Atomic number of which of the following elements is greater than that of Calcium?
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Which of the following is used in gunpowder?
Which was not produced by volcanic outgassing?
Who is the author of "The English Teacher"?
(1132 + 1152 + 1172 - 113 x 115 - 115 x 117 - 117 x 113) is equal to
Who discovered bacteria?
Who invented the electric tram?
Anti-apartheid activist _______ was imprisoned for 27 years by the South African government in 1962.