Question

Write the steps involved in the process of obtaining pure copper sulphate from an
impure sample.
ii. Give any one application of this method.
iii. Why is this technique better than simple evaporation to purify solids? [5]
11. i. Which process in meristematic tissue converts it to permanent tissue?

Answer 1

Answer:

i):crystallization

ii):Evaporate water from the copper sulphate solution so as to get a saturated solution. Cover the solution with a filter paper and leave it undisturbed at room temperature to cool slowly for a day. You will obtain the crystals of copper sulphate in the china dish. The crystallisation method is used to purify solids.

iii):Crystallisation technique is better than simple evaporation technique as some solids decompose and some impurities may remain dissolved in the solution even after filtration. On evaporation, these contaminate the solid.

11 (i):cellular differentiation

EXPLANATION: The process of cellular differentiation changes meristematic tissues into permanent tissues. while the permanent tissue containing the chlorophyll is the Parenchyma