Description : Which of the following minerals is noted for its one perfect cleavage? w) calcite x) muscovite y) quartz z) pyrite
Last Answer : ANSWER: X -- MUSCOVITE
Description : Which of the following is not a pyrite ore? (A) Celestite (B) Galena (C) Gypsum (D) Siderite
Last Answer : (D) Siderite
Description : Which of the following is the hardest material? (A) Calcite (B) Quartz (C) Corundum (D) Gypsum
Last Answer : (C) Corundum
Description : Which of the following is the softest material? (A) Quartz (B) Calcite (C) Corundum (D) Fluorite
Last Answer : (B) Calcite
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 : The nickname, "Fool's Gold," refers to which of th following? w) calcite x) apatite y) fluorite z) pyrite
Last Answer : ANSWER: Z -- PYRITE
Description : __________ is an ore of lead. (A) Quartz (B) Galena (C) Siderite (D) Chalcopyrite
Last Answer : (B) Galena
Description : Which of the following is not a non-metalliferous mineral? (A) Calcite (B) Fluorspar (C) Quartz (D) Cassiterite
Last Answer : (C) Quartz (D) Cassiterite
Description : Which of the following is a metallic ore? (1) Mica (2) Quartz (3) Feldspar (4) Galena
Last Answer : (4) Galena Explanation: Galena is the most abundant lead mineral. It is a metallic, lead-gray mineral with cubic cleavage and a distinctly high density. It belongs to the octahedral sulfide group of minerals with metal ions in octahedral positions.
Description : Which of the following is a metallic ore ? (1) Mica (2) Quartz (3) Feldspar (4) Galena
Last Answer : Galena
Description : Which of the following is easily weatherable mineral a. Quartz b. Gypsum c. Calcite d. Dolomite
Last Answer : c. Calcite
Description : Of the following minerals, the one most resistant to both chemical and mechanical weathering is: w) calcite x) muscovite y) hornblende z) quartz
Last Answer : ANSWER: Z -- QUARTZ
Description : Most cave deposits form from which of the followin minerals? w) hematite x) calcite y) quartz z) none of these
Last Answer : ANSWER: X -- CALCITE
Description : Which of the following materials is the hardest? w) calcite x) silicon carbide y) topaz z) quartz
Last Answer : ANSWER: X -- SILICON CARBIDE
Description : Which of these pairs of minerals are always found in granites? w) muscovite and calcite x) quartz and orthoclase y) hornblende and talc z) augite and magnetite
Last Answer : ANSWER: X -- QUARTZ AND ORTHOCLASE
Description : In geological studies, arkose contains which of th following minerals which gives it a reddish color? w) orthoclase x) calcite y) aragonite (pron: a-rag-o-nite) z) quartz
Last Answer : ANSWER: W -- ORTHOCLASE
Description : Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its (A) Easier grindability (B) Poor grindability (C) High power consumption in grinding (D) None of these
Last Answer : (A) Easier grindability
Description : The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond's law, Rittinger's law and Kick's law) depend upon the (A) Feed material (B) Type of crushing machine (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : Which of the following is the softest material? (A) Talc (B) Feldspar (C) Corundum (D) Calcite
Last Answer : (A) Talc
Description : The hardest material just prior to diamond in Mho's scale is (A) Topaz (B) Carborundum (C) Corundum (D) Calcite
Description : The hardest material just prior to diamond in Mhos scale is (A) Topaz (B) Carborundum (C) Corundum (D) Calcite
Description : Which of the following gives the work required for size reduction of coal to -200 mesh in a ball mill most accurately? (A) Rittinger's law (B) Kick's law (C) Bond's law (D) None of these
Last Answer : (A) Rittinger's law
Description : Which of the following crushing laws is most accurately applicable to the fine grinding of materials? (A) Bond's crushing law (B) Kick's law (C) Rittinger's law (D) None of these
Last Answer : (C) Rittinger's law
Description : Rittinger's crushing law states that (A) Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product (B) Work required to form a ... ) For a given machine and feed, crushing efficiency is dependent on the size of the feed & product
Last Answer : (C) Work required in crushing is proportional to the new surface created
Description : . Which of the following equations is Rittinger's crushing law? (Where P = power required by the machine, m = feed rate, k = a constant, Ds̅a & D̅sb = volume surface mean diameter of feed & product respectively.) (A) P/m = K/ ... K . ln D̅sa /D̅sb (C) P/m = K . (1/ D̅sb - 1/Ds̅a ) (D) None of these
