Author Topic: Exam MCQ solutions (Read 2879 times)

thushan · « **on:** November 10, 2015, 02:26:35 pm »

ACCAD DADDD ACACD BBCCA BDBAB CBDAB

Any mistakes - let me know!

mtse · « **Reply #1 on:** November 10, 2015, 02:33:56 pm »

I got the same for everything except the second last one.
Why is it D? I thought reduction occurs at the cathode and D is a oxidation half equation.

j0yce · « **Reply #2 on:** November 10, 2015, 02:40:32 pm »

Same. For the second last one i got A

paper-back · « **Reply #3 on:** November 10, 2015, 02:48:22 pm »

Why can't the answer be C for 21?
Is a secondary galvanic cell another term for an electrolytic cell?

Splash-Tackle-Flail · « **Reply #4 on:** November 10, 2015, 02:56:13 pm »

Why can't the answer be C for 21?
Is a secondary galvanic cell another term for an electrolytic cell?

I think it said "only" electrolysis or something (if we're thinking of the same Q)

yeahm8 · « **Reply #5 on:** November 10, 2015, 02:57:46 pm »

i also got A for 29

acinod · « **Reply #6 on:** November 10, 2015, 02:59:28 pm »

Agreed with all except 29 (beat me to it

)

I got the same for everything except the second last one.
Why is it D? I thought reduction occurs at the cathode and D is a oxidation half equation.

Wow I got D for 29 as well but I realised I was tricked because I thought cathode and electrode I were the same thing!
The answer should be A.

Why can't the answer be C for 21?
Is a secondary galvanic cell another term for an electrolytic cell?

21 cannot be C because the ratio of the change in concentrations is not correct.

Bruzzix · « **Reply #7 on:** November 10, 2015, 03:01:46 pm »

I had C for question 8?

Splash-Tackle-Flail · « **Reply #8 on:** November 10, 2015, 03:13:59 pm »

I had C for question 8?

Statement 1 is correct as hydrogen bonding is a type of dipole dipole

thushan · « **Reply #9 on:** November 10, 2015, 04:07:47 pm »

29 is A, whoops.

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