CH3CHO is an aldehyde, characterized by the -CHO functional group.

C4H10 is an alkane, which is a saturated hydrocarbon with single bonds only.

Alkenes are hydrocarbons that contain at least one carbon-carbon double bond. C2H4 (ethylene) is an alkene.

Benzene is a classic example of an aromatic compound due to its cyclic structure and delocalized pi electrons.

Benzene is an aromatic hydrocarbon characterized by its stable ring structure and delocalized electrons.

Cis-2-butene has different spatial arrangements of groups around the double bond, making it a geometric isomer.

C4H10 can exist as butane and isobutane, which are structural isomers.

2-Butanol is an isomer of butanol, differing in the position of the hydroxyl group.

C2H4 (ethylene) is an unsaturated hydrocarbon as it contains a double bond.

Benzene is an aromatic compound due to its cyclic structure and delocalized pi electrons.

Sodium benzoate is widely used as a food preservative to inhibit the growth of bacteria and fungi.

Sodium benzoate is widely used as a food preservative to prevent spoilage.

Aspartame is a widely used artificial sweetener found in many low-calorie foods and beverages.

H2O is a covalent compound formed by the sharing of electrons between hydrogen and oxygen atoms.

SiO2 is formed from Silicon, which is a p-block element.

NaCl is formed by sodium, which is an s-block element.

Sodium reacts with water to form sodium hydroxide (NaOH) and hydrogen gas.

Phenol is less acidic compared to the other acids listed due to the +M effect of the aromatic ring, which destabilizes the negative charge on the phenoxide ion.

CCl3COOH is most acidic due to the strong -I effect of the -CCl3 group.

Benzaldehyde is most affected by the mesomeric effect due to the presence of the carbonyl group which can participate in resonance.

Benzene is highly stabilized by resonance due to its delocalized pi electrons.

Phenol is not classified as an alcohol because it has an aromatic ring, while the others are aliphatic alcohols.

Cyclooctatetraene is not aromatic because it does not satisfy Huckel's rule and does not have a planar structure.

Cyclooctatetraene is not aromatic because it does not satisfy Huckel's rule; it is non-planar and does not have a continuous ring of p orbitals.

HCl is a polar molecule due to the difference in electronegativity between hydrogen and chlorine.

Chlorofluorocarbons (CFCs) are known to deplete the ozone layer by breaking down ozone molecules in the stratosphere.

Phenol is stabilized by the +M effect due to the presence of the -OH group which donates electron density.

Propyne is the most acidic due to the sp hybridization of the carbon atom involved in the triple bond.

Iron is used as a catalyst in the Haber process for the synthesis of ammonia from nitrogen and hydrogen.

Calcium chloride (CaCl2) is commonly used as a drying agent due to its hygroscopic nature.