Multiple choice

Slaked lime mainly absorbs

  1. CO2

  2. NH3

  3. CO

  4. NO

  5. None of these

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This option is correct because slaked lime are stable at ordinary condition of use and storage, but readily absorbs carbon dioxide from air to form calcium carbonate. If it is heated to decomposition to form caustic fumes of CaO, calcium hydroxide is refined from limestone.