Acid and base react with each other and form salt and water. What is this reaction called in scientific language?

For making cake,baking powder is used. If at home your mother uses baking soda instead of baking powder in the cake,
$(a)$ how will it affect the taste of the cake and why?
$(b)$ how can baking soda be converted into baking powder?
$(c)$ what is the role of tartaric acid added to baking soda?

How is bleaching powder prepared? Why does bleaching powder $(i)$ smell strongly of chlorine?

$(a)$ Identify the acid and the base whose combination forms the common salt that you use in your food. Write its formula and chemical name of this salt. Name the source from where it is obtained.
$(b)$ What is rock salt? Mention its colour and the reason due to which it has this colour.
$(c)$ What happens when electricity is passed through brine? Write the chemical equation for it.

Sodium hydrogencarbonate when added to acetic acid evolves a gas. Which of the following statements are true about the gas evolved?
$(i)$ It turns lime water milky
$(ii)$ It extinguishes a burning splinter
$(iii)$ It dissolves in a solution of sodium hydroxide
$(iv)$ It has a pungent odour

State the chemical property in each of the following cases,on which the following uses of baking soda are based:
$(a)$ Applied on an ant stung area.
$(b)$ As a constituent of baking powder.
$(c)$ In soda-acid fire extinguisher.