Statement-I : All the ores are mineral Statement-II : Most of the ores contains metals in combined state

Statement-I : All the ores are mineral Statement-II : Most of the ores contains metals in combined state
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Statement-I : All the ores are mineral Statement-II : Most of the ores contains metals in combined state
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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

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

What are ores? Give example. What are ‘placer deposits’? Give example of mineral found in such deposits. -Geography

Description : What are ores? Give example. What are ‘placer deposits’? Give example of mineral found in such deposits. -Geography

Last Answer : The term Ores' is referred to the gathering of such minerals which are mixed with other elements. To make its extraction sodium salt, the mineral content should be in sufficient concentration of the ore ... and the base of hills. Minerals found in such deposits are Gold, Silver, Tin and Platinum.

The commodity which accounts for the maximum volume of goods transported by the railways in India is (a) iron and steel (b) coal (c) mineral oil (d) metallic ores (other than iron ore)

Description : The commodity which accounts for the maximum volume of goods transported by the railways in India is (a) iron and steel (b) coal (c) mineral oil (d) metallic ores (other than iron ore)

Last Answer : Ans: (b)

Sulfide ores are common for the metals.

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

Which of the following pairs is not correctly matched with respect to the extraction of metals from their ores ?

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 .

Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite `(CuSO

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.

Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite `(CuSO

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 ... self-reduction. Partial roasting of chalcopyrite produces

Minerals from which metals can be extracted economically and easily are called ores. The extraction of metals from theirs ores involves the following

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.

Minerals from which metals can be extracted economically and easily are called ores. The extraction of metals from theirs ores involves the following

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 extraction of metals from ... 2)S+2Cu_(2)O rarr 6Cu+SO_(2)`

Is it true that many metals are extracted from ores that contain sulfide minerals?

Description : Is it true that many metals are extracted from ores that contain sulfide minerals?

Last Answer : Feel Free to Answer

The process of extraction of metals from their ores; and then refining them for use is known as?

Description : The process of extraction of metals from their ores; and then refining them for use is known as?

Last Answer : metallurgy

The study of metals and the overall process by which metals are extracted from its ores are called?

Description : The study of metals and the overall process by which metals are extracted from its ores are called?

Last Answer : Metallurgy

How the most electropositive metals are isolated from their ores ?

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.

Which of the following ores contains maximum percentage of uranium? (A) Carnotite (B) Thorium (C) Rescolite (D) Pitchblende

Description : Which of the following ores contains maximum percentage of uranium? (A) Carnotite (B) Thorium (C) Rescolite (D) Pitchblende

Last Answer : (D) Pitchblende

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

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

In extraction of metal how many of the following ores calcination process is involved . (i) Dolomite (ii) Malachite (iii) Calcite (iv) Copper pyrities

Description : In extraction of metal how many of the following ores calcination process is involved . (i) Dolomite (ii) Malachite (iii) Calcite (iv) Copper pyrities

Last Answer : In extraction of metal how many of the following ores calcination process is involved . (i) Dolomite ... Siderite (viii) Iron pyrite (ix) Ar gentite

How many of the following are oxides ores (i) Carnalite (ii) Cuprite (iii) Cassiterite (iv) Chromite (v) Cinnabar (vi) Calamine (vii) Cerussite (Viii)

Description : How many of the following are oxides ores (i) Carnalite (ii) Cuprite (iii) Cassiterite (iv) Chromite (v) Cinnabar (vi) Calamine (vii) Cerussite (Viii)

Last Answer : How many of the following are oxides ores (i) Carnalite (ii) Cuprite (iii) Cassiterite (iv) ... (vii) Cerussite (Viii) Chalocopyrite (ix) Chalcocite

Match the ores of List-I with their composition in List-II

Description : Match the ores of List-I with their composition in List-II

Last Answer : Match the ores of List-I with their composition in List-II

Figure out the odd statement about ceramics in the following (a) Good insulators of heat and electricity (b) Usually less desire than metals (c) Ductile in nature (d) Contains both metallic and nonmetallic elements

Description : Figure out the odd statement about ceramics in the following (a) Good insulators of heat and electricity (b) Usually less desire than metals (c) Ductile in nature (d) Contains both metallic and nonmetallic elements  

Last Answer : (c) Ductile in nature

Statement -1 : Ores are generally converted into oxides , prior to reduction . Statement- 2 : Metal oxides can be easily reduced .

