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Q.

Which of the following is used for metal cleaning and finishing ?

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a

CHCl3

b

CCl4

c

CH2Cl2

d

CHI3

answer is C.

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Detailed Solution

Dichloromethane CH2Cl2 is a colourless, volatile liquid with a sweet, chloroform-like odour that is commonly employed as a solvent. Despite not being miscible with water, it is polar and miscible with many organic solvents. It is used for metal cleaning and finishing.

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