Question

Classify wood mirror, paper, scissors, knife, pen seed, apple, spoon, sponge, bull, cotton, shoes, doll, tumbler, and wool on the basis of appearance, hardness, transparency and solubility

Answer 1

Of the items mentioned above, none are soluble in water. Solubility is determined by the extent to which a given solute completely mixes with the solvent. Evidently, none of the above will dissolve in water.

 

The only transparent object is the glass tumbler. If prepared properly, glass can be transparent. The other objects are all opaque.

 

In terms of sharpness, only the knife and scissor are sharp. The others are blunt instruments without a cutting edge.

 

The degree of hardness for the abovementioned items is subjective to the material from which it is made, and no definite statement can be made regarding whether they are hard or not.

Answer 2

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