Which of the following substances consists of only one element?

  • A
    Marble
  • B
    Sand
  • C
    Diamond
  • D
    Glass

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Similar Questions

Name the appropriate method to separate a mixture of calcium sulfate and camphor.

The correct match between items $I$ and $II$ is
Item-$I$ (Mixture) Item-$II$ (Separation method)
$(a)$ $H_2O :$ Sugar $p.$ Sublimation
$(b)$ $H_2O :$ Aniline $q.$ Recrystallization
$(c)$ $H_2O :$ Toluene $r.$ Steam distillation
$s.$ Differential extraction

Two liquids $(A)$ and $(B)$ can be separated by the method of fractional distillation. The boiling point of liquid $(A)$ is less than the boiling point of liquid $(B)$. Which of the liquids do you expect to come out first in the distillate? Explain.

Percentage of lead in lead pencil is

What type of mixture is an alloy? Explain.

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