Among the following iron ores, the highest percentage of iron content is found in— (1) Haemetite (2) Magnetite (3) Limnonite (4) None of these

Among the following iron ores, the highest percentage of iron content is found in— (1) Haemetite (2) Magnetite (3) Limnonite (4) None of these
by

1 Answer

Answer :

Haemetite
by

Related questions

Which of the following ores does not contain iron? (1) Haematite (2) Magnetite (3) Limonite (4) Cassiterite

Description : Which of the following ores does not contain iron? (1) Haematite (2) Magnetite (3) Limonite (4) Cassiterite

Last Answer : (4) Cassiterite

Which of the following is an iron ore? (1) Bauxite (2) Magnetite (3) Lignite (4) Nitrite

Description : Which of the following is an iron ore? (1) Bauxite (2) Magnetite (3) Lignite (4) Nitrite

Last Answer : (2) Magnetite Explanation: Magnetite is a 'mineral, one of the two common naturally occurring oxides of Iron. It is the most magnetic of all the naturally occurring minerals on Earth.

The iron ore which contains 72% of iron is – (1) Magnetite (2) Limonite (3) Haematite (4) Siderite

Description : The iron ore which contains 72% of iron is – (1) Magnetite (2) Limonite (3) Haematite (4) Siderite

Last Answer : (1) Magnetite Explanation: Iron (Fe) is a metallic element and composes about 5% of the Earth's crust. When pure it is a dark, silvery-gray metal. It is a very reactive element ... alloy. Iron-nickel meteorites are believed to represent the earliest material formed at the beginning of the universe.

Which one of the following is a mineral of iron? (1) Magnetite (2) Malachite (3) Cassiterite (4) Pyrolusite

Description : Which one of the following is a mineral of iron? (1) Magnetite (2) Malachite (3) Cassiterite (4) Pyrolusite

Last Answer : Magnetite

Which of the following is an iron ore ? (1) Bauxite (2) Magnetite (3) Lignite (4) Nitrite

Description : Which of the following is an iron ore ? (1) Bauxite (2) Magnetite (3) Lignite (4) Nitrite

Last Answer : Magnetite

The iron ore which contains 72% of iron is : (1) Magnetite (2) Limonite (3) Haematite (4) Siderite

Description : The iron ore which contains 72% of iron is : (1) Magnetite (2) Limonite (3) Haematite (4) Siderite

Last Answer : Magnetite

Mention the context of iron present in magnetite. -SST 10th

Description : Mention the context of iron present in magnetite. -SST 10th

Last Answer : A very high context of iron, upto 70 percent, is present in magnetite.

The iron ore magnetite consists of?

Description : The iron ore magnetite consists of?

Last Answer : Fe203

Pig iron is produced by blast furnaces in India using mostly the iron ore named (A) Hematite (B) Magnetite (C) Siderite (D) Chalcopyrite

Description : Pig iron is produced by blast furnaces in India using mostly the iron ore named (A) Hematite (B) Magnetite (C) Siderite (D) Chalcopyrite

Last Answer : (A) Hematite

Minimum of 40% of iron, is available in (A) Magnetite (B) Red haematite (C) Limonite (D) Black band

Description : Minimum of 40% of iron, is available in (A) Magnetite (B) Red haematite (C) Limonite (D) Black band

Last Answer : Answer: Option D

Upto a maximum of 72% of iron, is available in (A) Magnetite (B) Limonite (C) Siderite (D) Iron pyrites

Description : Upto a maximum of 72% of iron, is available in (A) Magnetite (B) Limonite (C) Siderite (D) Iron pyrites

Last Answer : Answer: Option A

The chemical union of iron, oxygen and water forms w) magnetite x) hematite y) limonite z) pyrite

Description : The chemical union of iron, oxygen and water forms w) magnetite x) hematite y) limonite z) pyrite

Last Answer : ANSWER: Y -- LIMONITE

At a site, low grade copper ores are available and zinc and iron seraps are also available. Which of the two seraps will be more suitable for reducing the leached copper ore and why ?

Description : At a site, low grade copper ores are available and zinc and iron seraps are also available. Which of the two seraps will be more suitable for reducing the leached copper ore and why ?

Last Answer : Ans. : The E0 value for the redox couple Zn2+/ Zn(-0.76V) is more negative than that of Fe2+/ Fe(- 0.44) redox couple. Therefore, Zinc is more reactive than iron and hence reduction will ... Zinc seraps are used, But Zinc is a costier metal than iron so using iron scraps would be more economical.

