(a)
The element from group 1A or 2A that is an important constituent of remedy for acid indigestion has to be mentioned.
(b)
The element from group 1A or 2A that is an important constituent of coolant in nuclear reactors has to be mentioned.
(c)
The element from group 1A or 2A that is an important constituent of Epsom salt has to be mentioned.
(d)
The element from group 1A or 2A that is an important constituent of baking powder has to be mentioned.
(e)
The element from group 1A or 2A that is an important constituent of gun powder has to be mentioned.
(f)
The element from group 1A or 2A that is an important constituent of light alloy has to be mentioned.
(g)
The element from group 1A or 2A that is an important constituent of fertilizers that also neutralize acid rain has to be mentioned.
(h)
The element from group 1A or 2A that is an important constituent of cement has to be mentioned.
(i)
The element from group 1A or 2A that is an important constituent of grit for icy roads has to be mentioned.
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