Description : Statement -1 : Ores are generally converted into oxides , prior to reduction . Statement- 2 : Metal oxides can be easily reduced .

Last Answer : Statement -1 : Ores are generally converted into oxides , prior to reduction . Statement- 2 : Metal oxides ... -1 : is false , statement-2 : is true

Pick out the wrong statement: (A) Magnetic separation method can be employed to treat both dry & wet ores (B) Reduction ratio in crushing operation is defined as the ratio of minimum feed size to the maximum product size (C) Gyratory crusher is used for coarse crushing (D) Screens are of stationary, moving and vibratory types

Description : Pick out the wrong statement: (A) Magnetic separation method can be employed to treat both dry & wet ores (B) Reduction ratio in crushing operation is defined as the ratio of minimum feed ... ) Gyratory crusher is used for coarse crushing (D) Screens are of stationary, moving and vibratory types

Last Answer : (B) Reduction ratio in crushing operation is defined as the ratio of minimum feed size to the maximum product size

(3) reflection of light due to the presence of free electrons Explanation: Lustre (or luster) is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the latin lux, meaning "light", and generally implies radiance, gloss, or brilliance. Metals in general have high electrical conductivity, high thermal conductivity, and high density. Typically they are malleable and ductile, deforming -under stress without cleaving.

Description : (3) reflection of light due to the presence of free electrons Explanation: Lustre (or luster) is the way light interacts with the surface of a crystal, rock, or mineral. The word ... conductivity, and high density. Typically they are malleable and ductile, deforming -under stress without cleaving.

Last Answer : Cloud is a colloidal dispersion of – (1) Air in a dispersion medium of water (2) Fog in a dispersion medium of water (3) Mist in a dispersion medium of air (4) Water drops in a dispersion medium of air

State the necessity of providing (i) Combined column footing and (ii) Raft foundation

Description : State the necessity of providing (i) Combined column footing and (ii) Raft foundation

Last Answer : (i) Combined column footing:- A combined footing provided as a column for two or more columns in a row. Combine footing is also provided when the columns are very near to each other and ... total individual footing area of all columns exceeds 50% of built up area of building at ground floor.

Which state is the largest producer of manganese ores in India? -SST 10th

Description : Which state is the largest producer of manganese ores in India? -SST 10th

Last Answer : Odisha is the largest producer of manganese ores in India. It accounted for one-third of the country’s total production in 2000-01

In which State is Khetri the area known for copper ores, situated? (1) Himachal Pradesh (2) Assam (3) Rajasthan (4) Karnataka

Description : In which State is Khetri the area known for copper ores, situated? (1) Himachal Pradesh (2) Assam (3) Rajasthan (4) Karnataka

Last Answer : (3) Rajasthan Explanation: Khetri Nagar is a town in Jhunjhunu district of Rajasthan in India. It is known for its Copper Project. The township of Khetri Nagar is built and is under control of the Hindustan Copper Limited, a public sector unit under Government of India.

The mineral monazite is a rich source of thorium, available in large quantity in kerala. A typical monazite sample contains 9% `ThO_(2)` and 0.35% `U_

Description : The mineral monazite is a rich source of thorium, available in large quantity in kerala. A typical monazite sample contains 9% `ThO_(2)` and 0.35% `U_

Last Answer : The mineral monazite is a rich source of thorium, available in large quantity in kerala. A typical monazite sample ... B. 0.266 C. 0.366 D. 0.466

Black soil contains the clay mineral

Description : Black soil contains the clay mineral

Last Answer : Ans. Montmorillonite clay (2:1)

Which one of the following Mineral does not contains oxygen?

Description : Which one of the following Mineral does not contains oxygen?

Last Answer : Cryolite

. A mineral is termed as 'ore', if (A) A metal can be economically extracted from it (B) It contains ≥ 40% metal (C) The metal present in it is costly (D) All (A), (B) and (C)

Description : . A mineral is termed as 'ore', if (A) A metal can be economically extracted from it (B) It contains ≥ 40% metal (C) The metal present in it is costly (D) All (A), (B) and (C)

Last Answer : (A) A metal can be economically extracted from it

Which one of the following Mineral does not contains oxygen?

Description : Which one of the following Mineral does not contains oxygen?

Last Answer : Cryolite

A rock contains only one mineral. It is called (A) Homogeneous (B) Non-homogeneous (C) Monomineralic (D) Polymineralic

Description : A rock contains only one mineral. It is called (A) Homogeneous (B) Non-homogeneous (C) Monomineralic (D) Polymineralic

Last Answer : Answer: Option C

Asbestos (A) Is a natural fibrous mineral substance (B) Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) (C) Contains iron oxide and alumina (D) All the above

Description : Asbestos (A) Is a natural fibrous mineral substance (B) Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) (C) Contains iron oxide and alumina (D) All the above

Last Answer : Answer: Option D

Bauxite is a mineral that primarily contains which metal?

Description : Bauxite is a mineral that primarily contains which metal? 

Last Answer : ANSWER: ALUMINUM

Three resistors of `1 Omega, 2 Omega " and " 3 Omega` are combined in series. (i) What is the total resistance of the combination ? (ii) If the combin

Description : Three resistors of `1 Omega, 2 Omega " and " 3 Omega` are combined in series. (i) What is the total resistance of the combination ? (ii) If the combin

Last Answer : Three resistors of `1 Omega, 2 Omega " and " 3 Omega` are combined in series. ( ... resistance, obtain the potential dropo across each resistor.

Which of the following is/are correct about shifting cultivation ? 1. It involves no ploughing 2. It is slash and burn agriculture 3. It involves crop rotation 4. It is combined with transhumance (a) I, II, III and IV (b) II, III and IV (c) II and III (d) I and II

Description : Which of the following is/are correct about shifting cultivation ? 1. It involves no ploughing 2. It is slash and burn agriculture 3. It involves crop rotation 4. It is combined with transhumance (a) I, II, III and IV (b) II, III and IV (c) II and III (d) I and II

Last Answer : Ans: (d)

Match List I with List II and select the : [IES-2002] List I (Bearings) List II (Load type) A. Hydrodynamic Journal bearing 1. High radial and thrust load combined B. Rectangular Hydrostatic bearing 2. Radial load only C. Taper Roller bearing 3. Thrust load only D. Angular contact ball bearing 4. Medium to low radial and thrust combined A B C D A B C D (a) 2 3 1 4 (b) 4 1 3 2 (c) 2 1 3 4 (d) 4 3 1 2

Description : Match List I with List II and select the : [IES-2002] List I (Bearings) List II (Load type) A. Hydrodynamic Journal bearing 1. High radial and thrust load combined B. Rectangular Hydrostatic bearing 2. Radial load only C. Taper Roller ... (a) 2 3 1 4 (b) 4 1 3 2 (c) 2 1 3 4 (d) 4 3 1 2

Last Answer : (a) 2 3 1 4

DES and public key algorithm are combined (i) to speed up encrypted message transmission (ii)to ensure higher security by using different key for each transmission (iii) as a combination is always better than individual system (iv) as it is required in e-Commerce a. i and ii b. ii and iii c. iii and iv d. i and iv

