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Free Online Mock Chemistry Multiple Choice Test on SBlock Elements
Sub Category : SBlock Elements Test : 9 Time Left :
1)Iron ore is concentrated by
(1) From floatation (2) Electrolysis (3) Roasting (4) Magnetic treatment
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2)Chromium is obtained by reducing purified chromite ore with
(1) Red hot coke (2) Gaseous hydrogen (3) Aluminium powder (4) Carbon monoxides
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3) Epsom salt’s chemical formula is(1) MgSO4. 7H2O (2) Mg(OH)2 (3) 2 CaSO4. H2O (4) BaSO4
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4) The chemical formula of gypsum is(1) CaSO4 (2) CaSO4 . 0.5H2O (3) CaSO4 . H2O (4) CaSO4 . 2H2O
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5) The salt used for performing bead test in qualitative inorganic analysis is(1) K2SO4 . Al2(SO4)3 . 24H2O (2) CaSO4 . 2H2O (3) FeSO4 . (NH4)2SO4 . 6H2O(4) Na(NH4)HPO4 . 4H2O
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