[" If "CH_(2)D-CHO" is treated with dilute alkaline solution,how many different aldols (excluding "],[" stereoisomers) expected? "]

If CH_(2)D-CHO is treated with dilute alkaline solution how many different aldols (excluding steroisomers) are expected ?

How many different stereoisomers exist for the compound below?

How many different products (excluding stereoisomer) can be obtained by following reaction

How many differen products (excluding stereoisomer) can be obtained by following reaction?

How many isomers of C_(4)H_(10)O reacts with Na metal to evolve H_2 gas ? (excluding stereoisomer)

For the given question (1, 2, 3), consider the following reaction. monohalogenation product How many monohalo derivatives are possible (excluding stereoisomers) ?