Description : Minerals from which metals can be extracted economically and easily are called ores. The extraction of metals from theirs ores involves the following
Last Answer : Minerals from which metals can be extracted economically and easily are called ores. The ... . D. roasting followed by electrolytic reduction.
Last Answer : Minerals from which metals can be extracted economically and easily are called ores. The extraction of metals from ... 2)S+2Cu_(2)O rarr 6Cu+SO_(2)`
Description : Sulfide ores are common for the metals.
Last Answer : Sulfide ores are common for the metals. A. Ag,Cuand Pb B. Ag ,Cu and Sn C. Ag,Mg and Pb D. Al.Cu and Pb
Description : (A) All minerals are ores (R ) Ores are minerals from which metal can be extracted convenitly and economically
Last Answer : (A) All minerals are ores (R ) Ores are minerals from which metal can be extracted convenitly and ... If (A) is incorrect but (R ) is correct
Description : The study of metals and the overall process by which metals are extracted from its ores are called?
Last Answer : Metallurgy
Description : Assertion: `Ag` and `Au` are extracted by leaching the ores with a dilute solution of `NaCN`. Reason: Impurities associated with these ores dissolve i
Last Answer : Assertion: `Ag` and `Au` are extracted by leaching the ores with a dilute solution of `NaCN`. ... . Statement-1 is false but Statement -2 is true
Description : Metallic gold ferquently is found is aluminosilicate rocks and it is finely dispersed among other minerals. It may be extracted by treating the crushe
Last Answer : Metallic gold ferquently is found is aluminosilicate rocks and it is finely dispersed ... hydrometallurgical extraction D. purification of metal.
Last Answer : Metallic gold ferquently is found is aluminosilicate rocks and it is finely dispersed among other minerals. It may be ... agent. D. (A) and ( C) both
Description : Metallic gold frequently is found is aluminosilicate rocks and it is finely dispersed among other minerals it may be extracted by treating the crushed
Last Answer : Metallic gold frequently is found is aluminosilicate rocks and it is finely dispersed among other minerals it may be ... ) rarr Zn[(CN)_(4)]^(-)`
Description : Statement-I : All the ores are mineral Statement-II : Most of the ores contains metals in combined state
Last Answer : Statement-I : All the ores are mineral Statement-II : Most of the ores contains metals in combined state
Description : Which of the following pairs is not correctly matched with respect to the extraction of metals from their ores ?
Last Answer : Which of the following pairs is not correctly matched with respect to the extraction of metals from ... -Aluminium and tin from their oxides ores .
Description : Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite `(CuSO
Last Answer : Copper is the most noble of first row transition metals and occurs in small deposits in serveral ... -reduction. Iron is removed from chalcopyrite as.
Last Answer : Copper is the most noble of first row transition metals and occurs in small deposits in ... self-reduction. Partial roasting of chalcopyrite produces
Description : Statement-1: Auto reduction of ores is used for cinnabar, copper glance and Galena ores Statement-2:The sulphide ores of these metals react with their
Last Answer : Statement-1: Auto reduction of ores is used for cinnabar, copper glance and Galena ores Statement-2: ... Statement-1 is false but Statement -2 is true
Description : The process of extraction of metals from their ores; and then refining them for use is known as?
Last Answer : metallurgy
Description : How the most electropositive metals are isolated from their ores ?
Last Answer : Ans. The most electropositive metals are isolated from their ores by electrolysis of fused ionic salts.
Description : How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca
Last Answer : How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca
Description : Highly electropositive metals can not be extracted by carbon reduction process because these :
Last Answer : Highly electropositive metals can not be extracted by carbon reduction process because these : A. Metals ... D. Loss of metal is more by vaporisation
Description : Metals which can be extracted by smelting process are :
Last Answer : Metals which can be extracted by smelting process are : A. Zns B. Al C. Pb D. Fe
Description : Metals extracted from sea water?
Last Answer : Magnesium and sodium
Description : Which metals are generally extracted by electrolyte process? Which positions these metals generally occupy in the periodic table?
Last Answer : Ans. : Electrolytic process is used for the extraction of active metals like Na, Ca, Mg, K, Al etc. where all other methods fail. Except Al and few other metals, these metals belongs to S-block elements of periodic table.
Description : Which of the following ores does not contain iron? (1) Haematite (2) Magnetite (3) Limonite (4) Cassiterite
Last Answer : (4) Cassiterite
Description : Does anyone here know what the lewis dot structure is for boron sulfide?
Last Answer : Try looking up “Lewis Dot Structure” on a search engine and see if that “rings a bell”.
Description : In what way is sulfide ore thickened ?
Last Answer : Sulfide ore is thickened by floating oil foam.
