PAKTURK INTERNATIONAL SCHOOL & COLLEGES ISLAMABAD hooked:CHEMISTRYMARKS: 25 straighten out:10-O direct TIME: 40 Min. try ALL THE QUESTIONS ON YOUR ANSWERSHEETS WITH beseeming PRESENTATION. Q.No.1:Choose the most satisfactory answer. 1.An excess of stretch along sulphuric acrid reacts with both aqueous barium hydroxide and aqueous barium chloride. In what way the two reactions be same? A. a bollocks is produced. B. an insoluble salt is produced. C. The net examination examination pH is 7. D. Water is produced. 2.Which salt could be prepared by a method involving crystallization as a final play? A. barium sulfate B. calcium carbonate C. cash chloride D. sodium nitrate 3.An piece X forms a hydroxide, which dissolves, both in acids and in alkalis. What could X be? A. aluminium B. calcium C. pig bed D. iron 4.In which reaction is vitiate sulphuric acid non behaving as an acid? A. H2SO4 + 2NaOH ((((( Na2SO4 + 2H2O B. H2SO4 + BaCl2 ((((( BaSO4 + 2HCl C. H2SO4 + CuO ((((( CuSO4 + H2O D. H2SO4 + Mg ((((( MgSO4 + H2 5.Which words in the instrument panel complete the following description of the preparation of copper (II) sulphate? An excess copper (II) oxide was added to slim down sulphuric acid. Th garland was __1___ to remove the excess of oxide.
The ancestor was __2___ to half its garishness and so cooled, so that it __3___. | |1 |2 |3 | |A |distilled |evaporated | crystallise | |B |distilled |filtered |evaporated | |C |filtered...If you loss to get a bounteous essay, order it on our website:
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