Question

Is matter around us pure
Name the technique used to separate
a)butter from curd b) salt from sea water c) camphor from salt
d) dye from ink e)oil and water f) drugs from blood
g)slag from molten iron h) components from blood and urine in diagnostic labs i) acetone and water j) components of air
k) components of petroleum.
2. Which of the following will show Tyndall effect
a) salt solution b) milk c) copper sulphate solution d) starch solution
3. Classify the following into elements, compounds and mixtures
Sodium,soil,sugar solution, silver, calcium carbonate, tin, silicon, coal, air, soap, carbon dioxide and blood.
4.What would happen if
a) saturated solution of potassium chloride prepared at 60⁰Cis allowed to cool at room temperature.
b)a mixture of iron filings and sulphur are heated strongly

Answer 1

(a) butter from curd → Centrifugation

(b) salt from sea-water → Evaporation

(c) camphor from salt → Sublimation

(d) dye from ink → Chromatography

(e) oil and water → Seperation Funnel

f) drugs from blood → Chromatography