Aldehydes and KetonesCannizzaro Reaction311Choose the best answerWhich of the following undergo the Cannizzaro reaction? (1) Methanal (2) 2-Methylpentanal (3) Benzaldehyde (4) BenzophenoneA(1) onlyB(2) onlyC(1) and (3)D(1), (2) and (3) Like 0 Discuss 0Share
StoichiometryRelative Atomic Mass and Atomic Mass Unit312Choose the best answerOne atom of an element has a mass of 10.86 × 10⁻²⁶ kg. Which element is it most likely to be?ABoron, Ar = 11BCalcium, Ar = 40CSilver, Ar = 108DZinc, Ar = 65.4 Like 0 Discuss 0Share
Chemical KineticsEffect of Catalyst on Activation Energy313Choose the best answerA reaction is catalysed by X. The primary kinetic effect of X is that it:ADecreases the rate constantBIncreases the equilibrium constantCDecreases the enthalpy changeDLowers the activation energy Like 0 Discuss 0Share
StoichiometryMass–Mole Conversion314Choose the best answerHow many moles of Na are present in 0.1 g Na?A4.3 × 10⁻³ molB4.01 × 10⁻² molC4.03 × 10⁻¹ molD4.3 × 10⁻² mol Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms315Choose the best answerHow many chlorine atoms are present in 2 mol Cl₂?A2 × 6.02 × 10²³ atomsB35.5 × 6.02 × 10²³ atomsC2 × 10²³ atomsD4 × 6.02 × 10²³ atoms Like 0 Discuss 0Share