The chemical that is used to ripen mangoes is (1) Calcium sulphide (2) Calcium carbide (3) Calcium carbonate (4) Calcium chloride

The chemical that is used to ripen mangoes is (1) Calcium sulphide (2) Calcium carbide (3) Calcium carbonate (4) Calcium chloride
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Calcium carbide
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The chemical that is used to ripen mangoes is - (1) Calcium sulphide (2) Calcium carbide (3) Calcium carbonate (4) Calcium chloride

Description : The chemical that is used to ripen mangoes is - (1) Calcium sulphide (2) Calcium carbide (3) Calcium carbonate (4) Calcium chloride

Last Answer : (2) Calcium carbide Explanation: Calcium carbide is used for artificially ripening fruit. When calcium carbide comes in contact with moisture, it produces acetylene gas, which is quite ... the natural ripening agent ethylene. Acetylene acts like ethylene and accelerates the ripening process.

Which chemical is used to ripen mangoes artificially? (1) Sulphur Dioxide (2) Nitrous Oxide (3) Calcium Carbide (4) Phosphorous

Description : Which chemical is used to ripen mangoes artificially? (1) Sulphur Dioxide (2) Nitrous Oxide (3) Calcium Carbide (4) Phosphorous

Last Answer : (3) Calcium Carbide Explanation: The chemical widely used for artificially ripening fruits is calcium carbide (CaC2). It is used to ripen about 80 per cent of mangoes in India.

Write the molecular formulae of: 1. Copper oxide 2. Iron (III) chloride 3. Sodium hydroxide 4. Iron (II) sulphide 5. Lead (II) oxide 6. Hydrogen nitrate (nitric acid) 7. Hydrogen sulphate (sulphuric acid) 8. Calcium hydroxide 9. Magnesium carbonate 10.Ammonium carbonate

Description : Write the molecular formulae of: 1. Copper oxide 2. Iron (III) chloride 3. Sodium hydroxide 4. Iron (II) sulphide 5. Lead (II) oxide 6. Hydrogen nitrate (nitric ... Hydrogen sulphate (sulphuric acid) 8. Calcium hydroxide 9. Magnesium carbonate 10.Ammonium carbonate

Last Answer : 1. Copper oxide - CuO 2. Iron (III) chloride - FeCl3 3. Sodium hydroxide - NaOH 4. Iron (II) sulphide - FeS 5. Lead (II) oxide - PbO 6. Hydrogen nitrate (nitric acid) - HNO3 7. ... ) - H2SO4 8. Calcium hydroxide - Ca(OH)2 9. Magnesium carbonate - MgCO3 10.Ammonium carbonate - (NH4)2CO3

Calcium salts used as fertilizer is – (1) Calcium Carbide (2) Calcium Carbonate (3) Calcium Cyanide (4) Calcium Sulphate

Description : Calcium salts used as fertilizer is – (1) Calcium Carbide (2) Calcium Carbonate (3) Calcium Cyanide (4) Calcium Sulphate

Last Answer : (4) Calcium Sulphate Explanation: Sulphur (as sulphate) is a major plant nutrient, and is essential for crop growth. Calcium Sulphate (gypsum) is used to improve soil quality. Calcium sulphate ... It is mainly used for the reclamation of sodic soils through ion exchange (calcium replacing sodium).

Calcium salts used as fertilizer is : (1) Calcium Carbide (2) Calcium Carbonate (3) Calcium Cyanide (4) Calcium Sulphate

Description : Calcium salts used as fertilizer is : (1) Calcium Carbide (2) Calcium Carbonate (3) Calcium Cyanide (4) Calcium Sulphate

Last Answer :  Calcium Sulphate

The chemical name of "Plaster of Paris" commonly used for setting broken bones is – (1) Calcium nitrate (2) Calcium sulphate (3) Calcium carbonate (4) Calcium chloride

Description : The chemical name of "Plaster of Paris" commonly used for setting broken bones is – (1) Calcium nitrate (2) Calcium sulphate (3) Calcium carbonate (4) Calcium chloride

Last Answer : (2) Calcium sulphate Explanation: Plaster of Paris is the common name of Calcium Sulphate hemihydrate, with chemical formula: CaSO4.1/2H2O. Plaster of Paris is produced by heating gypsum to about 150°C.

