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| 1. |
which of the following statement is incorrect? (A) All elements are homogenous. (B) Compounds always contain two or more different elements (C) A mixture is not always heterogeneous. (D) Air is a heterogeneous mixtur |
| Answer» which of the following statement is incorrect? (A) All elements are homogenous. (B) Compounds always contain two or more different elements (C) A mixture is not always heterogeneous. (D) Air is a heterogeneous mixtur | |