Define: (i) Ore (ii) Flux

Define: (i) Ore (ii) Flux 
by

1 Answer

Answer :

Ore: The mineral from which the metal is conveniently and economically extracted is known as ore. 

Flux: ‘A substance which is used to remove the gangue from ore is called flux’.
by

Related questions

Define the following terms: i) Magnetic flux density, ii) Reluctance, iii) Magneto-motive force, iv) Permeance.

Description : Define the following terms: i) Magnetic flux density, ii) Reluctance, iii) Magneto-motive force, iv) Permeance.

Last Answer : (i) Magnetic flux density (B): It is the magnetic flux per unit area measured at right angles to the flux path. (Its unit is weber/m2 or tesla).  (ii) Reluctance: It is the ... flux to set up through it and it is reciprocal of reluctance. Permeance = 1/ Reluctance. Unit: weber/ampere.

Define : i) MMF ii) Reluctance iii) Fringing iv) Leakage flux

Description : Define : i) MMF ii) Reluctance iii) Fringing iv) Leakage flux

Last Answer : i) MMF:  It is the force that drives magnetic flux through magnetic circuit. It is measured in amp-turns.  ii) Reluctance (s) :-  Reluctance is the property of the substance ... through the magnetic circuit, leaks through the air surrounding the core. This flux is called as leakage flux.

Define the terms: (i) Mineral (ii) ore

Description : Define the terms: (i) Mineral (ii) ore 

Last Answer : i) Mineral: A naturally occurring substance present in earth's crust which contains metal in the free or combined state is known as mineral.   ii) Ore: The mineral from which the metal is conveniently and economically extracted is known as ore. 

The compound of a metal found in nature is called - (1) Mineral (2) Ore (3) Flux (4) Slag

Description : The compound of a metal found in nature is called - (1) Mineral (2) Ore (3) Flux (4) Slag

Last Answer : (1) Mineral Explanation: Metals are an integral part of our planet and are found in almost all rocks and soils. Most metals form compounds called minerals, which are naturally occurring, inorganic solids with regular chemical compositions and crystal structures.

__________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace. (A) Bauxite (B) Limestone (C) Quartz (D) Manganese

Description : __________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace. (A) Bauxite (B) Limestone (C) Quartz (D) Manganese

Last Answer : (B) Limestone

__________ is used as a flux in the smelting of copper ore like chalcopyrite. (A) Coke breeze (B) Lime powder (C) Silica/quartz (D) Dolomite

Description : __________ is used as a flux in the smelting of copper ore like chalcopyrite. (A) Coke breeze (B) Lime powder (C) Silica/quartz (D) Dolomite

Last Answer : (C) Silica/quartz

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

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

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

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

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

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

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

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

Define: (i) Electromagnetism (ii) Magnetic flux.

Description : Define: (i) Electromagnetism (ii) Magnetic flux.

Last Answer : i)Electromagnetism : It is the magnetism generated by electricity. OR  It is defined as the phenomenon associated with electric and magnetic fields and their interactions with each other. ii) Magnetic flux : The total number of magnetic lines of force in a magnetic field is called magnetic flux.

Define the terms: (i) Lamp efficiency (ii) Luminous flux (iii) Luminaire (iv) Colour Rendering Index.

Description : Define the terms: (i) Lamp efficiency (ii) Luminous flux (iii) Luminaire (iv) Colour Rendering Index. 

Last Answer : i) Lamp efficiency or luminous efficiency: It is the ratio of luminous flux emitted by a lamp to the power consumed by the lamp. It is a reflection of efficiency of energy conservation ... of surfaces illuminated by a given source compare to those of the same surface under reference illuminant.

Define the following terms and state their units: (i) Luminous intensity, (ii) Luminous flux

Description : Define the following terms and state their units: (i) Luminous intensity, (ii) Luminous flux

Last Answer : i) Luminous intensity: This is defined as the luminous flux emitted into a solid angle of space in a specific direction. Its unit is the candela.  OR  The luminous flux per unit solid angle ( ... energy radiated by the light source in all direction. The unit of luminous flux is lumen (lm) 

Define magnetic flux density and state its formula.

