Could someone help me out with this mcq?
June 2011/Unit 1
3 The European Union has set a limit (with effect from January 2010) of 3.13 ppm for the proportion of the toxic gas carbon monoxide in the air that we breathe. This is equivalent to
A 3.13%
B 0.0313%
C 0.000313%
D 0.00000313%
The answer's D but why?
3 The European Union has set a limit (with effect from January 2010) of 3.13 ppm for the proportion of the toxic gas carbon monoxide in the air that we breathe. This is equivalent to
A 3.13%
B 0.0313%
C 0.000313%
D 0.00000313%
The answer's D but why?
Original post by I-try
June 2011/Unit 1
3 The European Union has set a limit (with effect from January 2010) of 3.13 ppm for the proportion of the toxic gas carbon monoxide in the air that we breathe. This is equivalent to
A 3.13%
B 0.0313%
C 0.000313%
D 0.00000313%
The answer's D but why?
3 The European Union has set a limit (with effect from January 2010) of 3.13 ppm for the proportion of the toxic gas carbon monoxide in the air that we breathe. This is equivalent to
A 3.13%
B 0.0313%
C 0.000313%
D 0.00000313%
The answer's D but why?
The answer isn't D.
Hint: percent... per-cent
Hopefully you already know that ppm means parts per million. 1 million ppm= 100%
Therefore 1ppm = 0.0001%
I concur with alow, the answer is not D
Therefore 1ppm = 0.0001%
I concur with alow, the answer is not D
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