Which one of the following pairs is NOT correctly matched? (1) Haematite : Copper (2) Bauxite : Aluminium (3) Monazite : Thorium (4) Pitchblende : Uranium

1 Answer

Answer :

(1) Haematite : Copper Explanation: Haematite is the mineral form of iron oxide (Fe2O3), one of several iron oxides. It is mined as the main ore of iron. Hematite is harder than pure iron, but much more brittle.

Related questions

Description : Which one of the following pairs is NOT correctly matched? (1) Haematite : Copper (2) Bauxite : Aluminium (3) Monazite : Thorium (4) Pitchblende : Uranium

Last Answer : Haematite : Copper

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

Last Answer : Ans:(a)

Description : The main ore of thorium is (A) Pitchblende (B) Monazite sand (C) Limonite (D) Galena

Last Answer : (B) Monazite sand

Description : The main ore of uranium is (A) Pitchblende (B) Monazite sand (C) Cassiterite (D) Chalcopyrite

Last Answer : (A) Pitchblende

Description : The monazite sands on the Kerala coasts, used for generating nuclear energy contain – (1) platinum (2) copper (3) uranium (4) bauxite

Last Answer : (3) uranium Explanation: Monazite sands contain uranium.

Description : Which one of the following minerals is found in Monazite sand? (1) Potassium (2) Uranium (3) Thorium (4) Sodium

Last Answer : (3) Thorium Explanation: Monazite is a reddish-brown phosphate mineral containing rare earth metals. It occurs usually in small isolated crystals. There are actually at least four different kinds of monazite, depending on relative ... 5.0 to 5.5 and is relatively dense, about 4.6 to 5.7 g/ cm3.

Description : Which one of the following minerals is found in Monazite sand ? (1) Potassium (2) Uranium (3) Thorium (4) Sodium

Last Answer : Thorium

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

Last Answer : (D) Pitchblende

Description : Main source of __________ is monazite sand. (A) Uranium (B) Polonium (C) Hafnium (D) Thorium

Last Answer : (D) Thorium

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 : The important ore of aluminium is – (1) bauxite (2) cryolite (3) fluorspar (4) haematite

Last Answer : (1) bauxite Explanation: Bauxite is an aluminium ore and is the main source of aluminium. This form of rock consists mostly of the minerals gibbsite, boehmite and diaspore , in a mixture ... it was first recognized as containing aluminium and named by the French geologist Pierre Berthier in 1821.

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

Last Answer : Bauxite

Description : The important ore of aluminium is (1) bauxite (2) cryolite (3) fluorspar (4) haematite

Last Answer : bauxite

Description : Which of the following pairs is not correctly matched? (A) Uranium - 233 : Fertile material (B) Binding energy : Mass defect (C) Scattering: Absorption cross-section (D) Number of nucleons : Mass number

Last Answer : (A) Uranium - 233 : Fertile material

Description : Which of the following is NOT correctly matched? (1) Russia - Bauxite (2) Mexico — Silver (3) Bolivia — Tin (4) U.S.A. — Copper

Last Answer : (1) Russia - Bauxite Explanation: In 2010, Australia was the top producer of bauxite with almost one-third of the world's production, followed by China, Brazil, India, and Guinea, ... worldwide demands for aluminium for many cerituries. Russia was the 15th largest bauxite producer in this list.

Description : Which of the following is NOT correctly matched ? (1) Russia – Bauxite (2) Mexico – Silver (3) Bolivia – Tin (4) U.S.A. – Copper

Last Answer : Russia – Bauxite

Description : In which one of the following pairs is the specific characteristic of a soil not correctly matched? (a) Laterite – Contains aluminium compound (b) Terra rosa – Most suitable for roses (c) Chernozems – Richest soil in the world (d) Black soil – Rich in calcium carbonate

Last Answer : (d) Black soil – Rich in calcium carbonate

Description : Which of the following elements does not exhibit natural radioactivity? (1) Uranium (2) Thorium (3) Aluminium (4) Polonium

Last Answer : (3) Aluminium Explanation: Uranium, Thorium and Polonium are radioactive elements which do not have stable naturally occur-ring isotope. Aluminium is a silvery white, soft, ductile metal. It is the third ... element (after oxygen and silicon), and the most abundant metal in the Earth's crust.

Description : Which of the following elements does not exhibit natural radioactivity ? (1) Uranium (2) Thorium (3) Aluminium (4) Polonium

Last Answer : Aluminium

Description : 'Monazite' is an ore of - (1) Sodium (2) Titaniurm (3) Thorium (4) Zirconium

Last Answer : (3) Thorium Explanation: Monazite is an important ore for thorium, lanthanum, and cerium. It is often found in placer deposits. India, Madagascar, and South Africa have large deposits of monazite sands.

Description : Name the element discovered upon its extraction from pitchblende? w) platinum x) uranium y) iridium z) plutonium

Last Answer : ANSWER: X -- URANIUM

Description : Which State of India has the largest reserves of monazite, with a high thorium content? -Do You Know?