Description : Define magnetic flux density and state its formula.

Last Answer : The magnetic flux per unit area is called as magnetic flux density. Magnetic flux density is denoted by B. The formula for magnetic flux density is Weber per metre square or Tesla. Mathematically ... the unit of magnetic flux density is Weber per metre square which is also called as Tesla.

Define the terms 1) Flux 2) Slag.

Description : Define the terms 1) Flux 2) Slag.

Last Answer : Flux: ‘A substance which is used to remove the gangue from ore is called flux’.  Slag: A fusible chemical compound formed by combination of the added flux and the gangue present in the ore.

Define each of following terms of illumination — lux, lumen, luminous flux, illumination.

Description : Define each of following terms of illumination — lux, lumen, luminous flux, illumination.

Last Answer : i) Lux :- It is unit of illumination and it is defined as luminous flux falling per unit area  ii) Lumen: It is defined as the luminous flux emitted by a source of one candle power per unit ... the given surface on the working plane. The unit of illumination is lumens/m2 OR lumens/m2 = 1 Lux

A 60W lamp is rated at 0.8 watt/candela. Calculate (i) luminous intensity of the lamp, (ii) luminous flux of the lamp, and (iii) illuminance at a dist

Description : A 60W lamp is rated at 0.8 watt/candela. Calculate (i) luminous intensity of the lamp, (ii) luminous flux of the lamp, and (iii) illuminance at a dist

Last Answer : A 60W lamp is rated at 0.8 watt/candela. Calculate (i) luminous intensity of the lamp, (ii) ... iii) illuminance at a distance of 2m from the lamp.

Which of the following statements are true? i) reactive current is necessary to build up the flux for the magnetic field of inductive devices ii) some portion of reactive current is converted into work iii) the cosine of angle between kVA and kVAr vector is called power factor iv) the cosine of angle between kW and kVA vector is called power factor a) i & iv b) ii & iii c) i & iii d) iii & iv

Description : Which of the following statements are true? i) reactive current is necessary to build up the flux for the magnetic field of inductive devices ii) some portion of reactive current is converted into work iii) the cosine of angle ... called power factor a) i & iv b) ii & iii c) i & iii d) iii & iv

Last Answer : a) i & iv

Define the term ‘Ore’. -SST 10th

Description : Define the term ‘Ore’. -SST 10th

Last Answer : The term ‘Ore’ is used to describe an accumulation of any mineral mixed with other elements.

Define concentration of ore. Name different methods of concentration.

Description : Define concentration of ore. Name different methods of concentration.

Last Answer : Concentration of ore: The concentration of ore means the removal of gangue or matrix from crushed ore. Methods: i) Gravity separation ii) Electromagnetic separation iii) Froth floatation iv) Calcination v) Roasting

(i) What is the significance of the coal deposits of Chhattisgarh ? (ii) Which country import the iron ore deposits of Chhattisgarh ? -Geography

Description : (i) What is the significance of the coal deposits of Chhattisgarh ? (ii) Which country import the iron ore deposits of Chhattisgarh ? -Geography

Last Answer : (i) They are used in the iron and steel industries of Eastern India and also a major item of export. (ii) China.

State the most important use of the following : (i) Iron ore (ii) Bauxite -Geography

Description : State the most important use of the following : (i) Iron ore (ii) Bauxite -Geography

Last Answer : Most important use of: (i) Iron ore : In the production of steel. (ii) Bauxite: In the production of aluminium.

With reference to the Bokaro Steel Plant, from where does it get its (i) coal (ii) iron ore (iii) water supply ? -Geography

Description : With reference to the Bokaro Steel Plant, from where does it get its (i) coal (ii) iron ore (iii) water supply ? -Geography

Last Answer : (i) Coal from Bokaro and Jharia coal fields. (ii) Iron ore from Bonaigarh, Kiriburu and Noamundi in Orissa. (iii) Water supply from River Damodar.

