Fundamental Concepts of ChemistryChemical Changes746Choose the best answerWhich is an example of a chemical change?AMelting of iceBSwitching on a bulbCCutting fruit into piecesDRusting of iron Like 0 Discuss 0Share
SolidsStructure of Diamond747Choose the best answerIn diamond, each carbon atom is covalently bonded to four other carbon atoms at an angle of:A90°B109.5°C120°D180° Like 0 Discuss 0Share
SINDH MDCAT 2018 Chemistry#Macromolecules#Polymers748Choose the best answerThe transparent plastic used to make combs and hair brushes is called: (Sindh MDCAT 2018)APVABPVCCBakeliteDPerspex Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryAllotropes of Carbon749Choose the best answerWhich comparison is correct?ADiamond consists of weakly held layers.BGraphite has layers, whereas C₆₀ consists of cage-like molecules.CC₆₀ is an ionic solid.DGraphite contains only pentagonal rings. Like 0 Discuss 0Share
MDCAT Chemistry Past PapersIBA MDCAT Chemistry Paper Reconduct 2024#Energy and Work Units#Thermochemistry & Thermodynamics750Choose the best answerWhich has the same unit as work? (IBA MDCAT Reconduct 2024)AHeatBPowerCMoleDMass Like 0 Discuss 0Share