Which of the following is the primary reason for adding calcium carbonate to the reduction process of iron oxide ores ? The calcium carbonate: w) acts as an oxidizing agent x) removes silicate waste products y) acts as a reducing agent z) removes sulfur waste products

Description : Which of the following is the primary reason for adding calcium carbonate to the reduction process of iron oxide ores ? The calcium carbonate: w) acts as an oxidizing agent x) removes silicate waste products y) acts as a reducing agent z) removes sulfur waste products

Last Answer : ANSWER: X -- REMOVES SILICATE WASTE PRODUCTS

Name two important ores of iron? Mention its formula.

Description : Name two important ores of iron? Mention its formula.

Last Answer : Name two important ores of iron? Mention its formula.

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

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

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

What is the signal of magnetite ?

Description : What is the signal of magnetite ?

Last Answer : The chemical signal of magnetite is Fe₃O₄

Which mineral is the ore of aluminium? (1) Haematite (2) Bauxite (3) Magnetite (4) Siderite

Description : Which mineral is the ore of aluminium? (1) Haematite (2) Bauxite (3) Magnetite (4) Siderite

Last Answer : (2) Bauxite Explanation: Bauxite is an aluminium ore and is the main source of aluminium. Approximately 70% to 80% of the world's dry bauxite production is processed first into alumina, and then into aluminium by electrolysis.

The most important ore of lead is – (1) Galena (2) Magnetite (3) Pyrolusite (4) Siderite

Description : The most important ore of lead is – (1) Galena (2) Magnetite (3) Pyrolusite (4) Siderite

Last Answer : (1) Galena Explanation: Galena is the natural mineral form of lead sulfide. It is the most important lead ore mineral. Galena is one of the most abundant and widely distributed sulfide minerals.

How many oxygen atoms are there in one formula unit of magnetite?

Description : How many oxygen atoms are there in one formula unit of magnetite?

Last Answer : ANSWER: FOUR

The most important ore of lead is (1) Galena (2) Magnetite (3) Pyrolusite (4) Siderite

Description : The most important ore of lead is (1) Galena (2) Magnetite (3) Pyrolusite (4) Siderite

Last Answer : Galena

Which mineral is the ore of aluminium ? (1) Haematite (2) Bauxite (3) Magnetite (4) Siderite

Description : Which mineral is the ore of aluminium ? (1) Haematite (2) Bauxite (3) Magnetite (4) Siderite

Last Answer : Bauxite

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)

Froth floatation is the most suitable for treating (A) Iron ores (B) Sulphide ores (C) Quartzite (D) None of these

Description : Froth floatation is the most suitable for treating (A) Iron ores (B) Sulphide ores (C) Quartzite (D) None of these

Last Answer : (B) Sulphide ores

Stamp mills are generally used for crushing (A) Iron ores (B) Gold ores (C) Talc (D) Diamond

Description : Stamp mills are generally used for crushing (A) Iron ores (B) Gold ores (C) Talc (D) Diamond

Last Answer : (B) Gold ores

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

The operation of removal of impurities or clay adhering to iron ores, is known as (A) Dressing (B) Calcination (C) Roasting (D) Smelti

Description : The operation of removal of impurities or clay adhering to iron ores, is known as (A) Dressing (B) Calcination (C) Roasting (D) Smelti

Last Answer : Answer: Option A

Pig iron is manufactured from the ores by (A) Dressing (B) Calcination and roasting (C) Smelting (D) All the above

Description : Pig iron is manufactured from the ores by (A) Dressing (B) Calcination and roasting (C) Smelting (D) All the above

Last Answer : Answer: Option D

Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig

Description : Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig

Last Answer : Answer: Option A

Calcination of iron ores is done (A) To remove moisture (B) To remove carbonic acid (C) By roasting in heaps (D) All the above

Description : Calcination of iron ores is done (A) To remove moisture (B) To remove carbonic acid (C) By roasting in heaps (D) All the above

Last Answer : Answer: Option D

Write two ores of iron with chemical formula.

Description : Write two ores of iron with chemical formula.

Last Answer : 1) Magnetite - Fe₃O₄  2) Haematite - Fe₂O₃ 3) Limonite - 2 Fe₂O₃.3H₂O 4) Iron Pyrites - FeS₂ 5) Siderite - FeCO₃ 

What is the element that is in the highest percentage in the composition of the earth? (1) Silicon (2) Oxygen (3) Magnesium (4) Iron

Description : What is the element that is in the highest percentage in the composition of the earth? (1) Silicon (2) Oxygen (3) Magnesium (4) Iron

Last Answer : (2) Oxygen Explanation: Earth, our home, is the third planet from the sun. It is the only planet known to have an atmosphere containing free oxygen, oceans of liquid water on its surface, and, of ... of it in the oceans. About a fifth of its atmosphere is made up of oxygen, produced by plants.

What is the element that is in the highest percentage in the composition of the earth ? (1) Silicon (2) Oxygen (3) Magnesium (4) Iron

Description : What is the element that is in the highest percentage in the composition of the earth ? (1) Silicon (2) Oxygen (3) Magnesium (4) Iron

Last Answer : Oxygen

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.

