START QUIZ #1. Quick lime has the formula CaO CaO Ca(OH)2 Ca(OH)2 NaOH NaOH Na2CO3 Na2CO3 #2. Which of the following substances is efflorescent? Na2CO Na2CO CaCO3 CaCO3 Na2CO3 . 10 H2O Na2CO3 . 10 H2O NaHCO3 NaHCO3 #3. Electrovalent compounds are also called non-polar compounds non-polar compounds polar compounds polar compounds chelate compounds chelate compounds ionic compounds ionic compounds #4. 'Hypo' is potassium nitrate potassium nitrate sodium thiosulphate sodium thiosulphate sodium nitrate sodium nitrate ammonium chloride ammonium chloride #5. The compound used in photography is ammonium dichromate ammonium dichromate magnesium sulphate magnesium sulphate sodium thiosulphate sodium thiosulphate copper sulphate copper sulphate Next Page >> < Results > - Congratulations. You passed the exam. Sorry You failed this exam. write the exam again.