The chemical name of “Plaster of Paris” commonly used for setting broken bones is (1) Calcium nitrate (2) Calcium sulphate (3) Calcium carbonate (4) Calcium chloride

Description : The chemical name of “Plaster of Paris” commonly used for setting broken bones is (1) Calcium nitrate (2) Calcium sulphate (3) Calcium carbonate (4) Calcium chloride

Last Answer :  Calcium sulphate

Why are Calcium Carbide (CaC 2 ), Carbon monoxide (CO), Carbon dioxide (CO 2 ), Hydrogen cyanide (HCN) and calcium carbonate (CaCO 3 ) classified as inorganic compounds through they contain carbon?

Description : Why are Calcium Carbide (CaC 2 ), Carbon monoxide (CO), Carbon dioxide (CO 2 ), Hydrogen cyanide (HCN) and calcium carbonate (CaCO 3 ) classified as inorganic compounds through they contain carbon?

Last Answer : These compounds contain only one or two carbon atoms per formula unit and contain no carbon-carbon (C-C) bonds or carbon-hydrogen bonds. Hence they are classified as inorganic compounds.

how to ripen mangoes?

Description : how to ripen mangoes?

Last Answer : Need Answer

how to ripen mangoes

Description : how to ripen mangoes

Last Answer : Need Answer

What is the most common salt in sea water? (1) Calcium carbonate (2) Potassium chloride (3) Sodium chloride (4) Magnesium sulphate

Description : What is the most common salt in sea water? (1) Calcium carbonate (2) Potassium chloride (3) Sodium chloride (4) Magnesium sulphate

Last Answer : (3) Sodium chloride Explanation: Sodium chloride, also known as salt, common salt, table salt or halite, is an ionic compound with the formula NaCl, representing equal proportions of sodium and ... for the salinity of the ocean and of the extracellular fluid of many multi-cellular organisms.

Calcium carbonate is most soluble in: w) 0.2 Molar Sodium carbonate x) 0.1 Molar Calcium chloride y) 0.1 Molar Sodium hydroxide z) 0.1 Molar Hydrochloric acid

Description : Calcium carbonate is most soluble in: w) 0.2 Molar Sodium carbonate x) 0.1 Molar Calcium chloride y) 0.1 Molar Sodium hydroxide z) 0.1 Molar Hydrochloric acid

Last Answer : ANSWER: Z -- 0.1 MOLAR HYDROCHLORIC ACID

What is the most common salt in sea water ? (1) Calcium carbonate (2) Potassium chloride (3) Sodium chloride (4) Magnesium sulphate

Description : What is the most common salt in sea water ? (1) Calcium carbonate (2) Potassium chloride (3) Sodium chloride (4) Magnesium sulphate

Last Answer : Sodium chloride

The chemical name of baking soda is - (1) Sodium carbonate (2) Sodium bicarbonate (3) Sodium chloride (4) Sodium nitrate

Description : The chemical name of baking soda is - (1) Sodium carbonate (2) Sodium bicarbonate (3) Sodium chloride (4) Sodium nitrate

Last Answer : (2) Sodium bicarbonate Explanation: Sodium bicarbonate (NaHCO3) is also known as baking soda. It is a chemical leavening agent which is added to baked goods before cooking to produce carbon dioxide and cause them to 'rise'.

The chemical name of baking soda is (1) Sodium carbonate (2) Sodium bicarbonate (3) Sodium chloride (4) Sodium nitrate

Description : The chemical name of baking soda is (1) Sodium carbonate (2) Sodium bicarbonate (3) Sodium chloride (4) Sodium nitrate

Last Answer : Sodium bicarbonate

The major calcium salt in bones is (A) Calcium carbonate (B) Calcium chloride (C) Calcium hydroxide (D) Calcium phosphate

Description : The major calcium salt in bones is (A) Calcium carbonate (B) Calcium chloride (C) Calcium hydroxide (D) Calcium phosphate

Last Answer : Answer : D

A FDA – approved ingredient for protection against painful sensitivity of the teeth due to cold, heat, acids, sweets or contact is (a) Dicalcium phosphate (b) Sodium lauryl sulfate (c) 5% potassium nitrate (d) Zinc chloride (e) Calcium carbonate

Description : A FDA – approved ingredient for protection against painful sensitivity of the teeth due to cold, heat, acids, sweets or contact is (a) Dicalcium phosphate (b) Sodium lauryl sulfate (c) 5% potassium nitrate (d) Zinc chloride (e) Calcium carbonate

Last Answer : Ans: C

Lime water contains (a) sodium hydroxide (b) calcium hydroxide (c) sodium carbonate (d) calcium chloride

Description : Lime water contains (a) sodium hydroxide (b) calcium hydroxide (c) sodium carbonate (d) calcium chloride

Last Answer : Ans:(b)

Presence of __________ hardness is responsible for the temporary hardness in water. (A) Carbonate (B) Calcium (C) Chloride (D) Sulphate

