Multiple choice

Match the entries in Column-I with those in Column-II.

Column-I Column-II
P. turquoise 1. ZnS + BaSO4
Q. lithopone 2. AlPO4.Al(OH)3.H2O
R. talc 3. 3MgO.4SiO2.H2O
S. diaspore 4. Al2O3.H2O

  1. P - 2, Q - 1, R - 4, S - 3

  2. P - 2, Q - 1, R - 3, S - 4

  3. P - 3, Q - 2, R - 1, S - 4

  4. P - 2, Q - 4, R - 3, S - 1

  5. P - 4, Q - 3, R - 2, S - 1
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B Correct answer
Explanation

Turquoise (AlPO4.Al(OH)3.H2O) is the mineral of aluminium. Lithopone is a mixture of ZnS and BaSO4. It is a brilliantly white fine powder and has a tendency to turn grey on exposure to the sunlight. Talc is a pure magnesium silicate in the form of 3MgO.4SiO2.H2O found naturally in soap stones. Diaspore (Al2O3.H2O) is the mineral of aluminium. Hence, the correct sequence of codes is P - 2, Q - 1, R - 3, S - 4.

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