BasicsStoichiometry #Mole Concept401Choose the best answerHow many moles of phosphorus atoms are present in 0.25 mol of P₄?A0.25 molB0.50 molC1.00 molD4.00 mol Like 0 Discuss 0Share
LiquidsAnomalous Behaviour of Water402Choose the best answerWater in a lake generally freezes:AFrom top to bottomBFrom bottom to topCUniformly throughoutDFirst at 4°C Like 0 Discuss 0Share
Industrial chemistry Industrial chemistry MCQS#Enzymes#Macromolecules403Choose the best answerWhich option contains the correctly matched pair?APepsin — basic mediumBTrypsin — acidic mediumCPepsin — acidic mediumDSalivary amylase — strongly acidic medium Like 0 Discuss 0Share
Chemical BondingSigma Bond Formation404Choose 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 Changes405Choose the best answerBurning a matchstick is an example of a:APhysical changeBChemical changeCChange in pressureDChange in colour only Like 0 Discuss 0Share