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(Download) CBSE: Class X Science Question Paper - 2009 - (Outside Delhi Region)

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CBSE: Class 10th Science Exam Paper 2009 (Outside Delhi Region)

Subject: Science

Q. 1. In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode?

Q. 2. What effect does an increase in concentration of H (aq.) in a solution have on the pH of solution?



NEW!  CBSE Papers PDF: Class-X, Class-XII