Tag: symbol of helium
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Previous paper class 7th(Science)
Q No. 2: Written Questions. 1) What is ulcer? /5 2) What is law of constant composition? /5 3) Define alveoli. /3 4) Comparison between inspiration and expiration. /8
Q No. 2: Written Questions. 1) What is ulcer? /5 2) What is law of constant composition? /5 3) Define alveoli. /3 4) Comparison between inspiration and expiration. /8