Raphides are the crystals of: (a) Calcium oxalate (b) Calcium (c) Calcium phosphate (d) Calcium carbonate

Raphides are the crystals of: (a) Calcium oxalate (b) Calcium (c) Calcium phosphate (d) Calcium carbonate
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Ans. ((a))
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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

Tooth enamel is the hardest substance found in the human body. What is it made up of - (1) Calcium carbonate (2) Limestone (3) Calcium phosphate (4) Calcium fluoride

Description : Tooth enamel is the hardest substance found in the human body. What is it made up of - (1) Calcium carbonate (2) Limestone (3) Calcium phosphate (4) Calcium fluoride

Last Answer : (3) Calcium phosphate Explanation: The protective layer around your teeth, called enamel, is the strongest substance that our body produces. In fact, tooth enamel is stronger than any other substance on earth except for diamonds.

What is the main component of bones and teeth? A. Calcium carbonate B. Calcium phosphate (Answer) C. Calcium sulphate D. Calcium nitrate

Description : What is the main component of bones and teeth? A. Calcium carbonate B. Calcium phosphate (Answer) C. Calcium sulphate D. Calcium nitrate

Last Answer : B. Calcium phosphate (Answer)

Tooth enamel is made up of: a) Potassium b) Calcium carbonate c) Calcium phosphate d) Calcium oxide

Description : Tooth enamel is made up of: a) Potassium b) Calcium carbonate c) Calcium phosphate d) Calcium oxide

Last Answer : c) Calcium phosphate

Main component of bone ash is (A) Calcium sulphate (B) Calcium phosphate (C) Calcium carbonate (D) Sodium phosphate

Description : Main component of bone ash is (A) Calcium sulphate (B) Calcium phosphate (C) Calcium carbonate (D) Sodium phosphate

Last Answer : what is the answer ?

What is the main component of bones and teeth? A.Calcium carbonate B.Calcium phosphate C.Calcium sulphate D.Calcium nitrate

Description : What is the main component of bones and teeth? A.Calcium carbonate B.Calcium phosphate C.Calcium sulphate D.Calcium nitrate

Last Answer : B.Calcium phosphate

Carbamoyl phosphate synthetase structure is marked by change in the presence of (A) N-Acetyl glutamate (B) N-Acetyl Aspartate (C) Neuraminic acid (D) Oxalate

Description : Carbamoyl phosphate synthetase structure is marked by change in the presence of (A) N-Acetyl glutamate (B) N-Acetyl Aspartate (C) Neuraminic acid (D) Oxalate

Last Answer : Answer : A

Select the correct statement: (1) C4 pathway for. CO2 fixation were discovered by Hatch and Slack (2) CO2 is essential for photosynthesis (3) Addition of sodium carbonate in water retards photosynthetic rate in vallisneria (4) Phloem is the principal pathway for translocation of solutes

Description : Select the correct statement: (1) C4 pathway for. CO2 fixation were discovered by Hatch and Slack (2) CO2 is essential for photosynthesis (3) Addition of sodium carbonate in water retards photosynthetic rate in vallisneria (4) Phloem is the principal pathway for translocation of solutes

Last Answer : Ans. ((c))

Sodium carbonate crystals lose water molecules. What is this property called?

Description : Sodium carbonate crystals lose water molecules. What is this property called?

Last Answer : Efflorescence

Intestinal absorption of magnesium is increased in (A) Calcium deficient diet (B) High calcium diet (C) High oxalate diet (D) High phytate diet

Description : Intestinal absorption of magnesium is increased in (A) Calcium deficient diet (B) High calcium diet (C) High oxalate diet (D) High phytate diet

Last Answer : Answer : A

Kidney stones are mainly formed by which of the following compound - (1) Sodium chloride (2) Silicates (3) Calcium bicarbonate (4) Calcium oxalate

Description : Kidney stones are mainly formed by which of the following compound - (1) Sodium chloride (2) Silicates (3) Calcium bicarbonate (4) Calcium oxalate

Last Answer : (4) Calcium oxalate Explanation: Kidney stones form when your urine contains more crystal-forming substances — such as calcium, oxalate and uric acid — than the fluid in your urine can dilute.