Description : Presence of __________ hardness is responsible for the temporary hardness in water. (A) Carbonate (B) Calcium (C) Chloride (D) Sulphate

Last Answer : (B) Calcium

Pick up the correct statement from the following: (A) Lime is available in Free State (B) Lime is available by dissolving calcium carbonate in water (C) Lime is available by calcining calcium carbonate at 900°C (D) Lime is nothing but calcium chloride

Description : Pick up the correct statement from the following: (A) Lime is available in Free State (B) Lime is available by dissolving calcium carbonate in water (C) Lime is available by calcining calcium carbonate at 900°C (D) Lime is nothing but calcium chloride

Last Answer : Answer: Option C

The most common admixture which is used to accelerate the initial set of concrete is (A) Gypsum (B) Calcium chloride (C) Calcium carbonate (D) None of the above

Description : The most common admixture which is used to accelerate the initial set of concrete is (A) Gypsum (B) Calcium chloride (C) Calcium carbonate (D) None of the above

Last Answer : Answer: Option B

The most commonly used retarder in cement is (A) Gypsum (B) Calcium chloride (C) Calcium carbonate (D) None of the above

Description : The most commonly used retarder in cement is (A) Gypsum (B) Calcium chloride (C) Calcium carbonate (D) None of the above

Last Answer : Answer: Option A

The Most common admixture used to accelerate the initial setting of concrete is a) Gypsum b) Calcium chloride* c) Calcium carbonate d) Calcium bicarbonate

Description : The Most common admixture used to accelerate the initial setting of concrete is a) Gypsum b) Calcium chloride* c) Calcium carbonate d) Calcium bicarbonate

Last Answer : b) Calcium chloride*

What are the chemical signals of calcium carbonate ?

Description : What are the chemical signals of calcium carbonate ?

Last Answer : Chemical signals of calcium carbonate - CaCO 3

In Kraft process of paper manufacture, white cooking liquor consists of caustic soda (A) Sodium sulphide & sodium carbonate (B) Sodium sulphite & sodium carbonate (C) Sodium sulphite & sodium sulphide (D) None of these

Description : In Kraft process of paper manufacture, white cooking liquor consists of caustic soda (A) Sodium sulphide & sodium carbonate (B) Sodium sulphite & sodium carbonate (C) Sodium sulphite & sodium sulphide (D) None of these

Last Answer : (A) Sodium sulphide & sodium carbonate

The gas involved in Bhopal incident was - (1) Hydrogen sulphide (2) Nitrogen dioxide (3) Methyl chloride (4) Methyl isocyanide

Description : The gas involved in Bhopal incident was - (1) Hydrogen sulphide (2) Nitrogen dioxide (3) Methyl chloride (4) Methyl isocyanide

Last Answer : (4) Methyl isocyanide

The gas involved in Bhopal incident was (1) Hydrogen sulphide (2) Nitrogen dioxide (3) Methyl chloride (4) Methyl isocyanide

Description : The gas involved in Bhopal incident was (1) Hydrogen sulphide (2) Nitrogen dioxide (3) Methyl chloride (4) Methyl isocyanide

Last Answer : Methyl isocyanide

What is the name and chemical formula of the main product formed by heating baking soda. (a) sodium carbonate,Na 2 CO 3 (b) Bleaching powder ,CaOCl 2 (c) sodium chloride,Na Cl (d)Plaster of paris ,CaSO 4 .I/2H 2 O

Description : What is the name and chemical formula of the main product formed by heating baking soda. (a) sodium carbonate,Na 2 CO 3 (b) Bleaching powder ,CaOCl 2 (c) sodium chloride,Na Cl (d)Plaster of paris ,CaSO 4 .I/2H 2 O

Last Answer : (a) sodium carbonate,Na 2 CO 3

Carborundum is another name of – (1) Silicon carbide (2) Silicon oxide (3) Calcium carbide (4) Calcium oxide

Description : Carborundum is another name of – (1) Silicon carbide (2) Silicon oxide (3) Calcium carbide (4) Calcium oxide

Last Answer : (1) Silicon carbide Explanation: Silicon carbide, also known as carborundum, is a compound of silicon and carbon with chemical formula SiC. It occurs in nature as the extremely rare mineral moissanite. Silicon carbide powder has been massproduced since 1893 for use as an abrasive.

What is the gaseous product formed from the reaction of calcium carbide and water?

Description : What is the gaseous product formed from the reaction of calcium carbide and water?

