This is with regard to time management and how extensive you need to answer your questions.
Elucidation Questions:
1) Most importantly you must give proper deduction of FG and reaction linked to observation:
eg A reacts wtih 2,4, dinitrophenylhydrazine to form hydrazone--> A has carbonyl group.
These are most important, since without proper deductions you may make mistakes in structures.
2) Give structures and label: these will be 1 mark per structure.
Normally for 10 marks, elucidating 4-6 structures plus all deductions will give full marks.
3) equations?: give these only if the question demands for them. IE the question states:" give equations for ALL reactions that take place"
If question implies that equations are optional: for eg, "deduce structures, and use eqns where appropriate", it means that the equations are used in place of deductions, so they share the same marks. IE if you are able to give full and complete deductions, equations become redundant and do not score more credit.
In these cases, I recommend especially when you are short of time not to write equations; simply do a good job with observations->deductions and structures and you will score.
But if you've got time, write the equations to secure 100% marks.
During tutorials I always demand a higher standard(120%) in order to train you up, and you need the practice to ground your foundation. But during exam, learn to discern good time management.
remember: 1 mark => 1.5 minutes. you may need to be faster than this for organic chem, because for stoichiometry, 1 mark may take a long time (calculations etc) to obtain.
That's it for now.
Elucidation Questions:
1) Most importantly you must give proper deduction of FG and reaction linked to observation:
eg A reacts wtih 2,4, dinitrophenylhydrazine to form hydrazone--> A has carbonyl group.
These are most important, since without proper deductions you may make mistakes in structures.
2) Give structures and label: these will be 1 mark per structure.
Normally for 10 marks, elucidating 4-6 structures plus all deductions will give full marks.
3) equations?: give these only if the question demands for them. IE the question states:" give equations for ALL reactions that take place"
If question implies that equations are optional: for eg, "deduce structures, and use eqns where appropriate", it means that the equations are used in place of deductions, so they share the same marks. IE if you are able to give full and complete deductions, equations become redundant and do not score more credit.
In these cases, I recommend especially when you are short of time not to write equations; simply do a good job with observations->deductions and structures and you will score.
But if you've got time, write the equations to secure 100% marks.
During tutorials I always demand a higher standard(120%) in order to train you up, and you need the practice to ground your foundation. But during exam, learn to discern good time management.
remember: 1 mark => 1.5 minutes. you may need to be faster than this for organic chem, because for stoichiometry, 1 mark may take a long time (calculations etc) to obtain.
That's it for now.
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