(Download) CBSE: Class X Science Question Paper - 2009 - (Delhi Region)
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CBSE: Class 10th Science Exam Paper 2009 (Delhi Region)
Subject: Science
Q.1. Fresh Milk has a pH of 6. When it changes into curd (yogurt) will its pH value increase or decrease? Why?.
Q.2. Name a reducing agent that may be used to obtain manganese from manganese dioxide.
(E-Book) CBSE Board Class 10th Papers PDF - SCIENCE