Amongest the following, the total number of compound soluble in aqueous `NaOH` is :
.

Amongst the following, the total number of compounds soluble in aqueous NaOH is

Among the following, the total number of compound soluble in aqueous NaOH is : .

Among the following, the total number of compound soluble in aqueous NaOH is : .

Amongst the following, the number of compounds soluble in aqueous NaOH is ? ,

Amongst the following, the number of compounds soluble in aqueous NaOH is ? ,

Amongst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is: