Description : __________ is an ore concentrating metallurgical process involving a chemical change. (A) Electromagnetic separation (B) Froth floatation (C) Roasting (D) None of these
Last Answer : (C) Roasting
Description : The earthy impurities present in the ore are called?
Last Answer : Gangue
Description : Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove the volatile impurities ,During r
Last Answer : Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to ... molten slag `Fe_(2)(SiO_(3))_(3)`
Last Answer : Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove ... is A. 10 B. 20 C. 30 D. 40
Last Answer : Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove ... C` C. `FeC_(3)` D. `Fe_(2)C`
Description : Flux addition during smelting of ore is done to (A) Remove impurities/gangue (B) Enhance rate of reaction (C) Accelerate reduction of ore (D) Separate slag from metal
Last Answer : (A) Remove impurities/gangue
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 : Pick up the correct statement from the following: (A) Roasting is not necessary if iron ore is an oxide (B) Impurities float on the molten iron as slag (C) The slag contains lime about 45% (D) All the above
Description : Pick up the correct statement from the following: (A) In basic Bessemer process, the steel heats the converter (B) In open-hearth process, the furnace heats the steel (C) In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore (D) All the above
Description : The correct sequence of steps involved in extraction of metal from its ore is a) removal of impurities, purify metal, reduction of ore b) purify metal, removal of impurities, reduction of metal ore . c ... of metal , reduction d) removal of impurities from ore , reduction of ore , refining of metal
Last Answer : d) removal of impurities from ore , reduction of ore , refining of metal
Description : Which of the following refers to an easily melted product of the reaction between the flux and the impurities of an ore? w) slag x) slurry y) slug z) none of the above
Last Answer : ANSWER: W -- SLAG
Description : Which of the following is an undesirable property of slag produced during the Pyrometallurgical method of metal extraction from its ore? (A) High fusibility & fluidity (B) High thermal conductivity (C) Low density (D) High chemical activity
Last Answer : B) High thermal conductivity
Description : The presence of impurities in iron (A) Increases its melting point (B) Does not affect its melting point (C) Decreases its melting point (D) Makes it malleable
Last Answer : (C) Decreases its melting point
Description : Statement-I : Lead, tin and bismuth are purified by liquation method. Statement-II : Lead, tin and bismuth have low m.p as compared to impurities.
Last Answer : Statement-I : Lead, tin and bismuth are purified by liquation method. Statement-II : Lead, tin and bismuth have low m.p as compared to impurities.
Description : The degree of dissociation of an electrolyte depends on - (1) dilution (2) impurities (3) atmospheric pressure (4) method of dissolution
Last Answer : (1) dilution Explanation: The extent to which an electrolyte dissociates into ions is known as degree of dissociation or ionization and depends upon the following factors: (1) Nature of the electrolyte, (2) Temperature, (3) Dilution, (4) nature of the solvent, and (e) presence of other ions.
Description : The degree of dissociation of an electrolyte depends on (1) dilution (2) impurities (3) atmospheric pressure (4) method of dissolution
Last Answer : dilution
Description : Ore concentration by froth floatation utilises the __________ of oreparticles. (A) Density difference (B) Wetting characteristics (C) Terminal velocities (D) None of these
Last Answer : (B) Wetting characteristics
Description : The process of dividing a total market into market groups so that persons within each group have relatively similar product needs is called: A)segmenting B)differentiating C)target marketing D)concentrating
Last Answer : A)segmenting
Description : Why do people stick their tongue out while concentrating?
Last Answer : answer:The tongue has one of the largest representations both in motor cortex and sensory cortex of any appendage. Read the link. When the brain is concentrating on a motor and sensory skill combined, is ... occurs for some people. It is common to see this in kids/adults with sensory disorders, too.
Description : In the recent New York Times explosive opinion piece on the Trump Administration, isn't it more important to address these concerns rather than supply Trump with another diversion by concentrating on a witch hunt?
Last Answer : I’m not sure I understand what it is you are asking.
Description : Have you or anyone you know recently been experiencing "fuzzy" or "spacey" lightheadedness? Trouble concentrating?
Last Answer : Yes. I have an ensure twice a day and eat enough to fuel my brain. So most of my dizziness is gone. I have also stopped drinking milk and pop for 5 months now. I don’t drink coffee or energy drinks.
Description : What are you concentrating on these days?
Last Answer : Catching up on my coding, Java, and css to build a better mousetrap than this place.
Description : Would it be feasible for someone with ADHD to have no trouble concentrating?
Last Answer : answer:Assuming that you are talking about Attention Deficit Hyperactivity Disorder (ADHD), here are 10 problems that could indicate adult ADHD. From WebMD I think you can make a genereal and informal ... diagnosis (used in school or testing situations, for example) has to come from a doctor.
Description : I'm a very visual person. Any tips for concentrating on what I hear and not getting distracted by what I see?
Last Answer : answer:Taking notes will help. You have to kook down at the peper or the screen and it will keep you from getting visually distracted. When listening to someone, you could close your eyes. Don’t owrry about audio books. I can’t ever get into them either.
Description : Any tips for concentrating on homework?
Last Answer : I find two things usually help me: working in a clean environment (organized, clean desk) and also playing classical music (like Glenn Gould).
Description : What are some tips in concentrating better when studying?