(i) Mention two characteristics of a mini steel plant. (ii) From where does the integrated steel plant at Jamshedpur get its iron ore and coal ? -Geography

Description : (i) Mention two characteristics of a mini steel plant. (ii) From where does the integrated steel plant at Jamshedpur get its iron ore and coal ? -Geography

Last Answer : (i) Two characteristics of a mini steel plant are : 1. They use cheaply available scrap iron. 2. They use electric furnaces therefore cause no pollution. (ii) Jamshedpur plant get its iron ore from Singhbhum and Mayurbhanj. It get its coal from Jharia and Raniganj.

Statement-I : `CuFeS_(2)` is concentrated by froath floatation method Statement-II : `CuFeS_(2)` is main ore of copper.

Description : Statement-I : `CuFeS_(2)` is concentrated by froath floatation method Statement-II : `CuFeS_(2)` is main ore of copper.

Last Answer : Statement-I : `CuFeS_(2)` is concentrated by froath floatation method Statement-II : `CuFeS_(2)` is main ore of copper.

Which of the following statements are true with respect to iron ore? 2. Limestone and coal are important for smelting iron ore 3. More than 20% of the world iron ore deposits are in India 4. Odisha and Jharkhand top in the production of iron ore 5. Iran is the largest buyer of Indian iron ore (a) I, II and III (b) II and III (c) III and IV (d) II, III and IV

Description : Which of the following statements are true with respect to iron ore? 2. Limestone and coal are important for smelting iron ore 3. More than 20% of the world iron ore deposits are in India 4. Odisha and Jharkhand top in the ... a) I, II and III (b) II and III (c) III and IV (d) II, III and IV

Last Answer : Ans: (a)

The Rourkela steel plant obtains: 1. hydel power from the Hirakud dam 2. coking coal from Jharia coalfields 3. iron ore from Baba Budan hills (a) I, II and III (b) I and II (c) I and III (d) II and III

Description : The Rourkela steel plant obtains: 1. hydel power from the Hirakud dam 2. coking coal from Jharia coalfields 3. iron ore from Baba Budan hills (a) I, II and III (b) I and II (c) I and III (d) II and III

Last Answer : Ans: (d)

Tick out the incorrect match: List I (Ore) List II (Mineral) a) Dolomite- MgCO3 b) Gibbsite3- H2O c) Gypsum2- H2O d) Geothite- Fe2O3

Description : Tick out the incorrect match: List I (Ore) List II (Mineral) a) Dolomite- MgCO3 b) Gibbsite3- H2O c) Gypsum2- H2O d) Geothite- Fe2O3

Last Answer : d) Geothite- Fe2O3

Flux density formula

Description : Flux density formula

Last Answer : Flux density formula

Describe the concept of leakage flux, useful flux and fringing with neat diagram.

Description : Describe the concept of leakage flux, useful flux and fringing with neat diagram.

Last Answer : Leakage Flux

A coil of 500 turns is linked with a flux of 25 mwb, when carries a current of 12.5A. Calculate the value of self-inductance.

Description : A coil of 500 turns is linked with a flux of 25 mwb, when carries a current of 12.5A. Calculate the value of self-inductance.

Last Answer : Ans: Self-Inductance: L = NΦ /I = 500 × 25 × 10-3 / 12.5 = 1 H

In a flux meter, the controlling torque is _____.

Description : In a flux meter, the controlling torque is _____.

Last Answer : In a flux meter, the controlling torque is not provided at all.

Which of the following is a unit of magnetic flux?

Description : Which of the following is a unit of magnetic flux? A) Weber B) Maxwell C) Both A and B D) None of these

Last Answer : Which of the following is a unit of magnetic flux? A) Weber B) Maxwell C) Both A and B D) None of these

"Electric flux enclosed by a surface surrounding a charge is equal to the amount of charge enclosed." This...

