River contaminated by alkali waste will have a pH of abou...
River contaminated by alkali waste will have a pH of about.
1
3
5
7
9
Correct answer is E
No explanation has been provided for this answer.
A gas X diffuses twice as fast as gas Y. if the relative molecular mass of X is 32, calculate the re...
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The enzyme used in the hydrolysis of starch to dextrin and maltose is? ...
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