(Download) CBSE: Class X Science Question Paper - 2011 - (Delhi Region)
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CBSE: Class 10th Science Exam Paper 2011 (Delhi Region)
Subject: Science
Q.1. What is meant by biological magnification.
Q.2. Give an example of a phenomenon where Tyndall effect can be observed.
(E-Book) CBSE Board Class 10th Papers PDF - SCIENCE