The suicide bombers targeted markets, cafes, cars, restaurants. More than 11 car bombs, roadside bombs, suicide bombs exploded outside cafes and other areas of the city which was largely populated by the civilians, officials said.
After the blasts, curfew was imposed in the Baghdad city and the citizen were directed not to leave their homes.
Earlier, in a bomb attack which was targeted at a police convoy, killed 3 policemen and an al-Qaeda militant. In another incident, a man was killed in Fallujah city, when the bomb blasted outside his home.
The attack comes just two days after 58 people were killed by the militants in a Catholic church in Baghdad.
Meanwhile, al-Qaeda in Iraq is threatening more attacks on Christians. "Christians are legitimate targets and that the killing sword will not be lifted from their necks," said a statement released by the militants.
The insurgent group are demanding the release of Muslim women in Egypt.