Description : Roasted tin-stone ore after washing with water is known as
Last Answer : Roasted tin-stone ore after washing with water is known as A. Moistuyre is removed B. As ... makes it sutiable for ready reduction to metallic iron.
Description : Method used for the concentration of tin stone ore is
Last Answer : Method used for the concentration of tin stone ore is A. Hand picking B. Froth Floatation C. Magnetic Separation D. Leaching
Description : The main ore of Tin?
Last Answer : Cassiterite
Description : An ore of tin containing `FeCrO_(4)` is concentrated by
Last Answer : An ore of tin containing `FeCrO_(4)` is concentrated by A. Mangetic Separation B. ... floatation process C. Electrotatic method D. Gravity separation
Description : Which of the following minerals are found in a natural way in the State of Chhattisgarh ? 1. Bauxite 2. Dolomite 3. Iron ore 4. Tin Select the correct answer using the code given below : [IAS 2008] (a) 1, 2 and 3 only (b) 1 and 3 only (c) 2 and 4 only (d) 1, 2, 3 and 4
Last Answer : Ans: (d)
Description : Chalcopyrite is the main ore of (A) Copper (B) Lead (C) Tin (D) Iron
Last Answer : (A) Copper
Description : Electrometallurgy is not involved in the extraction of __________ from its ore. (A) Aluminium (B) Tin (C) Lead (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : Cassiterite is an ore of (A) Tin (B) Lead (C) Molybdenum (D) Chromium
Last Answer : (A) Tin
Description : Sphalerite is a primary ore of which of the following metals? w) zinc x) tin y) copper z) iron
Last Answer : ANSWER: W -- ZINC
Description : Which of the following metals is obtained from its most common ore using an electrolytic process? w) nickel x) tin y) aluminum z) manganese
Last Answer : ANSWER: Y -- ALUMINUM
Description : If the ore impurities is (A) Clay, lime stone is used as flux (B) Lime stone, clay is used as flux (C) Quartz, lime stone and argillaceous iron ores are used as flux (D) All the above
Last Answer : Answer: Option D
Description : Three basic raw materials which are needed in large quantities for production of steel are (A) Iron ore, coal and sulphur (B) Iron ore, carbon and sulphur (C) Iron ore, coal and lime stone (D) Iron ore, carbon and lime stone
Last Answer : Answer: Option C
Description : If the iron ore contains clay as an impurity, the flux added during calcination, is (A) Clay (B) Lime stone (C) Argillaceous iron ore (D) All the above
Last Answer : Answer: Option B
Description : The natural resource, known as black gold is – (1) coal (2) lead (3) tin (4) platinum
Last Answer : (1) coal Explanation: The term "coal is a black gold" is just a simple metaphor. Even today, we burn more coal than natural gas, more than nuclear, more than anything.
Description : Which of the following statements best describes the material known as varnished cambric? A. Felted asbestos sealed with varnish. B. Cotton cloth coated with insulating varnish. C. Rubber ... Paper impregnated with mineral oil, specially wrapped with nonmetallic tape, and coated with varnish.
Last Answer : Answer: B
Description : Nickel base alloys with __________ are known as monel metal. (A) Zinc (B) Tin (C) Copper (D) Molybdenum
Last Answer : (C) Copper
Description : The common alloy, babbit metal, which is composed of tin, antimony, and copper, is best known for its use in: w) magnets x) bearings y) dental fillings z) drinking vessels
Last Answer : ANSWER: X -- BEARINGS
Description : The natural resource, known as black gold is (1) coal (2) lead (3) tin (4) platinum
Last Answer : coal
Description : Heating the ore below its melting point in the absence of air I to remove volatile impuri- ties is known as?
Last Answer : Calcination
Description : Substance added to ore to remove impuri- ties is known as?
Last Answer : Flux
Description : Kudremukh hills known for iron ore deposits is situated in which place? -Do You Know?
Last Answer : answer:
Description : Ankaleshwar in India is known for the production of: [NDA 2002] (a) bauxite (b) coal (c) iron ore (d) petroleum
Description : Heating of a ore below its melting point in the absence of air is known as – (1) Refining (2) Calcination (3) Roasting (4) Smelting
Last Answer : (2) Calcination Explanation: Calcination involves simple decomposition of ore on heating below its melting point usually in absence of air to produce new compounds having higher percentage of ... as removing the moisture, organic matter and volatile impurities. Calcination makes the ore porous.
Description : Kudremukh hills known for iron ore deposits is situated in which place?
Last Answer : Chickmaglur
Description : Which state was known as Lone Star Republic? (a) California (b) Texas (c) Ore gone
Last Answer : b) Texas
Description : Heating of a ore below its melting point in the absence of air is known as (1) Refining (2) Calcination (3) Roasting (4) Smelting