Chemical BondingSigma Bond Formation371Choose the best answerWhen two half-filled atomic orbitals overlap head-on along the internuclear axis, they form a:Aσ bondBHydrogen bondCπ bondDMetallic bond Like 0 Discuss 0Share
Basic Concepts of ChemistryPhysical and Chemical Changes372Choose the best answerBurning a matchstick is an example of a:APhysical changeBChemical changeCChange in pressureDChange in colour only Like 0 Discuss 0Share
MDCAT Chemistry Past PapersIBA MDCAT Chemistry Paper Reconduct 2024#Block Classification#S- and P-Block Elements373Choose the best answerWhich of the following does not belong to the S-block? (IBA MDCAT Reconduct 2024)ALiBCsCFeDBa Like 0 Discuss 0Share
StoichiometryLimiting Reagent374Choose the best answerThe reactant that is completely consumed first in a reaction is called the:ALimiting reactantBExcess reactantCLimiting productDExcess product Like 0 Discuss 0Share
GasesCharles's Law375Choose the best answerA gas occupies 300 mL at 27°C. What volume will it occupy at 7°C at constant pressure?A135 mLB540 mLC350 mLD280 mL Like 0 Discuss 0Share