IGCSE Chemistry 0620 Oct/Nov 2020 Paper 21 (Extended MCQ) | MCQ # 1 | Make Money Teaching Chemistry

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IGCSE Chemistry 0620 Oct/Nov 2020 Paper 21 (Extended MCQ)

MCQ # 1

1 Which gas has the slowest rate of diffusion?

A H2 B NH3 C CH4 D CO2

"D" is the correct option

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