1.

Classify the following as physical or chemical properties. (a) The composition of a sample of steel is : 98% iron, 1.5% carbon and 0.5% other elements. (b) Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas. (c) Metallic sodium is soft enough to be cut with a knife. (d) Most metal oxidesform alkalis on interacting with water.

Answer»

SOLUTION :(a) PHYSICAL (B) CHEMICAL (C ) Physical(d) Chemical.


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