Option 1: Na2CO3 - This is not the chemical name of baking soda. Na2CO3 is actually the chemical name for sodium carbonate, which is a different compound.
Option 2: Nal-ICOj - This is the correct chemical name of baking soda. It stands for sodium bicarbonate, which is the compound commonly known as baking soda. It is a white crystalline powder that is often used in baking as a leavening agent.
Option 3: CaCOj - This is not the chemical name of baking soda. CaCO3 is actually the chemical name for calcium carbonate, which is a different compound often used as a dietary supplement or antacid.
Option 4: NaOH - This is not the chemical name of baking soda. NaOH is actually the chemical name for sodium hydroxide, also known as lye or caustic soda. It is a highly alkaline substance and is often used in cleaning products or as a drain cleaner.
Therefore, the correct answer is option 2: Nal-ICOj.