१. वायुमण्डलमा रहेको ग्यासको आधारमा तलका जोडामिलनमा नमिल्ने जोडा कुन हो/हुन् ? a) Nitrogen -78.0841 b) Oxygen - 20.9486 c) Argon - 5.339 d) Co2 - 0.0318
- a & b
- b & c
- c
- d
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