Periodic TableShielding Effect and Orbital Penetration941Choose the best answerThe shielding ability of electrons in orbitals of the same shell decreases in the order:As > p > d > fBf > d > p > sCp > d > f > sDf > p > s > d Like 0 Discuss 0Share
Chemical BondingSigma and Pi Bonds942Choose the best answerWhich type of orbital forms σ bonds but not π bonds?Asp hybrid orbitalBdsp³ hybrid orbitalCs orbitalDAll of these Like 0 Discuss 0Share
Industrial ChemistryPermanent Hair Dyes943Choose the best answerIn a permanent hair dye formulation, resorcinol generally acts as a:AColorantBDeveloperCModifier or couplerDPolymerization initiator Like 0 Discuss 0Share
Fundamental Concepts of ChemistryPhysical Changes944Choose the best answerWhich of the following is a physical change?ARusting of ironBSouring of milkCDigestion of foodDSublimation of camphor Like 0 Discuss 0Share
Fundamental Concepts of ChemistryReversible Physical Changes945Choose the best answerWhich description best represents a reversible physical change?APermanent and reversibleBTemporary and irreversibleCTemporary and reversibleDPermanent and irreversible Like 4 Discuss 0Share