Last Answer : ANSWER: ACETYLENE (or ETHYNE OR C2H2)

Carborundum is another name of (1) Silicon carbide (2) Silicon oxide (3) Calcium carbide (4) Calcium oxide

Description : Carborundum is another name of (1) Silicon carbide (2) Silicon oxide (3) Calcium carbide (4) Calcium oxide

Last Answer :  Silicon carbide

Which of the following is also known as 'Galena'? (1) Lead sulphate (2) Lead oxide (3) Lead sulphide (4) Calcium sulphate

Description : Which of the following is also known as 'Galena'? (1) Lead sulphate (2) Lead oxide (3) Lead sulphide (4) Calcium sulphate

Last Answer : (3) Lead sulphide Explanation: Galena, also called lead glance, is the natural mineral form of lead sulfide. It is the most important ore of lead and an important source of silver.

Write the molecular formula for the oxide and sulphide of following elements. (a) Sodium (b) Calcium (c) Hydrogen

Description : Write the molecular formula for the oxide and sulphide of following elements. (a) Sodium (b) Calcium (c) Hydrogen

Last Answer : (a) Sodium oxide Na2O Sodium sulphide Na2S (b) Calcium oxide CaO Calcium sulphide CaS (c) Hydrogen oxide H2O Hydrogen sulphide H2S

What are the chemical signals of calcium carbonate (limestone) ?

Description : What are the chemical signals of calcium carbonate (limestone) ?

Last Answer : Chemical symbol of calcium carbonate (limestone) CaCO3

Chemical name of bleaching powder is (1) Calcium chlorate (2) Calcium hypochlorite (3) Calcium chloro hypochlorite (4) Calcium bi chloride

Description : Chemical name of bleaching powder is (1) Calcium chlorate (2) Calcium hypochlorite (3) Calcium chloro hypochlorite (4) Calcium bi chloride

Last Answer : (2) Calcium hypochlorite Explanation: Calcium hypochlorite is a chemical compound with formula Ca(ClO)2. It is widely used for water treatment and as a bleaching agent. This chemical is considered to be relatively stable and has greater available chlorine than sodium hypochlorite.

The chemical substance present in bones and teeth is - (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Description : The chemical substance present in bones and teeth is - (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Last Answer : (1) Calcium phosphate Explanation: Seventy percent of bone consists of hydroxyapatite, a calcium phosphate mineral (known as bone mineral). Tooth enamel is composed of almost ninety percent hydroxylapatite.

The chemical substance present in bones and teeth is - (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Description : The chemical substance present in bones and teeth is - (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Last Answer : (1) Calcium phosphate Explanation: Seventy percent of bone consists of hydroxyapatite, a calcium phosphate mineral. (known as bone mineral). Tooth enamel is composed of almost ninety percent hydroxylapatite.

The chemical name of 'Common salt' is (1) Sodium chloride (2) Sodium nitrate (3) Ammonium chloride (4) Calcium chloride

Description : The chemical name of 'Common salt' is (1) Sodium chloride (2) Sodium nitrate (3) Ammonium chloride (4) Calcium chloride

Last Answer : (1) Sodium chloride Explanation: Sodium chloride, also known as salt, common salt, table salt or halite, is an ionic compound with the formula NaCl, representing equal proportions of sodium and ... each ion is surrounded by six ions of, the opposite charge as expected on electrostatic grounds.

Write balanced chemical equations for the following word equations: (a) Iron + Chlorine → Iron (III) chloride (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water (c) Magnesium + oxygen → Magnesium oxide (d) Calcium oxide + water → Calcium hydroxide (e) Sodium + chlorine → Sodium chloride

Description : Write balanced chemical equations for the following word equations: (a) Iron + Chlorine → Iron (III) chloride (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water (c) Magnesium + oxygen → ... oxide (d) Calcium oxide + water → Calcium hydroxide (e) Sodium + chlorine → Sodium chloride

Last Answer : (a) Iron + Chlorine → Iron (III) chloride 4Fe + 3Cl2 → 2F2Cl3 (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water 2Mg + 2H2SO4 → 2MgSO4 + 2H2 (c) Magnesium + oxygen → Magnesium oxide 2Mg ... hydroxide CaO + H2O → Ca(OH)2 (e) Sodium + chlorine → Sodium chloride 2Na + Cl2 → 2NaCl

The chemical substance present in bones and teeth is (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Description : The chemical substance present in bones and teeth is (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Last Answer : Calcium phosphate

Chemical name of bleaching powder is : (1) Calcium chlorate (2) Calcium hypochlorite (3) Calcium chloro hypochlorite (4) Calcium bi chloride