Description : "Electric flux enclosed by a surface surrounding a charge is equal to the amount of charge enclosed." This is the statement of

Last Answer : "Electric flux enclosed by a surface surrounding a charge is equal to the amount of charge enclosed." This is the statement of Gauss's law

Gauss's theorem states that total electric flux Φ emanating from a closed surface is equal to

Description : Gauss's theorem states that total electric flux Φ emanating from a closed surface is equal to (a) Total current density on the surface (b) Total charge enclosed by that surface (c) Total current on the surface (d) Total charge density within the surface

Last Answer : Gauss's theorem states that total electric flux Φ emanating from a closed surface is equal to Total charge enclosed by that surface

The core of a transformer (medium size) uses to provide high flux densities

Description : The core of a transformer (medium size) uses to provide high flux densities (a) diamagnetic (c) ferromagnetic core (b) paramagnetic (d) none of these

Last Answer : The core of transformer is made up colled rolled grain oriented. It is a ferromagnetic material..

The path of the magnetic flux in a transformer has :

Description : The path of the magnetic flux in a transformer has : (A) High reluctance (B) Low resistance (C) High conductivity (D) Low reluctance

Last Answer : low reluctance path

What is the purpose of using flux at the time of soldering?

Description : What is the purpose of using flux at the time of soldering? A. To remove oxidation B. To prevent corrosion C. To promote wet surface D. All of these

Last Answer : What is the purpose of using flux at the time of soldering? A. To remove oxidation B. To prevent corrosion C. To promote wet surface D. All of these

Unit of flux density in magnetic circuits is ______________.

Description : Unit of flux density in magnetic circuits is ______________. A. Tesla B. dB C. Weber D. Hz 

Last Answer : Unit of flux density in magnetic circuits is Weber.

If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density:

Description : If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density: A. increases B. decreases C. remains the same D. doubles

Last Answer : If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density: decreases

Which of the following statements holds for the divergence of electric and magnetic flux densities?

Description : Which of the following statements holds for the divergence of electric and magnetic flux densities?  A) Both are zero B) These are zero for static densities but non zero for time varying densities C) It is zero for electric flux density D) It is zero for magnetic flux density

Last Answer : Which of the following statement holds for the divergence of electric and magnetic flux densities ?  (A) Both are zero (B) These are zero for static densities but non zero for time varying densities. (C) It is zero for the electric flux density (D) It is zero for the magnetic flux density

When a conductor cuts magnetic flux, an emf is induced in the conductor. This is known as...

Description : When a conductor cuts magnetic flux, an emf is induced in the conductor. This is known as  (a) Joule's law (b) Faraday's law (c) Coulomb's law (d) Ampere’s law

Last Answer : When a conductor cuts magnetic flux, an emf is induced in the conductor. This is known as Faraday's law. There are two Faraday's law of electromagnetic induction. 1. Changing flux produces emf ... 2. Magnitude of induced e.m.f. is directly proportional to rate of change of flux linkage.

The material used for the magnetic circuit where high value of flux density required is

Last Answer : The material used for the magnetic circuit where high value of flux density required is ferro cobalt.

The property of a material which opposes the creation of magnetic flux in it is known as?

Description : The property of a material which opposes the creation of magnetic flux in it is known as?

Last Answer : The property of a material which opposes the creation of magnetic flux in it is known as reluctance.

The unit of magnetic flux is?

Description : The unit of magnetic flux is?

Last Answer : The unit of magnetic flux is weber.

what is the unit of flux density?

Last Answer : Flux density is denoted by B. And it is given as B = flux/ area Where, the unit of flux is Weber and unit of area is meter square. So the unit of flux density is weber per meter square which is also called as Tesla.

Describe the method used for concentration of sulphide ore.

Description : Describe the method used for concentration of sulphide ore. 

Last Answer : Process : In this process, the powdered sulphide ore is mixed with water & pine oil. The whole mixture is then stirred vigorously by passing compressed air. The oil forms a froth with air ... ; sink to the bottom of the tank. The floating froth is then skimmed off into settling basins.