Which one of the following is found in kidney stones? (1) Sodium oxalate (2) Calcium oxalate (3) Sodium chloride (4) Calcium acetate

Description : Which one of the following is found in kidney stones? (1) Sodium oxalate (2) Calcium oxalate (3) Sodium chloride (4) Calcium acetate

Last Answer : (2) Calcium oxalate Explanation: Calcium is one component of the most common type of human kidney stones, calcium oxalate. Some studies suggest people who take supplemental calcium have a higher risk ... have been used as the basis for setting the recommended daily intake for calcium in adults.

The ‘stone’ formed in human kidney consist mostly of-------? A. Calcium oxalate (Answer) B. Sodium acetate C. Magnesium sulphate D. Calcium

Description : The ‘stone’ formed in human kidney consist mostly of-------? A. Calcium oxalate (Answer) B. Sodium acetate C. Magnesium sulphate D. Calcium

Last Answer : A. Calcium oxalate (Answer)

The name of the common mineral salt present in sweat is ? A. Calcium Oxalate B. Potassium Sulphate C. Sodium Chloride (Answer) D. Iron Sulphate E. None of these

Description : The name of the common mineral salt present in sweat is ? A. Calcium Oxalate B. Potassium Sulphate C. Sodium Chloride (Answer) D. Iron Sulphate E. None of these

Last Answer : C. Sodium Chloride (Answer)

You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes. Which of these you will not use for the purpose? (a) Test tube containing calcium bicarbonate (b) Chilled test tube (c) Test tube containing heparin (d) Test tube containing sodium oxalate

Description : You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes ... bicarbonate (b) Chilled test tube (c) Test tube containing heparin (d) Test tube containing sodium oxalate

Last Answer : (a) Test tube containing calcium bicarbonate

Which one of the following is found in kidney stones? (1) Sodium oxalate (2) Calcium oxalate (3) Sodium chloride (4) Calcium acetate

Description : Which one of the following is found in kidney stones? (1) Sodium oxalate (2) Calcium oxalate (3) Sodium chloride (4) Calcium acetate

Last Answer : Calcium oxalate

Calvin cycle is: (1) C3 cycle (2) Reductive pentose-phosphate cycle (3) Common in cereals uncommon in cereals (4) Uncommon in cereals

Description : Calvin cycle is: (1) C3 cycle (2) Reductive pentose-phosphate cycle (3) Common in cereals uncommon in cereals (4) Uncommon in cereals

Last Answer : Ans. ((c))

A nucleoside is: (a) purine/pyramidine + phosphate (b) purine/pyramidine + sugar (c) Pyramidine + purine + phosphate (d) Purine + sugar + phosphate

Description : A nucleoside is: (a) purine/pyramidine + phosphate (b) purine/pyramidine + sugar (c) Pyramidine + purine + phosphate (d) Purine + sugar + phosphate

Last Answer : Ans. ((b))

Which one is the major component of Bordeaux mixture a) Copper sulphate b) Sodium chloride c) Calcium chloride d) Magnesium sulphate

Description : Which one is the major component of Bordeaux mixture a) Copper sulphate b) Sodium chloride c) Calcium chloride d) Magnesium sulphate

Last Answer : a) Copper sulphate

Which of the following are the important floral rewards to the animal pollinators ? (a) Floral fragrance and calcium crystals (b) Protein pellicle and stigmatic exudates (c) Colour and large size of flower (d) Nectar and pollen grains

Description : Which of the following are the important floral rewards to the animal pollinators ? (a) Floral fragrance and calcium crystals (b) Protein pellicle and stigmatic exudates (c) Colour and large size of flower (d) Nectar and pollen grains

Last Answer : (d) Nectar and pollen grains

Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium(A) Carbonate(B) Phosphate(C) Bicarbonate(D) Silicate

Description : Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium (A) Carbonate (B) Phosphate (C) Bicarbonate (D) Silicate

Last Answer : (A) Carbonat

Calculate the mass of 6.022 × 1023 molecule of Calcium carbonate (CaCO3) -Chemistry 9th

Description : Calculate the mass of 6.022 × 1023 molecule of Calcium carbonate (CaCO3) -Chemistry 9th

Last Answer : Molar mass (Molecular mass in gram) of CaCO3 = 40+12+3×16 = 100 g No. of moles of CaCO3 = No. of molecules/Avogadro constant = 6.022 × 1023/ 6.022 × 1023 = 1 mole Mass of CaCO3 = No. of moles × molar mass = 1 × 100 g = 100 g

