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Addition

Give a test t...

Question

Give a test to distinguish butter and cooking oil?

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Solution

We can distinguish between cooking oil and butter by bromine water test:
Add bromine water to little of cooking oil and butter taken in different test tubes. Cooking oil decolourises bromine water showing that it is an unsaturated compound while butter doesn't decolourise bromine water showing that it is a saturated compound

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Give a test that can be used chemically to differentiate between butter and cooking oil.

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Give a test that can be used to differentiate chemically between butter and cooking oil.

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b / n

butter and cooking oil.

Q. Bromine water has a red-brown colour due to the presence of bromine in it. A student adds bromine water to a little of cooking oil and butter taken in separate test-tubes.
(a) What will the student observe when he adds bromine water to cooking oil? Give reason for your answer.
(b) What will the student observe when he adds bromine water to butter? Give reason for your answer.

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