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Author Topic: p1 chemistry, q-21 june 2000  (Read 917 times)

Offline mr_scholes

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p1 chemistry, q-21 june 2000
« on: June 11, 2009, 03:58:28 pm »
What's the answer for p1 chemistry june 2000 q 21??????
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Re: p1 chemistry, q-21 june 2000
« Reply #1 on: June 11, 2009, 04:00:43 pm »
Quote from: mr_scholes on June 11, 2009, 03:58:28 pm
What's the answer for p1 chemistry june 2000 q 21??????
A, aluminium forms white, iron forms green or brown, and although not in course, chromium forms green too.
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Offline mr_scholes

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Re: p1 chemistry, q-21 june 2000
« Reply #2 on: June 11, 2009, 04:15:41 pm »
Quote from: i-insane on June 11, 2009, 04:00:43 pm
Quote from: mr_scholes on June 11, 2009, 03:58:28 pm
What's the answer for p1 chemistry june 2000 q 21??????
A, aluminium forms white, iron forms green or brown, and although not in course, chromium forms green too.


could u please copy the question and the options because mine isn't very clear
By the way why is q30 A??
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Offline Ghost Of Highbury

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Re: p1 chemistry, q-21 june 2000
« Reply #3 on: June 11, 2009, 05:00:54 pm »
it has to be "C"
as SO2 plus H2O gives sulphuric acid
the pH of an acid is below 7 and turns blue litmus paper red
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