Which among the following elements is found in maximum percentage in the human body ? (1) Carbon (2) Hydrogen (3) Nitrozen (4) Oxyzen

Description : Which among the following elements is found in maximum percentage in the human body ? (1) Carbon (2) Hydrogen (3) Nitrozen (4) Oxyzen

Last Answer : Oxyzen

Highest percentage of carbon is found in which form of coal? (1) Anthracite (2) Bituminous (3) Peat (4) Lignite

Description : Highest percentage of carbon is found in which form of coal? (1) Anthracite (2) Bituminous (3) Peat (4) Lignite

Last Answer : (1) Anthracite Explanation: Anthracite is the highest rank of coal since it has a carbon content of over 87% on a dry ash-free basis. Anthracite coal generally has the highest heating value per ton on a mineral-matter-free basis. It has a bright luster and breaks with a semi-conchoidal. fracture.

Highest percentage of carbon is found in which form of coal? (1) Anthracite (2) Bituminous (3) Peat (4) Lignite

Description : Highest percentage of carbon is found in which form of coal? (1) Anthracite (2) Bituminous (3) Peat (4) Lignite

Last Answer : Anthracite

Is magnetite expensive?

Description : Is magnetite expensive?

Last Answer : Feel Free to Answer

Is magnetite a silicate or nonsilicate?

Description : Is magnetite a silicate or nonsilicate?

Last Answer : Need answer

The most important ore of aluminium is (a) Bauxite (b) Magnetite (c) Haematite (d) Monazite

Description : The most important ore of aluminium is (a) Bauxite (b) Magnetite (c) Haematite (d) Monazite

Last Answer : Ans:(a)

The rock that results from solidification of molten lava from a volcano is an example of Which of the following? (1) Igneous rocks (2) Granite Rock (3) Basalt Rock (4) Magnetite

Description : The rock that results from solidification of molten lava from a volcano is an example of Which of the following? (1) Igneous rocks (2) Granite Rock (3) Basalt Rock (4) Magnetite

Last Answer : (1) Igneous rocks Explanation: Igneous rocks are formed through the cooling and solidification of magma (or lava).

The rock that results from solidification of molten lava from a volcano is an example of which of the following? (1) Igneous Rock (2) Granite Rock (3) Basalt Rock (4) Magnetite

Description : The rock that results from solidification of molten lava from a volcano is an example of which of the following? (1) Igneous Rock (2) Granite Rock (3) Basalt Rock (4) Magnetite

Last Answer : (1) Igneous Rock Explanation: Igneous rocks are formed through the cooling and solidification of magma (or lava). As hot, molten rock rises to the surface, it undergoes changes in temperature and ... Earth's crust. However, some are also formed on the surface as a result of volcanic activity.

To obtain a very high strength concrete, use very fine grained (A) Granite (B) Magnetite (C) Barite (D) Volcanic

Description : To obtain a very high strength concrete, use very fine grained (A) Granite (B) Magnetite (C) Barite (D) Volcanic

Last Answer : Answer: Option A

The principal mineral in most sand beaches is w) quartz x) orthoclase y) magnetite z) muscovite

Description : The principal mineral in most sand beaches is w) quartz x) orthoclase y) magnetite z) muscovite

Last Answer : ANSWER: W -- QUARTZ

An agate is a form of what mineral? w) magnetite x) feldspar y) quartz z) copper

Description : An agate is a form of what mineral? w) magnetite x) feldspar y) quartz z) copper

Last Answer : ANSWER: Y -- QUARTZ

Which of the following minerals is NOT a silicate? w) orthoclase x) muscovite y) augite (pron: aw-jIt) z) magnetite

Description : Which of the following minerals is NOT a silicate? w) orthoclase x) muscovite y) augite (pron: aw-jIt) z) magnetite

Last Answer : ANSWER: Z -- MAGNETITE

"Fool's gold" is a common name for this mineral: w) halite x) cinnabar y) magnetite z) pyrite

Description : "Fool's gold" is a common name for this mineral: w) halite x) cinnabar y) magnetite z) pyrite 

Last Answer : ANSWER: Z -- PYRITE  

The rock that results from solidification of molten lava from a volcano is an example of which of the following ? (1) Igneous Rock (2) Granite Rock (3) Basalt Rock (4) Magnetite

Description : The rock that results from solidification of molten lava from a volcano is an example of which of the following ? (1) Igneous Rock (2) Granite Rock (3) Basalt Rock (4) Magnetite

Last Answer : Igneous Rock 

Which ores are usually heavier ?

Description : Which ores are usually heavier ?

Last Answer : Oxide ores are usually heavier.