GENERAL KNOWLEDGE

GK

CHEMISTRY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Suppose you have a glass of unknown liquid that you want to identify. It looks like milk, but you cannot be sure. How could it be determined?

A	taste the unknown liquid
B	smell the unknown liquid
C	guess the unknown liquid
D	none of the above

Explanation:

Detailed explanation-1: -In a clean, dry test tube, combine 20 drops of your unknown with 20 drops of ethyl alcohol. If your unknown is soluble in ethyl alcohol, the two liquids should completely mix. If you unknown is insoluble in ethyl alcohol, you should be able to see two layers (the unmixed liquids) in the test tube.

Detailed explanation-2: -If the boiling point and freezing point of the given liquid comes out to be 100℃ or 373K and 0℃ or 273K respectively under 1 atm pressure, it confirms that the given liquid is pure water.

Detailed explanation-3: -Unknown Liquid: The unknown liquid can be identified by doing three test which are density, solubility and boiling point. Density of liquid is 0/ml, it is soluble in water and ethanol.

Detailed explanation-4: -Gas Chromatography (GC) Gas Chromatography Mass Spectroscopy (GC-MS) Ion Chromatography (IC) High Performance Liquid Chromatography (HPLC) Dispersive Raman Spectroscopy. Fourier Transfer Infrared Spectroscopy (FTIR) More items

There is 1 question to complete.