Previous Year Question Papers CBSE for Class 10

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Previous Year Question PaperCLASS-10
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Science 2015 CBSE Delhi

• Write the name and formula of the 2nd member of
  homologous series having general formula
  CnH2n2.(Set I)
• What is speciation?(Set II)
• Why should biodegradable and non-biodegradable
  wastes be discarded into two separate
  dustbins?(Set III)
• List four characteristics of the images formed by
  convex mirrors.(Set I)
• Every one of us can do something to reduce our
  personal consumption of various natural
  resources. List four such activities based on 3-R
  approach.(Set II)

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