During summer holidays, a group of children collected a lump of salt, green grass, broken glass piece, a small thermal box pen, iron nail, glass marbles, hair, naphthalene ball, a piece of sugar candy(mishri) and tried to group them on the basis of properties given in Table 4.1 below. Help them in filling the Table.

Which among the following materials would you identify as soft materials and why?

Ice, Rubber band, leaf, eraser, pencil, pearl, a piece of wooden board, cooked rice, pulses and fresh chapatti.

You are provided with the following materials- turmeric, honey, mustard oil, water, glucose, rice flour, groundnut oil.

Make any three pairs of substance where one substance is soluble in the other and any three pairs of substances where one substance remains insoluble in the other substances.

Arrange the jumbled words to arrive at the appropriate names of materials and also write two uses of each.

(a) milaunim

(b) tcaslpi

(c) soekrnee

(d) gavnier

Match the object given in Column I with the materials given in Column II