You are in the kitchen. You have a party later today and want to make some straw

Question

You are in the kitchen. You have a party later today and want to make some strawberry gelatin. Your mom comes home from a long day at work and hands you two bottles. They both contain a clear, slightly viscous liquid. One has a label "A" on it and the other has a label "B" on it. Your mom says "One of these bottles contains a solution of purified collagen in water. The other contains glycerol and poison. I can't remember which is which. I need to go take a nap. I know you can figure out which is which though, honey. Don't drink the poison please."

Being a good chemist from birth, you look at this as another fun challenge. First, you pour the liquid from each bottle into separate beakers. Then you think about it for a few minutes and decide what to do. Of the following four choices, which is the most reasonable path for you, given your constraints?

Explanation / Answer

To distinguish between glycerol and gelatin we will boil both beakers with constant stirring. Then will cool it on ice (0-50C). The beaker with gelatin will get converted to gel while other will not. Hence reboil the content of that beaker with strawberry juice and sugar to get strawberry gelatin.

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