NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Chemistry
- Chapter
- s Block Elements
NTA Abhyas 2020 · Chemistry · s Block Elements
Identify the correct statement
Identify the correct statement
Options
- AGypsum contains a lower percentage of calcium than plaster of paris
- BGypsum is obtained by heating plaster of paris
- CPlaster of paris can be obtained by hydration of gypsum
- DNone of these
Correct answer
A. Gypsum contains a lower percentage of calcium than plaster of paris
Step-by-step solution
Gypsum is 2 {CaSO}_{4} · 2 {H}_{2} \text{O}
Plaster of paris is {CaSO}_{4} · \dfrac{1}{2} {H}_{2} \text{O}
Hence, Gypsum contains a lower percentage of calcium than plaster of paris.
Plaster of paris is {CaSO}_{4} · \dfrac{1}{2} {H}_{2} \text{O}
Hence, Gypsum contains a lower percentage of calcium than plaster of paris.