Statement 1: Lower aldehydes and ketones are soluble in water but the solubility decreases as the molecular mass increases.Statement 2: Reaction with HCN is used to distinguish  between aldehydes and ketones

Lower aldehydes and ketones are soluble in water due to polar effect of >C = O which makes hydrogen bonds with water molecules. As the size of the aldehydes and ketones increases the hydrophobic part, i.e., alkyl chain increases which weakens the H-bond formations with H2O molecules and decreases the solubility.