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Is Matter Around Us Pure — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure4 Marks
Question
In the given below activity, on heating the solution, water evaporates, and we get back the ink dye in the watch glass. The different substance has a different boiling point. We use this property to separate the components of the mixture. Here, the boiling point of ink is much higher than that of water. On heating the ink solution, water evaporates while ink dye remains in the china dish.
$(i)$ Name the process shown in the diagram.
$(a)$ Boiling $(b)$ Filtration $(c)$ Crystallisation $(d)$ Distillation
$(ii)$ Which type of substance can be separated by this method ?
$(a)$ Any solvent from its non-volatile solute.
$(b)$ The volatile solvent from its non-volatile solute.
$(c)$ The non-volatile solvent from its non-volatile solute.
$(d)$ The volatile solvent from its volatile solute.
$(iii)$ What can we interpret about the nature of ink ?
$(a)$ We cannot separate components of ink $(b)$ Ink is not a mixture
$(c)$ Ink is pure substance $(d)$ Ink is a mixture of dyes in water.
$(iv)$ Name the component which gets evaporated.
$(a)$ Heating leads to the evaporation of water.
$(b)$ Heating leads to the evaporation of dyes.
$(c)$ Heating leads to the filtration of water.
$(d)$ Heating leads to the distillation of dyes.
$(v)$ Define the process shown in the diagram
$(a)$ It is the process of conversion of a liquid into its vapours.
$(b)$ It is a process of separating insoluble component by filtering the solution
$(c)$ It is a process that separates a pure solid in the form of its crystals
$(d)$ It is a technique to separate two miscible liquids
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The modification Woese introduced by dividing the Monera into Archaebacteria (or Archaea) and Eubacteria (or Bacteria) is also in use. Further classification is done by naming the sub-groups at various levels as given in the following scheme:
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(1) Who proposed Five Kingdoms?
$(a)$ Ernst Haeckel $(1894)$
$(b)$ Robert Whittaker $(1969)$
$(c)$ Carl Woese $(1977)$
$(d)$ None of above
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$(d)$ All of the above
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$(b)$ Eubacteria
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