Advertisements
Advertisements
प्रश्न
Plaster of Paris should be stored in a moisture-proof container. Explain why?
Explain why plaster of Paris should be stored in a moisture-proof container.
Advertisements
उत्तर
The Plaster of Paris should be stored in a moisture-proof container, as it absorbs moisture and turns into a hard substance (gypsum), as shown in the following chemical equation.
\[\ce{\underset{Plaster of Paris}{CaSO4 * 1/2 H2O} + 3/2 H2O -> \underset{Gypsum}{CaSO4 * 2H2O}}\]
संबंधित प्रश्न
Name the product obtained when Plaster of Paris is mixed with water. State the use of the product. Give two uses of POP.
Write an equation to show the reaction between plaster of Paris and water.
What will happen if heating is not controlled while preparing plaster of Paris?
Name the raw material used for the preparation of plaster of Paris.
What is plaster of Paris?
A compound X which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water.
- Identify the compound X.
- Write the chemical equation for its preparation.
- For what purpose is it used in hospitals?
A compound X which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water.
Write the chemical equation for its preparation
A white chemical compound becomes hard on mixing with proper quantity of water. It is also used in surgery to maintain joints in a fixed position. Name the chemical compound.
How many molecules of water of crystallisation (per formula unit) are present in:
Gypsum
The chemical formula for plaster of Paris is:
At what temperature is gypsum heated to form Plaster of Paris?
Calcium sulphate hemihydrate is called as ______.
Match the Following:
| 1. | Antiseptic | a. | Plaster of paris |
| 2. | Making casts for statues | b. | Phenol |
| 3. | Ease stress and relaxes | c. | Gypsum |
| 4. | Fertilizers | d. | Epsum |
Analogy:
Blackboard chalks: ______:: Plant growth: Epsum.
Analogy:
______: Calcium Sulphate Dihydrate:: Plaster of Paris: Calcium Sulphate Hemihvdrate.
A compound which is prepared from gypsum has the property of hardening when mixed with water. identify the compound and write its formula. How is this compound prepared? Describe it in the form of a chemical equation only.
