D. (OH) 31. When an alkali (base) dissolves in water, it gives ions.
b.(OH)
c.(OH)-2
32. All of these substances turn litmus paper into red except
a. HCI
C. NaOH
33. Mona bought a cup of yogurt and found the taste is sour, so she concluded the
contains a compound from
a. acids.
b. bases.
c. salts.
d. oxides.
b. HNO
d. H, SO
34. All of these substances turn litmus paper into blue except
4 NaOH
b. KOH
c. Ca(OH)2
d. HBr
35. All of the aqueous solutions of the following compounds have bitter taste except
a. sodium hydroxide.
b. sulphuric acid.
c. calcium hydroxide.
d. potassium hydroxide.​