32. The analysis of fatty acids by gas chromatograph usually involves (A) to combust them to CO2 (B) to reduce them to corresponding hydrocarbons (C) to convert them into their trimethylsilyl esters (D) to convert them into their methyl esters (E) to pyrolyze them

10. Polystyrene is an addition polymer of styrene. What would be the effect if some divinylbenzene were added to styrene and then polymerized? (A) The second polymer would be made less flammable than pure polystyrene. (B) The polymer would be more flexible. Divinylbenzene acts as a plasticizer. (C) Divinylbenzene would act as a cross-linking agent, making the polymer stronger. (D) There would be no effect on the properties of the polymer. (E) There would be an effect, but it cannot be predicted.

32. The analysis of fatty acids by gas chromatograph usually involves
(A) to combust them to CO₂
(B) to reduce them to corresponding hydrocarbons
(C) to convert them into their trimethylsilyl esters
(D) to convert them into their methyl esters
(E) to pyrolyze them

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