本课配套习题挑战模式1/5
单选题
难度系数:
1.实验室中装有浓硫酸的试剂瓶应贴有的图标是
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY6ICD5p+l5rWT56Gr6YW455qE5oCn6LSo77yM5rWT56Gr6YW45YW35pyJ5by66IWQ6JqA5oCn77yM5Y+m5aSW6L+Y5pyJ5ZC45rC05oCn44CB6ISx5rC05oCn562J44CC
- 答案:QQ==
QeOAgea1k+ehq+mFuOacieW8uuiFkOiagOaAp++8jOS4uuiFkOiagOWTge+8jOaJgOS7peato+ehru+8jjxicj5C44CB5rWT56Gr6YW45bi45rip5LiL5Li65ray5L2T77yM5pyJ5by65rCn5YyW5oCn77yM5L2G5LiN5piv5piT54eD5ZOB77yM5omA5Lul6ZSZ6K+v77yOPGJyPkPjgIHmtZPnoavphbjkuI3lhbfmnInoh6rnh4PmgKfvvIzmiYDku6XplJnor6/vvI48YnI+ROOAgea1k+ehq+mFuOacieW8uuiFkOiagO+8jOS9huaXoOavku+8jOaJgOS7pemUmeivr++8jg==
本课配套习题挑战模式2/5
单选题
难度系数:
2.物质X可发生下列所示的两个反应,则X可能是①X+碱→盐+水②X+金属氧化物→盐+水.
A: HCl |
B: CO |
C: NaOH |
D: CuO |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY5Y+v5Lul55u05o6l6YeH55So5Luj5YWl5rOV77yM5bCG5Zub5Liq6YCJ6aG55L6d5qyh6L+b6KGM5YiG5p6Q5Y2z5Y+v44CC
- 提示2:6L+Y5Y+v5Lul57uT5ZCI6YW455qE5oCn6LSo77yM6YW45Y+v5Lul5LiO56Kx5Y+R55Sf5Lit5ZKM5Y+N5bqU77yM6L+Y5Y+v5Lul5LiO6YeR5bGe5rCn5YyW54mp5Y+N5bqU44CC
- 答案:QQ==
QeOAgeebkOmFuOiDveS4jueiseWPkeeUn+S4reWSjOWPjeW6lOeUn+aIkOebkOWSjOawtO+8jOebkOmFuOiDveS4jumHkeWxnuawp+WMlueJqeWPjeW6lOeUn+aIkOebkOWSjOawtO+8jOWImVjlj6/og73mmK/nm5DphbjvvIzmlYXpgInpobnmraPnoa7jgII8YnI+QuOAgUNP5LiN6IO95LiO56Kx5Y+N5bqU77yM5pWF6YCJ6aG56ZSZ6K+v44CCPGJyPkPjgIFOYU9I5LiN6IO95LiO56Kx5Y+N5bqU77yM5pWF6YCJ6aG56ZSZ6K+v44CCPGJyPkTjgIHmsKfljJbpkpnkuI3og73kuI7norHlj43lupTvvIzkuI3og73kuI7ph5HlsZ7msKfljJbnianlj43lupTvvIzmlYXpgInpobnplJnor6/jgII=
本课配套习题挑战模式3/5
单选题
难度系数:
3.在四支试管中分别加入2mL稀硫酸,并滴入几滴石蕊试液,如果分别不断加入下列物质直至过量,其中仍能使溶液显红色的是
A: Fe |
B: CuO |
C: Na2CO3 |
D: BaCl2 |
一次做对,真牛!
+5奖励规则>
- 提示1:5YiG5Yir5YiG5p6Q5Yqg5YWl5Zub56eN54mp6LSo5ZCO6IO95ZCm5Y+R55Sf5Y+N5bqU77yM5Lqn54mp5YiG5Yir5piv5LuA5LmI77yM5Lqn54mp5Li66YW45oCn6L+Y5piv56Kx5oCn44CC
- 答案:RA==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.向一定质量的稀盐酸中,加入足量的表面已经生锈的铁片,产生氢气的质量Y和时间T的关系图像正确的是
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:55Sf6ZSI55qE6ZOB54mH6YGH6YW477yM5bqU5b2T5piv6ZOB55qE5rCn5YyW54mp5YWI5Y+C5Yqg5Y+N5bqU77yM5Y+N5bqU5a6M5ZCO77yM6ZOB5byA5aeL5LiO6YW45Y+N5bqU44CC
- 答案:Qg==
6KGo6Z2i5bey57uP55Sf6ZSI55qE6ZOB54mH5Yqg5YWl55uQ6YW45Lit77yM55uQ6YW45Lya5YWI5LiO6ZOB6ZSI5Y+N5bqU77yM5LiA5byA5aeL5LiN5Lya5pyJ5rCi5rCU55Sf5oiQ77yM5b2T6ZOB6ZSI5raI6ICX6Zyy5Ye66ZOB5ZCO77yM6ZOB5Lya5LiO55uQ6YW45Y+N5bqU55Sf5oiQ5rCi5rCU77yM55uQ6YW45raI6ICX5a6M5q+V77yM5Y+N5bqU5Y2z5YGc5q2i77yM6KeC5a+f5Zu+5YOP77yM5Y+q5pyJQuWbvuS4juS6i+WunuebuOespuOAgg==
本课配套习题挑战模式5/5
单选题
难度系数:
5.向足量的稀硫酸中加入一定量的锌粉,下列函数图像横坐标表示反应时间,纵坐标表示反应的有关变化情况,其中正确的是
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:QemhuemcgOimgeWIhuaekOWPjeW6lOWQjuS6p+eJqeeahOmFuOeiseaAp++8jOWvvOeUteaAp+WImeW6lOivpeeci+a6tua2suS4reemu+WtkOeahOWkmuWwkeOAgg==
- 提示2:5b2T56iA56Gr6YW45a6M5YWo5Y+N5bqU5ZCO77yM5Y+N5bqU5LiN5YaN6L+b6KGM77yM5b6I5aSa6YeP5L6/5LiN5YaN5Y+R55Sf5pS55Y+Y44CC5q2k5pe25bC9566h57un57ut5Yqg5YWlWm7vvIzkvYbljbTmsqHmnInov5vlhaXliLDmurbmtrLkuK3kuobjgII=
- 答案:Qg==
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