Calcium phosphate is present in tooth enamel. Its nature is:

Write the chemical name and formula of the following:
$(a)$ Salt formed by the combination of a weak acid like carbonic acid and a strong base like sodium hydroxide.
$(b)$ Basic substance formed by the chlor-alkali process.
$(c)$ Substance added to cakes to make them fluffy.

Which of the following statements is correct about an aqueous solution of an acid and of a base?
$(i)$ Higher the $pH$,stronger the acid
$(ii)$ Higher the $pH$,weaker the acid
$(iii)$ Lower the $pH$,stronger the base
$(iv)$ Lower the $pH$,weaker the base

Write the chemical names of two salts belonging to the sodium family.

What is the $pH$ value for an acidic aqueous solution?

One of the constituents of baking powder is sodium hydrogencarbonate, the other constituent is