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Test

MO16 Redox

Mer Scott 11 preguntas

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Preguntas del test (11)

  1. 1In drug formulation and in vivo there is usually an oxygen radical that is involved in or initiates oxidation.
    1. AVerdadero
    2. BFalso
  2. 2Choose the incorrect statement.
    1. AHeat and light accelerate free radical formation.
    2. BAfter the first radical forms it quickly reacts e.g. with the drug and new radicals form (propagation) until the reaction is terminated.
    3. CStoring drugs at cold temperatures slows free radical formation compared to room temperature storage.
  3. 3Cytochrome P450 enzyme pathways involve ROS (reactive oxygen species) as natural byproducts.
    1. AVerdadero
    2. BFalso
  4. 4Choose the incorrect statement.
    1. AAlkenes can be oxidised to epoxides.
    2. BAlkenes in ring systems can be oxidised to diols.
    3. CPolyunsaturated fatty acids used in formulations are prone to oxidative cleavage.
    4. DThiols can be oxidised to form disulfide bridges.
    5. EThioethers are prone to oxidation and form sulfones then sulfoxides.
  5. 5Which of these is not a group formed by aromatic ring oxidation?
    1. AEpoxide
    2. BKetone
    3. CPhenol
    4. DPhenyl
  6. 6What is often the reductant in organic chemistry?
    1. AHydride ion (H)
    2. BHydroxide ion (OH-)
  7. 7Drug instability in formulations and storage due to reduction of the drug is common.
    1. AVerdadero
    2. BFalso
  8. 8Which of these functional groups is NOT prone to reduction?
    1. AAldehydes
    2. BKetones
    3. CCarboxylic acids
    4. DAzos
    5. ENitros
    6. FDisulfides
    7. GPhenols
  9. 9Choose the incorrect statement about photolysis.
    1. AAromatic rings and conjugated systems are prone because they can absorb higher wavelengths of light
    2. BIt is exposure to electromagnetic radiation that may result in complex chemical reactions hence decompositions of drugs
    3. CIt involves free radical formation and oxidation
  10. 10Folic acid is an example of a drug that is prone to photodegradation.
    1. AVerdadero
    2. BFalso

Información

Descripción
(Molecules) PHCY211 Test sobre MO16 Redox, creado por Mer Scott el 13/04/2018.
Idioma
English
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