Description : The chemical union of iron, oxygen and water forms w) magnetite x) hematite y) limonite z) pyrite
Last Answer : ANSWER: Y -- LIMONITE
Description : What formula would 2 nitrogen atoms 1 oxygen atom and amp 2 carbon atoms make up?
Last Answer : The formula would thus be C2N2O.
Description : Which chemical formula shows 2 atoms of iron and 3 atoms of oxygen?
Last Answer : FE03
Description : What is the chemical formula for one carbon atom for every two oxygen atoms?
Last Answer : This molecule is carbon dioxide - CO2.
Description : What is the signal of magnetite ?
Last Answer : The chemical signal of magnetite is Fe₃O₄
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.
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.
Description : Which of the following ores does not contain iron? (1) Haematite (2) Magnetite (3) Limonite (4) Cassiterite
Last Answer : (4) Cassiterite
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.
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.
Description : Which one of the following is a mineral of iron? (1) Magnetite (2) Malachite (3) Cassiterite (4) Pyrolusite
Last Answer : Magnetite
Description : Which of the following is an iron ore ? (1) Bauxite (2) Magnetite (3) Lignite (4) Nitrite
Description : The most important ore of lead is (1) Galena (2) Magnetite (3) Pyrolusite (4) Siderite
Last Answer : Galena
Description : Which mineral is the ore of aluminium ? (1) Haematite (2) Bauxite (3) Magnetite (4) Siderite
Last Answer : Bauxite
Description : The iron ore which contains 72% of iron is : (1) Magnetite (2) Limonite (3) Haematite (4) Siderite
Description : Among the following iron ores, the highest percentage of iron content is found in— (1) Haemetite (2) Magnetite (3) Limnonite (4) None of these
Last Answer : Haemetite
Description : How many atoms does one formula unit of gold sulfide have altogether?
Last Answer : The chemical formula of gold sulfide is Au2S; three atoms are here.
Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane
Last Answer : Benzene
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.
Description : Is magnetite expensive?
Last Answer : Feel Free to Answer
Description : Is magnetite a silicate or nonsilicate?
Last Answer : Need answer
Description : The most important ore of aluminium is (a) Bauxite (b) Magnetite (c) Haematite (d) Monazite
Last Answer : Ans:(a)
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).
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.
Description : The iron ore magnetite consists of?
Last Answer : Fe203
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
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
Description : Minimum of 40% of iron, is available in (A) Magnetite (B) Red haematite (C) Limonite (D) Black band
Last Answer : Answer: Option D
Description : Upto a maximum of 72% of iron, is available in (A) Magnetite (B) Limonite (C) Siderite (D) Iron pyrites
Description : The principal mineral in most sand beaches is w) quartz x) orthoclase y) magnetite z) muscovite
Last Answer : ANSWER: W -- QUARTZ
Description : An agate is a form of what mineral? w) magnetite x) feldspar y) quartz z) copper
Last Answer : ANSWER: Y -- QUARTZ
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
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
Description : "Fool's gold" is a common name for this mineral: w) halite x) cinnabar y) magnetite z) pyrite
Last Answer : ANSWER: Z -- PYRITE
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
Description : What is the number of atoms in 1 gram of atomic oxygen ?
Last Answer : 1 gram-atom Number of atoms in oxygen = 6.023 x 1023
Description : In an oxygen molecule, two atoms are united by - (1) one bond (2) two bonds (3) three bonds (4) four bonds
Last Answer : (2) two bonds Explanation: Two oxygen atoms can both achieve stable structures by sharing two pairs of electrons as in the diagram. Two electrons of each of the atom in the oxygen molecule ... is shown conventionally by two lines joining the atoms. Each line represents one pair of shared electrons.
Description : Heavy water is so called because it contains - (1) Heavy isotope of hydrogen (2) Heavy isotope of oxygen (3) Mole number of hydrogen atoms (4) Mole number of oxygen atoms
Last Answer : (1) Heavy isotope of hydrogen Explanation: Heavy water, formally called deuterium oxide, is a form of "water that contains a larger than normal amount of the hydrogen isotope deuterium, (also known as ... ) rather than the common hydrogen-1 isotope that makes up most of the hydrogen in normal water.
Description : Molecular oxygen is said to be paramagnetic. This indicates that molecular oxygen: w) is a gas at room temperature x) forms molecules containing two oxygen atoms y) has an approximate molecular weight of 32 z) has unpaired electrons
Last Answer : ANSWER: Z -- HAS UNPAIRED ELECTRONS
Description : How many atoms of oxygen are in a glucose molecule w) 2 x) 6 y) 10 z) 12
Last Answer : ANSWER: X -- 6
Description : List the following atoms in order of increasing electron affinity: oxygen, boron, and fluorine.
Last Answer : ANSWER: (1) BORON, (2) OXYGEN, (3) FLUORINE
Description : Which one of the following atoms has two unpaired electrons in its ground state: w) Sodium x) Calcium y) Oxygen z) Aluminum
Last Answer : ANSWER: Y -- OXYGEN
Description : In an oxygen molecule, two atoms are united by (1) one bond (2) two bonds (3) three bonds (4) four bonds
Last Answer : two bonds
Description : Heavy water is so called because it contains (1) Heavy isotope of hydrogen (2) Heavy isotope of oxygen (3) Mole number of hydrogen atoms (4) Mole number of oxygen atoms
Last Answer : Heavy isotope of hydrogen
Description : What is the formula of the compound formed between magnesium and oxygen? A MgO B Mg2O2 C Mg2O3 D MgO2 E Mg2O
Last Answer : A MgO
Description : what are the total number of formula of atoms in each formula in NH4C2H3O2?
Last Answer : 12 atoms in this formula. 1+4+2+3+2.
Description : A compound contains atoms A, B and C. The oxidation number A is `+2`, of B is `+5` and of C is `-2`. The possible formula of the compound is :
Last Answer : A compound contains atoms A, B and C. The oxidation number A is `+2`, of B is `+5` and of C is `-2`. The ... BC_(4))_(2)` D. `A_(3)(B_(4)C)_(2)`
Description : What formula represents the number types and arrangement of atoms?
Last Answer : This is a chemical formula.