Description : DES and public key algorithm are combined (i) to speed up encrypted message transmission (ii)to ensure higher security by using different key for each transmission (iii) as a combination is always better than individual system (iv ... e-Commerce a. i and ii b. ii and iii c. iii and iv d. i and iv  

Last Answer : a. i and ii

German Silver contains following Metals –

Description : German Silver contains following Metals –

Last Answer : Copper, Zinc, Nickel

What are ores? Give example. -SST 10th

Description : What are ores? Give example. -SST 10th

Last Answer : (i) The term ore is used to describe an accumulation of any mineral mixed with other elements. Minerals are usually found in ores. Metals are extracted from the ores after removing the impurities ... . Gold, silver, tin and platinum are examples of some important minerals found in placer deposits'

Which oil is used in the floatation method for the purification of ores? -General Knowledge

Description : Which oil is used in the floatation method for the purification of ores? -General Knowledge

Last Answer : The answer is 'Pine oil'

Which ores are usually heavier ?

Description : Which ores are usually heavier ?

Last Answer : Oxide ores are usually heavier.

What does Ores mean ?

Last Answer : Ores means ore

how many of the following are ores of copper chalopyrite Cuprite , chalcoite ,malachite Azurite ,Bornite ,Limonite ,Zicite ,Braunite .

Description : how many of the following are ores of copper chalopyrite Cuprite , chalcoite ,malachite Azurite ,Bornite ,Limonite ,Zicite ,Braunite .

Last Answer : how many of the following are ores of copper chalopyrite Cuprite , chalcoite ,malachite Azurite ,Bornite ,Limonite ,Zicite ,Braunite .

Howw many of the following are ores of zinc : Ainc red Calamine , Willemite ,Hemimorphite,Siderite ,phyrolusite ,olivine ,Anglesite

Description : Howw many of the following are ores of zinc : Ainc red Calamine , Willemite ,Hemimorphite,Siderite ,phyrolusite ,olivine ,Anglesite

Last Answer : Howw many of the following are ores of zinc : Ainc red Calamine , Willemite ,Hemimorphite,Siderite ,phyrolusite ,olivine ,Anglesite

Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydrated or hydroxides) two ores [X] and [Y] show the following reactivity. (i)

Description : Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydrated or hydroxides) two ores [X] and [Y] show the following reactivity. (i)

Last Answer : Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydrated or hydroxides) ... and hydroxide ores D. Carbonate and oxide ores

Assertion: `Ag` and `Au` are extracted by leaching the ores with a dilute solution of `NaCN`. Reason: Impurities associated with these ores dissolve i

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

Assertion : Froth flatation process is used to concentrate sulphide ores. Reason : There is a difference in the nature of wettibility of different ore

Description : Assertion : Froth flatation process is used to concentrate sulphide ores. Reason : There is a difference in the nature of wettibility of different ore

Last Answer : Assertion : Froth flatation process is used to concentrate sulphide ores. Reason : There is a difference ... -1 is false but Statement -2 is true

Which of the following faction is of no significance for roasting sulphide ores to the oxide and not subjecting the sulphide ores in carbon reduction

Description : Which of the following faction is of no significance for roasting sulphide ores to the oxide and not subjecting the sulphide ores in carbon reduction

Last Answer : Which of the following faction is of no significance for roasting sulphide ores to the oxide and ... are thermodynamically more stable than `CS_(2)`

Which one of the following ores is best concentrated by froth flotation method:

Description : Which one of the following ores is best concentrated by froth flotation method:

Last Answer : Which one of the following ores is best concentrated by froth flotation method: A. magnetite B. cassiterite C. galena D. malachite.

`Pb` and `Sn` are exerted from their chief ores by:

Description : `Pb` and `Sn` are exerted from their chief ores by:

Last Answer : `Pb` and `Sn` are exerted from their chief ores by: A. Carbon reduction and self ... and self reduction D. Self reduction and electrolysis