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On heating gypsum at 373K,it loses water molecules and become Plaster of Paris {POP} . USES=1. Doctors use it for supporting fractured bones . 2. For making toys, material for decoration .
What is pop and its uses?
Plaster of Paris is a building material that is used as a protective coating on walls and ceilings. Plaster of Paris is used to make sculptures and metal castings used as decorative in buildings. • It is also used in buildings to avoid fire hazards as Plaster of Paris is fire resistant.
What are the two uses of Pop?
- in surgery for setting broken or fractured bone.
- for making casts for statue.
- for making toys.
- in making board chalks.
- in construction industry.
What is pop in chemistry?
Persistent organic pollutants (POPs), sometimes known as “forever chemicals” are organic compounds that are resistant to environmental degradation through chemical, biological, and photolytic processes.
What is pop how it is prepared two uses of Pop?
(i) It is used in making chalks and fire proof materials. (ii) Used for making patient plasters used in surgery and for plastering fractured parts of the body. (iii) Mixed with alum, it is used as a cement in ornamental casting and for making moulds in pottery work.
Why pop is called plaster of Paris?
The name Plaster of Paris (POP) had its origins from the fact that it was extensively mined from Montmartre in Paris district. But its use predates the industrial revolution, they have been found on the insides of pyramids.
What are the two main properties of plaster of Paris?
PLASTER OF PARIS is non-flammable and non-combustible. Has generally low chemical reactivity but can act as an oxidizing agent under extreme conditions. Decomposes at high temperature to generate toxic oxides of sulfur. Reacts exothermically but slowly with moisture in the air or water to form gypsum CaSO4.
What is plaster of Paris Class 10?
Plaster of Paris is prepared by heating gypsum to a temperature of 373K. When gypsum is heated to a temperature of 373k ,It loses three-Fourths of its water of crystallisation and forms Plaster of Paris.
What is the full form of pop write its three uses?
Answer: The full form of “POP” is the Plaster of Paris. The chemical formula of POP is CaSO₄. 1/2H₂O which is Calcium Sulphate Hemihydrate. POP is formed by heating the gypsum at 100°C temperature.
Which is not property of plaster of Paris?
PLASTER OF PARIS is non-flammable and non-combustible. Has generally low chemical reactivity but can act as an oxidizing agent under extreme conditions. Decomposes at high temperature to generate toxic oxides of sulfur. Reacts exothermically but slowly with moisture in the air or water to form gypsum CaSO4.
Why caso4 1 2h2o is called plaster of Paris?
Answer. Because, Plaster of Paris (POP) is obtained by heating calcium sulphate hemi hydrate, also referred as gypsum for about 140-180 degree Celsius. The name Plaster of Paris (POP) is derived as the calcium sulphate hemi hydrates are found in large amount deposited in the Montmartre hill in Paris.
What is pop how it is prepared and write it uses?
Plaster of paris is prepared by heating calcium sulfate dihydrate, or gypsum, to 120–180 °C (248–356 °F). With an additive to retard the set, it is called wall, or hard wall, plaster, which can provide passive fire protection for interior surfaces.
What is the formula of pop?
Answer: The name plaster of Paris came from the fact that it was first of all made by heating gypsum which was mainly found in Paris. The compound plaster of Paris is prepared by heating gypsum at 120oC. The chemical formula for the plaster of Paris is (CaSO4) H2O and is better known as calcium sulfate hemihydrate.
What is the name of pop?
Thechemical name of plaster of Paris is calcium sulphate hemihydrate because half molecule of water is attached with calcium sulphate. Thechemical formula of plaster of Paris is is CaSO4. 1/2H2O.
How do you make pop?
Plaster of Paris is prepared by heating gypsum at 373 K. On heating, it loses water molecules and becomes calcium sulphate hemihydrate (CaSO4. 1/2 H2O) which is called Plaster of Paris.
What are the properties of Pop?
What are the characteristics of POP?
- Plaster of Paris is easy to spread and level.
- It is fire resistant highly.
- It forms a thick surface to resist normal knocks after drying.
- It expands very slightly on the setting.
- It does not cause cracking of surfaces. It gives a decorative interior finish. It mixes up easily with water.
What are the properties and uses of plaster of Paris?
Plaster of paris – definition It is a white powder. When mixed with water (1/3 of its mass), it evolves heat and quickly sets to a hard porous mass within 5 to 15 minutes. During setting, a slight expansion (about 1%) in volume occurs so that it fills the mould completely and takes a sharp impression.
How is pop prepared mention any 4 uses?
(1) p.o.p is used in making toys, decorative materials , cheap ornaments , cosmetics . black- board chalk and casts for statues . (2) p.o.p is used as a fire – proofing material . (3) p.o.p is used in chemistry laboratories for sealing air- gaps in appartous where air – tight arrangement is required .
What is the commercial name of pop?
Answer Expert Verified. ‘Plaster of Paris’ is the commercial name of calcium sulphate hemihydrate .
How is pop different from Gypsum?
Plaster of Paris is different from Gypsum in term of water of crystallization. Gypsom has 2 mole of water of crystallization where as Plaster of Paris has half mole of water of crystallization. Plaster of Paris is prepared from heating gypsum. CaSO4.
What is the full form what is the full form of pop?
The Full form of POP is Post Office Protocol. It is used as a protocol to retrieve e-mail from a mail server. Most e-mail applications (sometimes called an e-mail client) use the POP protocol, although some can use the newer IMAP (Internet Message Access Protocol). POP2 and POP3. Dec 6, 2018
What are the properties of gypsum?
| Physical Properties of Gypsum | |
|---|---|
| Chemical Classification | Sulfate |
| Color | Clear, colorless, white, gray, yellow, red, brown |
| Streak | White |
| Luster | Vitreous, silky, sugary |
