Question

Which of the following substance can be used for drying gases.

• A. $\mathrm { CaCO } _ { 3 }$
• B. $\mathrm { Na } _ { 2 } \mathrm { CO } _ { 3 }$
• C. $\mathrm { NaHCO } _ { 3 }$
• D. CaO

Answer 1

Answer: (D)

CaO

Answer 2

$\mathrm { CaO } \rightarrow$ It is hygroscopic in nature