D. Reacts with baking soda to produce carbon dioxide.
Explanation:
The bases are the substances that are in the form of aqueous solution. These solutions liberates the hydroxide ions in water. They are slippery in touch, they are bitter in taste, they change color in the presence of indicators and react with acids so as to neutralize it.
The bases do not react with metals like acids do. The baking soda is a base which reacts with the acid to form carbon dioxide, salt and water. The base does not react with baking soda to form carbon dioxide.
Explanation:when elevator does not move it reads weight of the person . when elevator moves up let apparent weight be F . W acts downwards so net force is F-W
