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A pair of compound that can be use to generate a gas which has physiological...

A pair of compound that can be use to generate a gas which has physiological effect on human beings is
A)sodium trioxonitrate(v) and calcium chloride
B)sodium dioxonitrate(iii) and ammonium chloride
C)sodium trioxonitrate(v) and ammonium chloride
D)sodium dioxonitrate(iii) and potassium chloride

Please kindly prove your answer because this questions is very confusing to me.?

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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free