对应课程:点击查看
起止时间:2020-03-04到2020-06-01
更新状态:已完结
第五章 The Variety of Energy The Variety of Energy
1、 The anode of lead storage battery is .
A:Lead
B:Lead(IV) coated with Lead Dioxide
C:Sulphuric acid
D:–
答案: Lead(IV) coated with Lead Dioxide
2、 What is the anode reaction of Mercury Batteries?
A:Zn(Hg) +2OH-(aq) → ZnO(s) +H2O +2e-
B:HgO(s) +H2O(l) +2e- → Hg(l) + 2OH-(aq)
C:Zn(Hg) +HgO(s) → ZnO(s) + Hg(l)
D:–
答案: HgO(s) +H2O(l) +2e- → Hg(l) + 2OH-(aq)
3、 The secondary cells are those which can be .
A:rechargeable
B:non-rechargeable
C:used only two times.
D:–
答案: rechargeable
4、 Galvanic cells belong to .
A:primary cells
B:secondary cells
C:fuel cells
D:–
答案: primary cells
5、 In the galvanic cell based on Zn(s) +2H+(1M) → Zn2+ (1M) + H2 (1atm), what is the cathode reaction?
A:Zn(s) – 2e- → Zn(aq).
B:2H+(aq) + 2e- → H2 (1atm).
C:2H+(1M) → Zn2+ (1M) + H2 (1atm).
D:–
答案: Zn(s) – 2e- → Zn(aq).
6、 Scientists set the standard reduction potential (E0) equals to .
A:1V
B:0V
C:0.1V
D:–
答案: 0V
7、 is the common used the unit of energy, for example, food.
A:Joule
B:Watt
C:Calorie
D:–
答案: Calorie
8、 Energy conservation and consumption is the first law of thermodynamics.
A:first
B:second
C:third
D:–
答案: first
9、 In the order to guarantee the increasing energy consumption, our society should explore new energy .
A:applications
B:resources
C:use
D:–
答案: resources
10、 In the reaction, if the energy of molecules of reactant is the product it will given off energy heat.
A:greater than
B:equal to
C:lower than
D:–
答案: equal to
11、 The coals, oil and natural gases are called .
A:fossil fuels
B:newer fuels
C:newer energy
D:–
答案: fossil fuels
12、 Buring 1 gram coal releases about energy.
A:30 KJ
B:10 KJ
C:50 KJ
D:–
答案: 30 KJ
13、 Coal is a main energy sources of the world.
A:1000 years ago
B:at present
C:in the future
D:–
答案: at present
14、 In USA, 5% of the world’s population consume of the oil produced worldwide.
A:25%
B:50%
C:75%
D:–
答案: 25%
15、 Petroleum is a complex mixture with of different compounds.
A:hundreds
B:millions
C:thousands
D:–
答案: thousands
16、 The main component of petroleum is .
A:carbon oxides
B: hydrocarbons
C:hydronitrogens
D:–
答案: hydrocarbons
17、 Heavy molecules need higher temperature to overcome their stronger .
A:ionic bonds
B:covalent bonds
C:intermolecular forces
D:–
答案: intermolecular forces
18、 Natural gas is primarily .
A:ethane
B:propane
C:methane
D:–
答案: methane
19、 Fossil fuel contains ① coal; ② Petroleum; ③ Natural gas; ④ Combustible ice.
A:①, ②；
B:②, ④；
C:①, ②, ③, ④.
D:–
答案: ①, ②, ③, ④.
20、 Where did the flammable ice come from?
A:River bottom;
B:Ocean bottom；
C:Mountain top.
D:–
答案: Ocean bottom；
21、 The function of a hydropower station is to .
A:Convert potential energy into electric energy;
B:Convert electric energy into potential energy；
C: Convert water energy into electric energy.
D: —
答案: Convert potential energy into electric energy;
22、 Alpha-rays can’t pass through materials.
A:air
B:lead metal
C:oxygen
D:–
答案: lead metal
23、 Trance are used in the medicine for the diagnosis of internal disorders the technology called as .
A:physical imaging;
B:chemical imaging；
C:medical imaging.
D:–
为了方便下次阅读，建议在浏览器添加书签收藏本网页
添加书签方法：
1.电脑按键盘的Ctrl键+D键即可收藏本网页
2.手机浏览器可以添加书签收藏本网页
获取更多MOOC答案，欢迎在浏览器访问我们的网站：http://mooc.mengmianren.com
注：请切换至英文输入法输入域名，如果没有成功进入网站，请输入完整域名：http://mooc.mengmianren.com/
我们的公众号
打开手机微信，扫一扫下方二维码，关注微信公众号：萌面人APP
本公众号可查看各种网课答案，还可免费查看大学教材答案
点击这里，可查看公众号功能介绍
一键领取淘宝，天猫，京东，拼多多无门槛优惠券，让您购物省省省，点击这里，了解详情
干饭人福利，饿了么红包每日领
