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Question

Identify the compounds among the following:

(a) Milk (b) Sodium (c) Calcium Carbonate (d) Methane

  1. Milk, Calcium carbonate
  2. Sodium
  3. Calcium carbonate, Methane
  4. None of the above

A
Milk, Calcium carbonate
B
None of the above
C
Calcium carbonate, Methane
D
Sodium
Solution
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Compounds is a pure substance made up of two or more elements combined chemically in a definite (or constant) proportion by mass.

Calcium carbonate is CaCO3, Methane is CH4 --- Compound.

Sodium ----- Element.

Milk ---------- Mixture.

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