How many water molecules are present in the given figure?

Identify the physical and chemical processes from the following:
$I - Ba(OH)_2 + H_2SO_4 \rightarrow BaSO_4 + 2H_2O$
$II -$ Ice $\rightarrow$ Water
$III -$ Water $\rightarrow$ Steam
$IV -$ Starch $\rightarrow$ Glucose
Which of these represent physical processes and chemical processes respectively?

Match the following columns:

Column $I$	Column $II$
$(A)$ $NAD$	$(i)$ Nicotinamide Adenine Dinucleotide Phosphate
$(B)$ $NADP$	$(ii)$ Flavin Mononucleotide
$(C)$ $FAD$	$(iii)$ Nicotinamide Adenine Dinucleotide
$(D)$ $FMN$	$(iv)$ Flavin Adenine Dinucleotide

Which of the following statements is $NOT$ true regarding biomolecules?

$A$: Dextrins are intermediate polysaccharides formed during the hydrolysis of starch into sugar.
$R$: Ascorbic acid is a sugar derivative.

Which one of the following is the energy currency of the cell,or the common immediate source of energy in cellular activity?