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FIRST SUMMATIVE EVALUATION CLASS 9 (IX) WBBSE PHYSICAL SCIENCE QUESTION PAPER Set-4 āĻ¨āĻŦāĻŽ āĻļā§āĻ°ā§āĻŖāĻŋāĻ° āĻā§āĻ¤ āĻŦāĻŋāĻā§āĻāĻžāĻ¨ āĻĒā§āĻ°āĻĨāĻŽ āĻāĻāĻ¨āĻŋāĻ …