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10.镁和铝分别跟足量的稀硫酸反应,若要制得相同质量的氢气,则消耗掉镁和铝的质量比是

····························································································································· [   ]

A.8:9           B.4:3           C.16:27         D.3:4

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9.把等质量的锌片分别放叭下列各溶液中,充分反应后,溶液质量减少的是·········· [   ]

A.Na2SO4              B.CuSO4                 C.H2SO4                D.AgNO3

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8.用相同质量的锌和镁分别跟足量的稀硫酸反应,以纵坐标表示生成氢气的质量,横

坐标表示反应时间,符合反应实际的图像是··························································· [   ]

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7.在硝酸铜和硝酸银的混合溶液中,加入一定量的铁粉,充分反应后,过滤上述反应的混合物,在滤液中滴加盐酸有白色沉淀产生,则过滤得到的金属是············································································ [   ]

A.Fe、Cu        B.Cu           C.Fe、Ag       D.Ag

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6.将金属,R和M分别浸入稀硫酸里,R溶解而M不溶解.将M浸入金属T的硝酸盐溶液里,M的表面析出T。这三种金属由弱到强的顺序是······························································································ [   ]

A.T、R、M      B.R、M、T      C.T、M、R      D.M、R、T

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5.下列反应中属于置换反应的是·········································································· [   ]

A.2Cu+O22CuO                         B.Fe+CuSO4FeSO4+Cu

C.CuO+COCu+CO2                                           D.NaCl+AgNO3AgCl+NaNO3

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4.公元二世纪,我国古代炼丹家魏伯阳著有(简易参同契)是世界上现存最早的一部炼丹专著。书中描写道:“金入于猛火,色不夺精光。”这句话是指黄金的性质在强热条件下·············································· [   ]

A.很稳定           B.很活泼           C.易氧化            D.易还原

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3.下列各种材料中,属于有机合成材料的是························································· [   ]

A.钢铁          B.水泥          C.聚乙烯            D.石灰石

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l.下列变化属于化学变化的晕················································································· [   ]

A.晾干的咸菜上出魂食盐晶体             B..铜器上生铜绿

C.日光灯通电发光                         D.花生油在冬天冻结

2.下列物质中,可由金属跟稀硫酸反应直接制取的是··········································· [   ]

A.Ag2SO4              B.CuSO4                 C.Fe2(SO4)3           D.A12(SO4)3

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31.还原1克氧化铜所需要的氢气,至少需要多少克含杂质5%的锌跟足量的稀硫酸反应才能获得?

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