State whether the statements given below are True or False.

(i) Stone is transparent, while glass is opaque.
(ii) A notebook has luster while eraser does not.
(iii) Chalk dissolves in water.
(iv) A piece of wood floats on water.
(v) Sugar does not dissolve in water.
(vi) Oil mixes with water.
(vii) Sand settles down in water.
(viii) Vinegar dissolves in water.


Answer :

(i) Stone is transparent, while glass is opaque. \(\rightarrow\) FALSE

REASON : Stone is opaque because light does not pass through stone but glass is transparent because the light is passed through the glass.


(ii) A notebook has luster while the eraser does not. \(\rightarrow\) FALSE

REASON : No, notebook and eraser don't have luster because they aren't shiny objects.


(iii) Chalk dissolves in water. \(\rightarrow\) FALSE

REASON : No chalk does not dissolves in water because chalk is not a soluble substance.


(iv) A piece of wood floats on water. \(\rightarrow\) TRUE


(v) Sugar does not dissolve in water. \(\rightarrow\) FALSE

REASON : Sugar dissolve in water because it is a soluble substanse.


(vi) Oil mixes with water. \(\rightarrow\) FALSE

REASON : No oil does not mix with water because it is not a soluble


(vii) Sand settles down in water. \(\rightarrow\) TRUE


(viii) Vinegar dissolves in water.\(\rightarrow\) TRUE

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