Triclosan is one of the most widely used antimicrobialagents in household products. It is:(a) A detergent(b) A phenolbased compound(c) An oxidizing agent(d) A halogen(e) An alkylating agent
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Triclosan is one of the most widely used antimicrobial
agents in household products. It is:
(a) A detergent
(b) A phenolbased compound
(c) An oxidizing agent
(d) A halogen
(e) An alkylating agent
Step by step
Solved in 2 steps
- The authors have used a chiral HPLC column (separating phase) to analyze compounds 4 and 5. Briefly describe a) the way a chiral HPLC column works to separate natural products of the Actinopyrone family and b) briefly comment on the general applicability of chiral HPLC columns in natural products research.The components of poison ivy and poison oak that produce the characteristic itchy rash are catechols substituted with long-chain alkylgroups. If you were exposed to poison ivy, which of the treatments below would you apply to the affected area? Justify your choice.(a) Wash the area with cold water.(b) Wash the area with dilute vinegar or lemon juice.(c) Wash the area with soap and water.(d) Wash the area with soap, water, and baking soda (sodium bicarbonate).7. The stabilized ether contains a stadilizer-antioxidant:A) Methyl alcohol in a concentration of not more than 0.1%B) Para-phenylenediamineC) Resorcinol not less than 0.1%D) Thymol not less than 0.1%
- Scott test is one of the methods used for screening for Cocaine in Forensic Chemistry. The multi step method consists of a) reacting the sample drug with cobaltous thiocyanate (Co(SCN)2) b) dissolving of the formed precipitate by adding HCl and c) extraction of coordination compound with Chloroform d) measurement of absorbance of extracted coordination compound at 627 nm What is the type of chemical equilibria involved in first step of the method? a.Solubility Product equilibria b.Bronsted Lowry acid – Bronsted Lowry base equilibria c.Complex ion formation d.Coordination compound formationHeat-sensitive materials (rubber and plastic) and bulkymaterials (mattresses) can be sterilized using:(a) Dry heat(b) Autoclaving(c) UV radiation(d) Gaseous ethylene oxide(e) None of theseFrom the SDS for 4-nitrobenzaldehyde, what does the Hazard Code H317 refer to? 1) Skin sensitisation (Category 1) 2) Explosive; mass explosive hazard 3) Contains gas under pressure; may explode if heated O 4) May cause drowsiness or dizziness
- Justify and explain following statements. (a) Paper chromatography is a type of partition chromatography. (b) The R f value is 1. (c) Chromatography is only a qualtitative technique. (d) The adsorbent should be insoluble in the solvent. (e) Chromatography is used to separate only color compounds.The image shows a whole body bone scan using MDP (mono-diphosphonate) labelled with technetium-99m. Patient is injected with 600 MBq of Tc-99 MDP Technetium-99m is a pure gamma emitter, with physical half-life of 6 hours. a) Use the data to explain why technetium 99-m is a suitable radionuclide (AC 3.1) ● b) What other information would you need to assess the suitability of Technetium-99m as a radioactive tracer. (AC 3.1) Prompt questionsWhich of the following statements about AAS and AES is FALSE a)Sample used in AAS are usually in the form of aqueous solution b)In flame AAS, the flame is used for atomization as well as excitation purpose c)The graphite furnace is an example of non-flame atomizer d)In flame AES, no light source is required. What is the advantages of Axial torch configuration over Radial configuration in Inductive Couple Plasma-Optical Emission Spectrometer (ICP-OES) a)Increased radiation intensity – a longer path length b)Excellent tolerance to dissolve solids c)Can analyze S, P, and Halogens d)Excellent torch lifetimes
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