CIE A Level Chemistry Solved Past Paper Oct/Nov 2020 P23

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This video provides solution to Paper 2 Variant 3 of Oct/Nov 2020.
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Hi, for question 2 a ii, what topic might give information about these? Would it be acids and bases? Everytime I encounter questions that requires observation of reactions, I get lost

jhhhwjv
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I have a question, in Q2.d.iii, can we say backward reaction is endothermic and still recieve a mark?

madhazel
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For question 2e, how do we consider period 3 elements if they have clearly stated that Element E is a period 5 element?

Ms_Kayzie
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In Q4 part 6 plz tell in detail how ixidation numbers re used to balance. What would be ixidation number for carbon then

aster
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hello, in Q4 part 6, how did you balance the equation?

maharashid
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Hello please may you explain on question 1biii) why nitrogen dioxide is acting as a catalyst?

amethyst_
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May I know 4 c iii is elimination reaction for halogenoalkane?

melonlin