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Organic Chemistry (342) - Inorganic Chemistry (123)
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Besides the extent of branching, can you think of any other structural parameters that might lead to differences in physical properties? : Polymer Chemistry
1368What kinds of structural changes accompany bond-breaking and bond-forming in olefin polymerization? : Polymer Chemistry
1880What are the other ways in which chemists can manipulate the properties of polymers? : Polymer Chemistry
1246How does the molecular-level structure of these polymers influence their physical properties? : Polymer Chemistry
1 2216Examine samples of ldpe (sandwich bag, squeeze bottle) and hdpe (milk jug, grocery bag). What are some of the differences in the physical properties of these substances? : Polymer Chemistry
1238A polymer's structure influences its physical properties. Describe two structural variations that are possible for polypropylene but not for polyethylene. : Polymer Chemistry
1151What are some of the polymers that you encounter every day? Describe their physical properties. : Polymer Chemistry
1189Atactic polypropylene is always produced with the [cp2zr(r)]+ catalyst. Explain this on the basis of molecular-level interactions. : Polymer Chemistry
1153What is the difference between a heterogeneous and a homogeneous catalyst? What are some of the advantages of homogeneous catalysts? : Polymer Chemistry
1072"Co-polymers" consist of two different monomers ("a" and "b") joined in an alternating fashion (ababab...). Block co-polymers also consist of two different monomers, but in this case blocks of polymer containing only a units are joined to blocks of polymer containing only b units (aaaaabbbbb...). How might block co-polymers be synthesized? : Polymer Chemistry
1168How an electrochemical is measured? Define emf of an electrochemical cell? : Electrochemistry Corrosion
1138What are the differences between chemical and electrochemical corrosion? : Electrochemistry Corrosion
1143
what is the syllabus for mahagenco recruitment drive for the post of chemist
what are the standard methods for HPLC?
In pickling process of titatium with HCL . how to know if the acid is not effective after pickling several batch. is there any test to know it. (not practically)
we shall use Dichloromethane in last stage of API.
Besides the extent of branching, can you think of any other structural parameters that might lead to differences in physical properties? : Polymer Chemistry
Which is the highly polar and highly non polar column in HPLC?
Why we check moisture,ash & AIA in product
How are ph and pka related?
What are constituents of brass?
In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?
What is the purpose of octyl silane columns?
what is turbidimetric titration?Give 2 examples.
what happens to the unit particles of a solute when it dissolves on a liquid?
what is partion and column chromatography
1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer
