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Vocabulary - English Language
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FIRST USE OF ENGLISH
Writing - English Language
USE FUTURE STRUCTURES
Public Speaking - English Language
CAE SPEAKING
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Reading Comprehension - English Language
use of english for first
USE OF ENGLISH IN PRACTICE
Gap-fill
Matching
Writing meaning
Biology - Science
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WRITE YOUR ANSWERS HERE
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Research - English Language
IELTS Listening
IELTS reading
Chemistry - Science
Bimolecular Nucleophilic Substitution Rate. Involved two species (RX and Nu-). Rate = k[RX][Nu-] Second order reaction Reaction mechanism: One step. Methyl halide and primary haloalkane with less steric effect more reactive towards SN2.