1) Ositha My online class a) 10 b) 02 c) 43 d) 05 e) 80 f) 01 2) What is the Sinhala word for external sphere? a) තාප ගෝලය b) ස්ථර ගෝලය c) මධ්‍ය ගෝලය d) බාහිර ගෝලය e) පරිවර්තී ගෝලය 3) What is the unit by which air pressure is measured? a) ml b) l c) kg d) g e) mb f) cm 4) What is the percentage of the volume of oxygen in the air? a) 25% b) 23% c) 1110% d) 21% e) 34% f) 15% 5) What is the average temperature in Colombo? a) 35.6 b) 64.6 c) 1290.7 d) 27.4 e) 47.6 f) 12.5

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