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

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

How much CO2 is formed by the reaction of 120g of phosphoric acid with limescale (calcium carbonate)? temperature 16 degrees pressure 98kPa

Description : How much CO2 is formed by the reaction of 120g of phosphoric acid with limescale (calcium carbonate)? temperature 16 degrees pressure 98kPa

Last Answer : Need Answer

The total number of protons in 10 g of calcium carbonate is `(N_(0) = 6.023 xx 10^(23))` :-

Description : The total number of protons in 10 g of calcium carbonate is `(N_(0) = 6.023 xx 10^(23))` :-

Last Answer : The total number of protons in 10 g of calcium carbonate is `(N_(0) = 6.023 xx 10^(23))` :- A. `1.5057 ... 3.0115 xx 10^(24)` D. `4.0956 xx 10^(24)`

What is the formula when calcium carbonate breaks down into carbon dioxide oxygen and calcium?

Description : What is the formula when calcium carbonate breaks down into carbon dioxide oxygen and calcium?

Last Answer : Need answer

In terms of particles how and why the rate of reaction changes during the reaction of calcium carbonate with hydrochloric acid.?

Description : In terms of particles how and why the rate of reaction changes during the reaction of calcium carbonate with hydrochloric acid.?

Last Answer : The chemical reaction goes faster if calcium carbonate is powdered.

What materials are mainly in calcium carbonate?

Description : What materials are mainly in calcium carbonate?

Last Answer : Need answer

Why sulphuric acid is not used in preparation of carbon dioxide from calcium carbonate?

Description : Why sulphuric acid is not used in preparation of carbon dioxide from calcium carbonate?

Last Answer : The formed calcium sulfate obtained as a product cover calciumcarbonate and stop the reaction.

How method of separating water and calcium carbonate?

Description : How method of separating water and calcium carbonate?

Last Answer : Evaporate the water from the solution.

What Mass Of Calcium Carbonate Is Needed For Complete Reaction With The HCl In 2HCl(aq) plus CaCO 3 (s) CaCl 2 (aq) plus H 2 O(l) plus CO 2 (g)?

Description : What Mass Of Calcium Carbonate Is Needed For Complete Reaction With The HCl In 2HCl(aq) plus CaCO 3 (s) CaCl 2 (aq) plus H 2 O(l) plus CO 2 (g)?

Last Answer : Need answer

What is reaction of calcium nitrate and potassium carbonate?

Description : What is reaction of calcium nitrate and potassium carbonate?

Last Answer : The chemical reaction is:Ca(NO3)2 + K2CO3 = CaCO3(s) + 2 KNO3

Calcium carbonate overdose?

Description : Calcium carbonate overdose?

Last Answer : DefinitionCalcium carbonate is an ingredient that is commonly found in antacids (for heartburn) and some dietary supplements. Calcium carbonate overdoseoccurs when someone accidentally ... calcium carbonate, includingCertain antacids (Tums, Chooz)Certain mineral supplementsCertain hand lotionsCer

Calcium carbonate decomposes into calcium oxide & carbon dioxide Her results:Mass of calcium carbonate before heating = 2.00 g Mass of calcium oxide left after heating = 1.12 g work out the mass of carbon dioxide released during the decomposition?

Description : Calcium carbonate decomposes into calcium oxide & carbon dioxide Her results:Mass of calcium carbonate before heating = 2.00 g Mass of calcium oxide left after heating = 1.12 g work out the mass of carbon dioxide released during the decomposition?

Last Answer : I am not sure of the answer so can someone help me pls

How many moles of carbon are in 3.5 moles of calcium carbonate?

Description : How many moles of carbon are in 3.5 moles of calcium carbonate?

Last Answer : The number of moles of calcium carbonate are 3.5 moles. , there are 1 mole of calcium (Ca) atom, 1 mole of carbon (C) atom and 3 moles of oxygen (O) atoms.

