Balloons are filled with

A. hellium

B. oxygen
C. nitrogen
D. argon

Occurrence: PPSC - HEALTH EDUCATOR (BS 17) - PUNJAB DEPARTMENT - 2014

Balloons are filled with | hellium | CSS, PMS, PPSC, FPSC, KPPSC, SPSC, ISSB and NTS Past Papers | Pakistan's Largest Online Past Papers Database

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