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Examen

A Level Chemistry OCR A - PAPER 2 incorrect Questions & Answers
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14

abril 2025

2024/2025

A
Which compound is used as a standard for NMR chemical shift measurements? a) Si(CH₃)₄ b) CDCl₃ c) D₂O d)CCl₄ - ANSWERSa) Si(CH₃)₄ which compound doesn't react with nucleophiles? a) CH₃CH₂CHO b) CH₃CHCH₂ c) CH₃CH₂COCH₃ d)CH₃CH₂CH₂Cl - ANSWERSb) CH₃CHCH₂ which molecule is not planar? a) C₂H₄ b) C₂H₆ c) H₂CO d) HCN - ANSWERSb) C₂H₆ ethanol can be prepared by different reactions which reaction has the lowest atom economy?...
Bestgrades2
$16.29 Más información

Examen

A-Level Chemistry OCR-A Paper 2 - Synthesis and analytical techniques
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39

octubre 2022

2022/2023

A+
Predicted Paper 2022 Name ……………… Date ………………… 2 hours 15 minutes allowed You should spend a maximum of 20 minutes on section A. The Advanced Information from the exam board gives us a broad overview of what is covered in the exam. The information was given in ranked order, and this has been reflected in the mark allocation and topics on this paper. There are questions in this paper that cover topics that are not listed by the exam board. These are i...
esthermungai
$9.49 Más información