StoichiometryMole Concept and Number of Atoms1506Choose the best answerWhich sample contains the same number of atoms as 20 g Ca?A16 g SB32 g OC39 g KD48 g Mg Like 0 Discuss 0Share
Industrial ChemistryCopolymers1507Choose the best answerWhich of the following represents a copolymer?APVC formed from vinyl chlorideBA polymer formed from vinyl acetate and butyl maleateCA polymer formed from three different monomersDPolyethylene formed from ethene Like 0 Discuss 0Share
Sindh MDCAT 2020 Chemistry#Magnetic Properties#Transition Elements1508Choose the best answerAmong the following 3d-series ions, which has the greatest number of unpaired electrons?ACr³⁺BTi³⁺CV³⁺DZn²⁺ Like 0 Discuss 0Share
LiquidsLatent Heat of Condensation1509Choose the best answerWhich causes a more severe burn at the same contact conditions?AWater at 20°CBWater at 80°CCWater at 100°CDSteam at 100°C Like 0 Discuss 0Share
Carboxylic AcidsPreparation of Acid Anhydrides1510Choose the best answerTwo moles of acetic acid heated with P₂O₅ produce:AEthanolBFormic anhydrideCAcetic anhydrideDAcetonitrile Like 0 Discuss 0Share