Match the following : A. Chernozems 1. Rich in calcium carbonate B. Black soil 2. Contains aluminium compound C. Laterite 3. Richest soils in the world D. Terra Rosa 4. Formed in limestone E. Alluvial soil 5. It is a mixture of clay, sand and silt A B C D E (a) 1 2 3 4 5 (b) 3 1 2 4 5 (c) 4 5 3 1 2 (d) 3 4 5 2 1

Description : Match the following : A. Chernozems 1. Rich in calcium carbonate B. Black soil 2. Contains aluminium compound C. Laterite 3. Richest soils in the world D. Terra Rosa 4. Formed in limestone E. Alluvial soil 5. It is a mixture of clay, sand and ... 1 2 3 4 5 (b) 3 1 2 4 5 (c) 4 5 3 1 2 (d) 3 4 5 2 1

Last Answer : Ans: (b)

The physiologically active form of calcium is (A) Protein bond (B) Ionised (C) Complexed with citrate (D) Complexed with carbonate

Description : The physiologically active form of calcium is (A) Protein bond (B) Ionised (C) Complexed with citrate (D) Complexed with carbonate

Last Answer : Answer : B

Consider the following statements: 1. Bordeaux mixture consists of sodium bromide and lime 2. Toothpastes contain calcium carbonate 3. Zinc amalgam is used in dental fillings 4. Liquid sodium is used as a coolant in nuclear reactors The correct statements are: (a) 1, 2 and 4 only (b) 1, 3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only

Description : Consider the following statements: 1. Bordeaux mixture consists of sodium bromide and lime 2. Toothpastes contain calcium carbonate 3. Zinc amalgam is used in dental fillings 4. Liquid sodium is used as a coolant in nuclear reactors The ... 1, 3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only

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)

Which one of the following mixtures is homogeneous? (1) Starch and sugar (2) Methanol and water (3) Graphite and charcoal (4) Calcium carbonate and calcium bicarbonate

Description : Which one of the following mixtures is homogeneous? (1) Starch and sugar (2) Methanol and water (3) Graphite and charcoal (4) Calcium carbonate and calcium bicarbonate

Last Answer : (2) Methanol and water Explanation: A homogeneous mixture is a solid, liquid, or gaseous mixture that has the same proportions of its components throughout any given sample.

Which of the following is primarily composed of calcium carbonate? (1) Fish scales (2) Shark teeth (3) Oyster Shes (4) Whale bones

Description : Which of the following is primarily composed of calcium carbonate? (1) Fish scales (2) Shark teeth (3) Oyster Shes (4) Whale bones

Last Answer : (3) Oyster Shes Explanation: There is a high content of calcium carbonate in mussel andoyster shells, which can be used in the formulation of medicine, in construction or as filler in polymer materials.

Hardness of the water is commonly measured in terms of - (1) Calcium carbonate equivalents (2) Calcium sulphate equivalents (3) Magnesium carbonate equivalents (4) Magnesium sulphate equivalents

Description : Hardness of the water is commonly measured in terms of - (1) Calcium carbonate equivalents (2) Calcium sulphate equivalents (3) Magnesium carbonate equivalents (4) Magnesium sulphate equivalents

Last Answer : (1) Calcium carbonate equivalents

Washing soda is the common name of- (1) Calcium Carbonate (2) Calcium Bi-Carbonate (3) Sodium Carbonate (4) Sodium Bi-Carbonate

Description : Washing soda is the common name of- (1) Calcium Carbonate (2) Calcium Bi-Carbonate (3) Sodium Carbonate (4) Sodium Bi-Carbonate

Last Answer : (3) Sodium Carbonate Explanation: Washing soda, sodium carbonate decahydrate, efflorescent crystals used for washing, especially textiles. It is a compound of sodium (q.v.).

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.

Glass is mainly composed of - (1) Sodium silicate (2) Calcium carbonate (3) Calcium hydroxide (4) Sodium bicarbonate

Description : Glass is mainly composed of - (1) Sodium silicate (2) Calcium carbonate (3) Calcium hydroxide (4) Sodium bicarbonate

Last Answer : (1) Sodium silicate Explanation: Glass is made from silica (SiO₂) and soda lime, which react to form sodium silicate.

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.

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).

Lime water turns milky when carbon dioxide is passed through it. It is due to the for mation of: (1) Calcium Carbonate (2) Barium Carbonate (3) Calcium Hydrogen Carbonate (4) Calcium Oxide

Description : Lime water turns milky when carbon dioxide is passed through it. It is due to the for mation of: (1) Calcium Carbonate (2) Barium Carbonate (3) Calcium Hydrogen Carbonate (4) Calcium Oxide

Last Answer : (1) Calcium Carbonate Explanation: When carbon dioxide is passed through lime water for a short time, it turns lime water milky due to formation of a white precipitate of calcium carbonate.