Consider the following chemicals 1. Benzene 2. Carbon tetrachloride 3. – McqOptions

MCQOPTIONS

1.	Consider the following chemicals 1. Benzene 2. Carbon tetrachloride 3. Sodium carbonate 4. Trichloroethylene Which of the above is/are used/used as dry cleaning chemicals?
A.	only 1
B.	only 2
C.	1,2 and 4
D.	all these
Answer» D. all these

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