Last Answer : answer:

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

Description : Which State of India has the largest reserves of monazite, with a high thorium content? [CPO SI 2002] (a) Kerala (b) Karnataka (c) Gujarat (d) Maharashtra

Last Answer : Ans: (a)

Description : Which State of India has the largest reserves of monazite, with a high thorium content? (1) Kerala (2) Karnataka (3) Gujarat (4) Maharashtra

Last Answer : (1) Kerala Explanation: Monazite is a reddish-brown phosphate mineral containing rare earth metals. It occurs usually in small isolated crystals. Monazite is an important ore for thorium, lanthanum, and ... , which hold 70 per cent-plus of India's estimated monazite reserve of 18 million tonnes.

Description : The most extensive; commercially use- ful source of thorium as monazite sand occurs in India at?

Last Answer : Travancore coast

Description : Which State of India has the largest reserves of monazite, with a high thorium content?

Last Answer : Kerala

Description : Indian monazite sand contains __________ percent thorium. (A) 10 (B) 25 (C) 60 (D) 90

Last Answer : (A) 10

Description : Iron is extracted from - (1) Cinnabar (2) Haematite (3) Bauxite (4) Dolomite

Last Answer : (2) Haematite Explanation: Haematite is mined as the main ore of iron. It is harder than pure iron, but much more brittle. It is coloured black to steel or silver-gray, brown to reddish brown, or red.

Description : Which one of the following mineral does not contain oxygen? (1) Haematite (2) Bauxite (3) Cryolite (4) Calcite

Last Answer : (3) Cryolite Explanation: Cryolite (Na3AlF6, sodium hexafluoroaluminate) does not contain oxygen. It occurs as glassy, colorless, white-reddish to gray-black prismatic monoclinic crystals. Cryolite is used as an insecticide and a pesticide. It is also used to give fireworks a yellow color.

Description : Which one of the following mineral does not contain oxygen ? (1) Haematite (2) Bauxite (3) Cryolite (4) Calcite

Last Answer : Cryolite

Description : Iron is extracted from (1) Cinnabar (2) Haematite (3) Bauxite (4) Dolomite

Last Answer : Haematite

Description : Which of the following is not an ore of uranium? (A) Pitchblende (B) Kyanite (C) Carnotite (D) Rescolite

Last Answer : (B) Kyanite

Description : Uranium is recovered from its ore (pitchblende) by (A) Froth floatation technique (B) Leaching with sulphuric acid (C) Smelting in a furnace (D) Dissolving in water

Last Answer : (B) Leaching with sulphuric acid

Description : What is the principal ore of aluminium? (1) Dolomite (2) Copper (3) Lignite (4) Bauxite

Last Answer : (4) Bauxite Explanation: Bacodte is an aluminium ore and is the main source of aluminium. This form of rock consists mostly of the minerals gibbsite, boehmite , and diaspore , in a mixture ... it was first recognised as containing aluminium and named by the French geologist Pierre Berthier in 1821.

Description : What is the principal ore of aluminium ? (1) Dolomite (2) Copper (3) Lignite (4) Bauxite

Last Answer : Bauxite

Description : The Vindhyan system of rocks is important for the production of [CDS 2011] (a) precious stones and building materials (b) iron ore and manganese (c) bauxite and mica (d) copper and uranium

Last Answer : Ans: (a)

Description : Uranium percentage in monazite sand is about (A) 0.01 (B) 0.25 (C) 1.2 (D) 7

Last Answer : (B) 0.25

Description : Which of the following is an ore of iron? (a) Bauxite (b) Haematite (c) Dolomite (d) Alunite

Last Answer : Ans: (b)

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

Description : Bauxite is the ore of (a) Aluminium (b) Copper (c) Zinc (d) Mica

Last Answer : Ans: (a)

Description : What is mainly obtained from bauxite? (a) Copper (b) Aluminium (c) Iron (d) Gold

Last Answer : Ans:(b)

Description : Bauxite is an ore of-----? A. copper B. zinc C. aluminium (Answer) D. iron

Last Answer : C. aluminium (Answer)

Description : Examine the following pairs that give the level of government in India and the powers of the government at that level to make laws on the subjects mentioned against each Which of the following pairs is not correctly matched ? -SST 10th

Last Answer : The residuary powers of legislation are vested in Parliament. The framers of the Constitution had placed matters of national concern in the Union List and those of purely State or local significance in the ... the Union were placed in the Concurrent List Hence, option (d) is not correctly matched.

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Last Answer : Which of the following pairs are correctly matched ? A. only (a) and (b) B. (a), ( c), and (d) C. (b), ( c) and (d) D. only (a) and (d)

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Description : Which one of the following pairs is correctly matched with regard to the codon and the amino acid coded by it `?`

Last Answer : Which one of the following pairs is correctly matched with regard to the codon and the amino acid coded ... AAA-lysine C. AUG-cysteine D. CCC-alanine

Description : Which of the following pairs is not correctly matched

Last Answer : Which of the following pairs is not correctly matched

Description : Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not m

Last Answer : Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal ... " , ," Ear ossicles "):}`