Belousov-Zhabotinsky (Oregonator)

Q1.BZ is famous as the first widely studied:

• A.Oscillating chemical reaction
• B.Chaotic electronic circuit
• C.Quantum chaos
• D.Population model

Q2.Belousov's original work was:

• A.Quickly accepted
• B.Rejected by Soviet journals as 'impossible' before Zhabotinsky reproduced it
• C.Done by a chemistry committee
• D.Done on a computer

Q3.The Field-Körös-Noyes (FKN) model captures BZ as:

• A.A 1-variable ODE
• B.An 11-step elementary reaction scheme
• C.A discrete map
• D.A random walk

Q4.The Oregonator is:

• A.A 3-variable reduction of FKN
• B.Population biology model
• C.A weather model
• D.An algorithm

Q5.BZ exhibits:

• A.Spirals and target patterns in unstirred 2D reactors
• B.Only pulsing colour change
• C.Linear waves
• D.No spatial structure

Q6.Chemical chaos in BZ is observed in:

• A.CSTR (continuously stirred tank reactor) experiments with appropriate flow rates
• B.Static beakers only
• C.Vacuum chambers
• D.Plasma

Q7.BZ is closely related to which other oscillating reaction model?

• A.Brusselator (Prigogine)
• B.Newton's cooling law
• C.Maxwell's demon
• D.Hamilton's equations

Q8.The bromate/ferroin BZ recipe is visible because:

• A.Ferroin changes red ↔ blue with redox cycle
• B.Bromine evaporates
• C.The reaction is exothermic
• D.It precipitates