Three metal compounds, P, Q and R, are heated using a Bunsen burner. The results are shown.
P colourless gas produced, which relights a glowing splint
Q colourless gas produced, which turns limewater milky
R no reaction
Which row shows the identity of P, Q and R?
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24 Three metal compounds, P, Q and R, are heated using a Bunsen burner. The results are shown. P colourless gas ... Q colourless gas produced, which turns limewater milky. R no ...
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