Introduction to Acids,Bases

Q.

The common names of Cao and Ca(OH)_2 respectively are _____________ and ____________.

1. Quick lime and slaked lime

2. Slacked lime and quick lime

3. Calcium oxide and Calcium hydroxide

4. Calcium hydroxide and Calcium oxide

Q. Choose the incorrect statement about acids.

1. They are sour in taste.
2. They turn blue litmus paper red.
3. They give pink colour with phenolphthalein.
4. They give $H^{+}$ ions in water.