Description : Chemical name of bleaching powder is : (1) Calcium chlorate (2) Calcium hypochlorite (3) Calcium chloro hypochlorite (4) Calcium bi chloride

Last Answer : Calcium hypochlorite

The chemical name of ‘Common salt’ is (1) Sodium chloride (2) Sodium nitrate (3) Ammonium chloride (4) Calcium chloride

Description : The chemical name of ‘Common salt’ is (1) Sodium chloride (2) Sodium nitrate (3) Ammonium chloride (4) Calcium chloride

Last Answer : Sodium chloride

PVC stands for (A) Plastic very compact (B) Polythene vinyl chloride (C) Polythene vinyl carbon (D) Polythene vanadium carbide

Description : PVC stands for (A) Plastic very compact (B) Polythene vinyl chloride (C) Polythene vinyl carbon (D) Polythene vanadium carbide

Last Answer : Answer: Option B

(4) sodium chloride contains hygroscopic impurities like magnesium chloride Explanation: Table salt is refined salt, which contains about 97 to 99 percent sodium chloride. It usually contains substances that make it freeflowing (anticaking agents) such as sodium aluminosilicate or magnesium carbonate. Because of Hygroscopic nature of salt it become wet in rainy season as the salt absorbs moisture from environment.

Description : (4) sodium chloride contains hygroscopic impurities like magnesium chloride Explanation: Table salt is refined salt, which contains about 97 to 99 percent sodium chloride. It usually contains substances that ... of salt it become wet in rainy season as the salt absorbs moisture from environment.

Last Answer : Which of the following could be used as fuel in propellant or rockets? (1) Liquid Hydrogen + Liquid Nitrogen (2) Liquid Oxygen + Liquid Argon (3) Liquid Nitrogen + Liquid Oxygen (4) Liquid Hydrogen + Liquid Oxygen

Milk of magnesia is a suspension of – (1) magnesium sulphate (2) magnesium carbonate (3) magnesium hydroxide (4) magnesium Chloride

Description : Milk of magnesia is a suspension of – (1) magnesium sulphate (2) magnesium carbonate (3) magnesium hydroxide (4) magnesium Chloride

Last Answer : (3) magnesium hydroxide Explanation: Milk of magnesia is a suspension of magnesium hydroxide due to its milk-like appearance.

`Milk of Magnesia' is a suspension of – (1) magnesium sulphate (2) magnesium carbonate (3) magnesium hydroxide (4) magnesium chloride

Description : `Milk of Magnesia' is a suspension of – (1) magnesium sulphate (2) magnesium carbonate (3) magnesium hydroxide (4) magnesium chloride

Last Answer : (3) magnesium hydroxide Explanation: Magnesium hydroxide is an inorganic compound with the chemical formula Mg(OH)2. As a suspension in water. it is often called milk of magnesia because of its milk-like appearance.

The term PVC used in the plastic industry stands for - (1) polyvinyl chloride (2) polyvinyl carbonate (3) phosphor vanadium chloride (4) phosphavinyl chloride

Description : The term PVC used in the plastic industry stands for - (1) polyvinyl chloride (2) polyvinyl carbonate (3) phosphor vanadium chloride (4) phosphavinyl chloride

Last Answer : (1) polyvinyl chloride Explanation: Polyvinyl chloride is the world's third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene. About 40 million tones are produced per year.

Milk of magnesia is a suspension of – (1) magnesium sulphate (2) magnesium carbonate (3) magnesium hydroxide (4) magnesium Chloride

Description : Milk of magnesia is a suspension of – (1) magnesium sulphate (2) magnesium carbonate (3) magnesium hydroxide (4) magnesium Chloride

Last Answer : (3) magnesium hydroxide Explanation: Milk of magnesia is a suspension of magnesium hydroxide due to its milk-like appearance.

Which one of the following compounds is amphiprotic in water? w) sodium chloride x) sodium sulfate y) sodium hydride z) sodium hydrogen carbonate

Description : Which one of the following compounds is amphiprotic in water? w) sodium chloride x) sodium sulfate y) sodium hydride z) sodium hydrogen carbonate

Last Answer : ANSWER: Z -- SODIUM HYDROGEN CARBONATE

The pH of water will be decreased to below pH 7 by the hydrolysis of which of the following? w) sodium carbonate x) sodium chloride y) ammonium chloride z) potassium bromide

Description : The pH of water will be decreased to below pH 7 by the hydrolysis of which of the following? w) sodium carbonate x) sodium chloride y) ammonium chloride z) potassium bromide

Last Answer : ANSWER: C -- AMMONIUM CHLORIDE