Q.

Is it true that bromine water test is used to differentiate between butter and cooking oil?


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a

True

b

False  

answer is A.

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Detailed Solution

The above statement is true.
If a carbon compound decolourises bromine water, then it is an unsaturated compound. So, a bromine water test can be used to distinguish between cooking oil and butter. The bromine water will get decolourised by cooking oil. This shows that cooking oil is an unsaturated compound. The bromine water does not get decolourised by butter. This shows that butter is a saturated compound.
 
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