxide

Last Answer : A. Solid Carbon Dioxide (Answer)

What does TCM stand for in medical terms? A. Techno Circuit Module B. Traditional Chinese medicine (Answer) C. Tetra Carbon Mono oxide

Description : What does TCM stand for in medical terms? A. Techno Circuit Module B. Traditional Chinese medicine (Answer) C. Tetra Carbon Mono oxide

Last Answer : B. Traditional Chinese medicine (Answer)

Which of the following is not including in the Greenhouse gases: C A. Methane B. Carbon dioxide C. Oxygen D. Nitrous Oxide

Description : Which of the following is not including in the Greenhouse gases: C A. Methane B. Carbon dioxide C. Oxygen D. Nitrous Oxide

Last Answer : Oxygen

Which of the following is not including in the Greenhouse gases: C A. Methane B. Carbon dioxide C. Oxygen D. Nitrous Oxide

Description : Which of the following is not including in the Greenhouse gases: C A. Methane B. Carbon dioxide C. Oxygen D. Nitrous Oxide

Last Answer : Oxygen

Greenhouse gas having largest contribution to global warming A) Carbon dioxide (60%) (B) Nitrous oxide (5%) (C) Methane (15%) (D) CFC

Description : Greenhouse gas having largest contribution to global warming A) Carbon dioxide (60%) (B) Nitrous oxide (5%) (C) Methane (15%) (D) CFC

Last Answer : A) Carbon dioxide (60%)