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


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.