A) In this experiment, it is important that the benzaldehyde used should be pure. Benzaldehyde is easily oxidized by air and produces a white crystalline material. What is the name of this oxidation product?
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B) What safety precautions should you take when working with sodium hydroxide solutions?

quartz

explanation:

well in order to answer this question you have to provide more information < 3

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.