NCERT Question 4 - Chapter 4 Class 6 - Sorting Materials into Groups

State whether the statements given below are True or False.

(i) Stone is transparent, while glass is opaque.

(ii) A notebook has luster while an 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 not transparent,it is opaque as we cannot see through a stone.

Glass can be both transparent and translucent . So, False. 

(ii) A notebook has luster while an eraser does not.So, True

(iii) Chalk does not dissolve in water. So,  False.

(iv) A piece of wood is lighter than water so it floats on water. So, True.

(v) Sugar dissolves in water. So, False

(vi) ,oil doesn't mix with water,it floats on water . So, False.

(vii) Sand is heavier than water so it settles down.So, True.

(viii) vinegar is soluble in water . So,  True.