Description : What happens when sodium sulfide and cadmium nitrate are mixed?
Last Answer : Need answer
Description : How many lead ions would surround each sulfide ions?
Last Answer : 18
Description : How many atoms does one formula unit of gold sulfide have altogether?
Last Answer : The chemical formula of gold sulfide is Au2S; three atoms are here.
Description : What is cation charge of mercury II sulfide?
Description : How many sulfide ions surrounds the each lead ion?
Description : What differences in molecular structure might cause water to form hydrogen bonds while hydrogen sulfide does not form such bonds?
Last Answer : What is the answer ?
Description : In molecule of calcium sulfide calcium has two valence electron bonds and a sulfur atom has six valence electrons. How many lone pairs of electrons are present in the Lewis structure of calcium?
Description : What is the formula for mercury (I) sulfide?
Last Answer : Mercury Sulfide is a compound composed of Mercury and sulfur andthe molecular formula is HgS.
Description : What is the formula for Vanadium (V) sulfide?
Last Answer : vanadium2sulfide5
Description : Which compound is responsible for the rotten egg smell? w) sulfuric acid x) putrescine y) hydrogen sulfide z) sulfur dioxide
Last Answer : ANSWER: Y -- HYDROGEN SULFIDE (NOTE: putrescine is a real compounz)
Description : How many electron lone pairs are on the central atom in Hydrogen Sulfide?
Last Answer : ANSWER: TWO
Description : Can space junk be mined for metals and minerals?
Last Answer : Right now the cost to do it would outweigh what they could get for it. And it can also be pretty dangerous I would guess, too. It would be a good idea to get it down. What kinds of materials are ... I could imagine how some of our frenemies would feel if we snaked some of their old stuff to look at.
Description : After all of the minerals/metals are mined in the planet then what?
Last Answer : Next, we start mining the landfills.
Description : Minerals, metals, and fossil fuels are which type of resources of energy?
Last Answer : Minerals, metals, and fossil fuels are which type of resources of energy? A. Renewable B. Non-renewable C. Biodegradable D. Degradable
Description : In which of the following pair(s) the minerals are converted in to metals by self-reduction process?
Last Answer : In which of the following pair(s) the minerals are converted in to metals by self-reduction process? A. `Cu_(2)S, ... `PbS, ZnS` D. `Ag_(2)S, Cu_(2)S`
Description : Which one of the following does not deal with export promotion? (1) Trade Development Authority (2) Minerals and Metals Trading Corporation (3) Cooperative Marketing Societies (4) Slate Trading Corporation of India
Last Answer : (3) Cooperative Marketing Societies Explanation: According to the Reserve Bank of India, co-operative marketing is a co-operatove association of cultivators formed primarily for the purpose of helping ... based. The commodity-based societies related to grapes, oranges, banana, pomegranate, etc.
Description : Minerals and metals are (a) biodegradable resources (b) renewable (c) non-renewable (d) renewable and non-renewable resources
Last Answer : (d) renewable and non-renewable resources.(1992)
Description : Cinnabar, pyrite and galena are minerals which consist of one or more metals combined with the same element. Which one of the following is the element that is common to all three of these minerals? Is it: w) iron x) copper y) sulfur z) sodium
Last Answer : ANSWER: C-- SULFUR
Description : ‘Different regions of India contain different minerals’. What is the reason behind it? -SST 10th
Last Answer : It happens because of the difference in the geological structure, processes and time involved.
Description : What minerals does nutsha contain ?
Last Answer : Natesha has iron content.
Description : What minerals do raw bananas contain ?
Last Answer : Raw bananas contain iron.
Description : $ Minerals such as carbonates and phosphates acts as buffers. ! Biomolecules contain only 25 elements out of the 109 known elements.
Last Answer : $ Minerals such as carbonates and phosphates acts as buffers. ! Biomolecules contain only 25 elements out of ... wrong D. If both As and R are wrong.
Description : Are The calories from alcohol contain no vitamins minerals or any other useful nutrients?
Last Answer : Xiao piao piao
Description : The growth of seedling plants after transplantation will not always be proper because (a) New soil may not contain the required minerals (b) During transplantation root hairs get damaged (c) Roots cannot penetrate deep into the soil (d) Of all factors stated above
Last Answer : Ans:(d)
Description : Pick up the in-correct statement from the following: The soils which contain montmorillonite minerals (A) Swell more when wet (B) Shrink more when dry (C) Possess high plasticity (D) Possess high coefficient of internal coefficient
Last Answer : (D) Possess high coefficient of internal coefficient
Description : Which one of the following minerals does NOT contain silica tetrahedrons? w) quartz x) muscovite y) halite z) orthoclase
Last Answer : ANSWER: Y -- HALITE