# Sodalime is:(a) NaOH(b) NaOH+CaO(c) CaO(d) $Na_{ 2 }CO_{ 3 }$

Verified
232.2k+ views
Hint: There is no direct formula of soda lime given in the options above. You have to break this word in Soda+lime, then think about the options having Soda and Lime in their formula. Now if you are able to capture this hint you can easily choose the correct option.

- In option B, a mixture of NaOH+CaO is given. This option is correct because soda lime is a granular solid produced by slaking quicklime (CaO) with a concentrated solution of sodium hydroxide, NaOH(aq). Slaking means the hydration of quick lime(CaO) to form $Ca(OH)_{ 2 }$.
- Option D, the compound is sodium carbonate. It is the inorganic compound with the formula $Na_{ 2 }CO_{ 3 }$ and its various hydrates. All forms are white, water-soluble salts. All forms have a strongly alkaline taste and give moderately alkaline solutions in water.