Last Answer : (C) P/m = K . (1/ D̅sb - 1/Ds̅a )
Description : For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to (A) The new surface created (B) The size reduction ratio (C) The change in volume due to crushing (D) None of these
Last Answer : (A) The new surface created
Description : Which of the following gives the crushing energy required to create new surface ? (A) Taggarts rule (B) Fick's law (C) Rittinger's Law (D) None of these
Last Answer : (C) Rittinger's Law
Description : Sulphur removal by heating of pyrite ore in presence of air is called its (A) Reduction (B) Roasting (C) Calcination (D) Smelting
Last Answer : (B) Roasting
Description : furnace slag is mainly molten (A) Sand (B) Magnesium silicate (C) Calcium silicate (D) Iron pyrite
Last Answer : Option C
Description : Pick up the correct statement from the following: (A) The maximum size of a coarse aggregate, is 75 mm and minimum 4.75 mm (B) The maximum size of the fine aggregate, is 4.75 mm and minimum 0.075 mm ( ... having particles of size varying from 0.06 mm to 0.002 mm, is known as silt (D) All the ab
Last Answer : Answer: Option D
Description : The softest material just next to talc in the Mhos scale is (A) Quartz (B) Gypsum (C) Feldspar (D) Fluorite
Last Answer : (B) Gypsum
Description : Which of the following is the hardest material? (A) Topaz (B) Quartz (C) Corundum (D) Fluorite
Description : The softest material just next to talc in the Mho's scale is (A) Quartz (B) Gypsum (C) Feldspar (D) Fluorite
Last Answer : (C) Feldspar
Description : Quartz is a __________ material. (A) Diamagnetic (B) Ferromagnetic (C) Ferroelectric (D) Piezoelectric
Last Answer : Option D
Description : The main ore of thorium is (A) Pitchblende (B) Monazite sand (C) Limonite (D) Galena
Last Answer : (B) Monazite sand
Description : Which of the following minerals is not subjected to magnetic separation method? (A) Rutile (B) Galena (C) Chromite (D) Siderite
Description : Alum is commercially produced from (A) Gypsum (B) Feldspar (C) Galena (D) Bauxite
Last Answer : (D) Bauxite
Description : Which of the following is an ore of iron? (A) Galena (B) Chalcopyrite (C) Hematite (D) Bauxite
Last Answer : (C) Hematite
Description : Aluminium is extracted from (A) Chalcocite (B) Bauxite (C) Galena (D) None of these
Last Answer : (B) Bauxite
Description : What is Pyrite, and is it harmful to anyone and anything?
Last Answer : answer:Pyrite is a mineral – you probably have heard of it as “fool’s gold”. Is it harmful? Well, not if it’s lying around in rocks. Eating handfuls of pyrite is probably not a good idea. Context is important. In what context do you ask about it being harmful?
Description : Which of the following reactions is not involved in extraction of Cu from copper pyrite ?
Last Answer : Which of the following reactions is not involved in extraction of Cu from copper pyrite ? A. `Cu_(2)S * Fe_(2 ... 2)` D. `FeO+ SiO_(2) rarr FeSiO_(3)`
Description : The final step for the extraction of copper from copper pyrite in Bessemer converter involves the reaction
Last Answer : The final step for the extraction of copper from copper pyrite in Bessemer converter involves the reaction A. ` ... D. `2Cu_(2)O+FeSto4Cu+Fe+SO_(2)`
Description : Are lead and pyrite comparable in electrical conductivity?
Last Answer : Generally speaking, no, they are not. Lead is a pretty goodelectrical conductor, but pyrite (iron disulfide), which hasvariable electrical conductivity, might actually be tagged as asemiconductor.
Description : Pyrite (FeS2 ) is used to reclaim
Last Answer : Ans. Saline soils
Description : The pyrite is mostly found in– a) Bihar b) Rajasthan c) Andhra Pradesh d) Maharashtra
Last Answer : d) Maharashtra
Description : The chemical union of iron, oxygen and water forms w) magnetite x) hematite y) limonite z) pyrite
Last Answer : ANSWER: Y -- LIMONITE
Description : "Fool's gold" is a common name for this mineral: w) halite x) cinnabar y) magnetite z) pyrite
Description : Name the sequential steps involved in extraction of copper from its copper pyrite ore.
Last Answer : sequential steps involved in extraction of copper from its copper pyrite ore
Description : CaO is called (A) Quick lime (B) Slaked lime (C) Limestone (D) Calcite
Last Answer : (A) Quick lime