CBSE Class 10 Science MCQs Chapter 4: Carbon and Its Compounds

Bonding in Carbon Compounds

• The electronic configuration of carbon that allows it to form 4 bonds in a compound is 1s² 2s² 2p².
• Carbon typically forms covalent bonds in its compounds.

Addition Reaction

• When chlorine is added to methane (CH₄) in the presence of sunlight, the likely product is chloromethane (CH₃Cl).

Hybridization in Carbon

• When carbon forms 3 sigma bonds and no lone pairs, its hybridization state is sp³.

Classification of Compounds

• CH₃Cl + HCl is classified as an organic compound.

Oxidation Reaction

• In the reaction involving ethanol, potassium dichromate, and sulfuric acid, potassium dichromate acts as an oxidizing agent.

Nomenclature of Carbon Compounds

• The characteristic that determines whether a carbon compound is named as an alkane, alkene, or alkyne is the presence of single, double, or triple bonds between carbon atoms.

Soap Molecules

• A soap molecule has one end that is ionic due to the presence of a negatively charged carboxyl group (-COO⁻) and a positively charged sodium ion (Na⁺).

Substitution Reaction

• When chlorine gas is added to a hydrocarbon in sunlight, chlorine substitutes hydrogen atoms due to the formation of a more stable chlorine-carbon bond.