Last Answer : This also happened to me while i was studying. what I did was that I studied for about an hour or so and then took a 20 minutes break. I continued this pattern and it did help. Another useful tip would be studying in the late night-early morning hours, e.g. at around midnight. Hope this helps
Description : Why does my boyfriend cover his mouth with his tshirt sometimes? Usually it's when he's concentrating.
Last Answer : It smells April fresh? Its probably a nervous habit from childhood. Babies like to pull their blankets up to their faces and familiar smells help them feel comforted. It probably helps relax his mind.
Description : Outsourcing a part of or entire production and concentrating on marketing operations in international business is known as
Last Answer : Outsourcing a part of or entire production and concentrating on marketing operations in international ... C. contract manufacturing D. Joint venture.
Description : `CO_(2)` concentrating steps are found in
Last Answer : `CO_(2)` concentrating steps are found in A. `C_(3)` plant B. `C_(4)` plants C. CAM plants D. Temperate plants
Description : What is outsourcing of production and concentrating on marketing operations in international business, known as ? (A) Licensing (B) Franchising (C) Contract manufacturing (D) Joint venture
Last Answer : Answer: Franchising
Description : Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70%? (A) Cast iron (B) Steel (C) Nickel (D) Karbate
Last Answer : (C) Nickel
Description : Evaporator used for concentrating tomato juice is made of (A) Nickel (B) Brass (C) Stainless steel-glass lined (D) Cast iron-rubber lined
Last Answer : (C) Stainless steel-glass lined
Description : A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides (A) Higher economy (B) Lower capacity (C) Both (A) & (B) (D) Lower economy
Last Answer : (A) Higher economy
Description : . An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is (A) 4000 (B) 9000 (C) 4600 (D) 3000
Last Answer : (A) 4000
Description : A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is (A) 6000 (B) 24000 (C) 60000 (D) 48000
Last Answer : (B) 24000
Description : For concentrating an aqueous solution of a material like anhydrous Na2SO4, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator. (A) High pressure (B) Vacuum (C) Backward feed (D) None of these
Last Answer : (B) Vacuum
Description : Agitated film evaporator is suitable for concentrating __________ liquids. (A) Foaming (B) Viscous (C) Very thin (D) Corrosive
Last Answer : (B) Viscous
Description : Forced circulation evaporators are normally used for concentrating liquids having (A) Scaling characteristics (B) High viscosity (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : Visual-evoked response: a. is used primarily to detect visual loss due to retinal disease b. produces biphasic wavefronts c. may give falsely delayed latency if the patient is not concentrating d. produces responses in normal subjects with a latency of 100msec
Last Answer : produces responses in normal subjects with a latency of 100msec
Description : Porter's notion of a differentiation strategy is best described as one in which firms seek a competitive advantage . A. Through achieving a match between their internal and external ... competitors. C. Through concentrating on a narrow market segment. D. Through establishing their uniqueness
Last Answer : Through establishing their uniqueness
Description : What is meant by focused differentiation? A. Providing a high perceived value service or product to a selected market segment that justifies a substantial price premium B. ... differentiation D. Concentrating on differentiation as the primary means of achieving competitive advantage
Last Answer : Providing a high perceived value service or product to a selected market segment that justifies a substantial price premium
Description : Porter's notion of a differentiation strategy is best described as one in which firms seek a competitive advantage . A. Through achieving a match between their internal and external environments ... . C. Through concentrating on a narrow market segment. D. Through establishing their uniqueness.
Last Answer : Through establishing their uniqueness.
Description : A firm with limited resources can compete with much larger organization by : 1. concentrating its efforts on a single segment 2. using a multi-segment targeting strategy 3. ... segmentation variable 4. using multivaluable segmentation 5. concentrating its efforts on the total population
Last Answer : concentrating its efforts on a single segment
Description : Pick out the wrong statement. (A) In a first order reaction, A → products; the reaction becomes slower as it proceeds, because the concentration of A decreases and the rate is proportional to the concentration ... irreversible reaction, A + B → 2C is k.CA .CB , then the reaction is always elementary
Last Answer : (C) According to the penetration theory, the mass transfer co-efficient decreases, if the exposure time of an eddy to the solute decreases
Description : Dual wheels have disadvantage of a)reducing soil contact pressure and sub soil compact negative pressure b) concentrating load over an area c)reduces load on area by 50% d) none of the above
Last Answer : b) concentrating load over an area
Description : A firm with limited resources can compete with much larger organisations by: A)concentrating its efforts on a single segment B)using a multi-segment targeting strategy C)using ... segmentation variable D)using multivariable segmentation E)concentrating its efforts on the total population
Last Answer : A)concentrating its efforts on a single segment
Description : Bacteria develop tetracycline resistance by the following mechanisms except: A. Losing tetracycline concentrating mechanisms B. Elaborating tetracycline inactivating enzyme C. Synthesizing a protection protein' ... the target site D. Actively pumping out tetracycline that has entered the cell
Last Answer : B. Elaborating tetracycline inactivating enzym
Description : What is span of control? (a) empowering lower-level employees (b) concentrating decision-making on one specific point in the organization (c) centralization (d) number of subordinates a manager can effectively direct
Last Answer : (d) number of subordinates a manager can effectively direct
Description : Distinction between concentrating and non concentrating solar collector
Last Answer : Non concentrating or Flat plate collectors Concentrating type collectors Absorber area is large. Absorber area is small. Concentration ratio is 1. Concentration ratio is high. ... application such as power generation suitable where there are more clear days in a year.