Fundamental Concepts of ChemistryChemical Changes786Choose the best answerWhich is an example of a chemical change?ABoiling of waterBBurning of paperCEvaporation of waterDMelting of ice Like 0 Discuss 0Share
Atomic StructureIsoelectronic Species787Choose the best answerAmong the following, identify the isoelectronic species:ACO, CN⁻, NO⁺, C₂²⁻BCO⁻, CN, NO, C₂⁻CCO⁺, CN⁺, NO⁻, C₂DCO, CN, NO, C₂ Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryNomenclature of Polyhydric Phenols788Choose the best answerThe IUPAC name of catechol is:ABenzene-1,2-diolBBenzene-1,3-diolCBenzene-1,4-diolDBenzene-1,2,3-triol Like 0 Discuss 0Share
Periodic TableAtomic Radius Trend789Choose the best answerThe correct decreasing order of atomic radii in Period 3 is:ACl > S > P > SiBSi > P > S > ClCP > Si > Cl > SDSi > S > P > Cl Like 0 Discuss 0Share
MDCAT Chemistry Paper 2025#Chemical Bonding#Sigma and Pi Bonds790Choose the best answerNumber of σ bonds in methyl chloride is due to sp³-s overlap is/are: (IBA MDCAT 2025)A1B2C3D4 Like 1 Discuss 0Share