2021 Safety in the Chemical Laboratory(University of Science and Technology of China)1463606450 最新满分章节测试答案

本答案对应课程为:点我自动跳转查看
本课程起止时间为:2021-03-15到2021-06-28
本篇答案更新状态:已完结

Introduction of Safety in Chemical Lab Test 1

1、 问题:Which is most necessary when dealing with toxic reagents
选项：
A:Masks
B:Gloves
C:Goggles
D:Fume hood
答案: 【Gloves】

2、 问题:Do not  wear（） in inflammable and explosive places 
选项：
A:Cloth shoes
B:Rubber shoes
C: Spiked shoes
D: Sneakers
答案: 【 Spiked shoes】

3、 问题:which is  bad habit  for use of laboratory refrigerator
选项：
A: Regular defrosting and cleaning
B: Disinfect the inner surface regularly
C:All chemicals stored shall be marked with the name , the date and the storer
D:The flammable solution placed in the ordinary  refrigerator  shall be noted  on the door of  refrigerator
答案: 【The flammable solution placed in the ordinary  refrigerator  shall be noted  on the door of  refrigerator】

4、 问题:After using  reagents in chemical lab, you should to 
选项：
A:put it back in place immediatel
B: put it in an easy accessing place
C: make up by yourself,when it is insufficient
D:keep the  bottle open for  easy  use next time
答案: 【put it back in place immediatel】

5、 问题:The wrong statement about MSDS is 
选项：
A:It describes the measures of self rescue or mutual rescue on site when the operators are accidentally injured
B:It describes the preparation methods of chemicals
C:It describes the physical and chemical properties of chemicals
D:It describes the toxicological information on chemicals
答案: 【It describes the preparation methods of chemicals】

Identification and Classification of Hazardous Chemicals Test2

1、 问题:which the following chemical can be identificated by this symbol
选项：
A:Sulfur 
B: sodium
C:Silica gel 
D:ethanol
答案: 【 sodium】

2、 问题:when using inflammable OR explosive chemicals, which operation  is  wrong
选项：
A: Operate in fume hood
B: Avoid collision
C:Heat by open fire and oil bath
D:Avoid exposure to the sun
答案: 【Heat by open fire and oil bath】

3、 问题:This is a NFPA 704 symbol， in which blue means
选项：
A:Health hazards
B:Flammability
C: Reactivity
D:Special hazards
答案: 【Health hazards】

4、 问题:Which is not hazardous chemical
选项：
A: Ethanol
B:Potassium permanganate
C:Potassium cyanide
D:Potassium chloride
答案: 【Potassium chloride】

5、 问题:NFPA four color symbol can not show the chemical’s
选项：
A:Health hazards
B:Physical hazard
C:Environmental hazards
D:Water hazards
答案: 【Water hazards】

Hazardous Chemicals Test 3

1、 问题: All the following medicines except () need to be stored in a special counter by a special person.
选项：
A:Potassium cyanid
B: Mercury chlorid
C:Thallium sulfat
D:Formaldehyde
答案: 【Formaldehyde】

2、 问题:The wrong statement about the storage of chemical reagents is:
选项：
A: Volatile chemical reagents should be sealed and stored
B: Chemical reagents with conflicting chemical properties or fire extinguishing methods shall not be stored in the same cabinet
C:For easy access, the laboratory can store more commonly used reagents
D:Fire extinguishers, sand buckets and other fire-fighting supplies should be installed in conspicuous places
答案: 【For easy access, the laboratory can store more commonly used reagents】

3、 问题: The correct statement about the purchase of highly toxic drugs is:
选项：
A: Apply to the school security office and approve the preparatio
B:After approval by the Public Security Burea
C: After approval by the Environmental Protection Agency
D:Purchase through normal channels in designated dangerous  chemicals stores
答案: 【 Apply to the school security office and approve the preparatio;
After approval by the Public Security Burea;
Purchase through normal channels in designated dangerous  chemicals stores】

4、 问题: If organic chemicals are on fire, the measure to be taken is
选项：
A:CO2 Extinguisher
B:High-pressure water gun
C:ABC Fire Extinguisher
D:Cover with damp cloth or sand
答案: 【CO2 Extinguisher;
ABC Fire Extinguisher;
Cover with damp cloth or sand】

5、 问题: Which of the following chemicals should not be stored for more than one year, and if exposed to air, peroxides can form when exposed to light
选项：
A:Ethanol
B:Tetrahydrofura
C:Ether
D: Phenol
答案: 【Tetrahydrofura;
Ether】

Classification, Storage and Use of Chemicals (Part I) Test4

1、 问题:Where should large quantities of reagents be placed 
选项：
A:On the reagent shelf 
B:In-laboratory reagent cabinets
C: Under-cabinet 
D:In reagent banks 
答案: 【In reagent banks 】

2、 问题:How the combustion of sublimatable solids such as 2,4-dinitroanisole, naphthalene, dinitro-naphthalene, etc., should be extinguished
选项：
A:Extinguishing fires with ABC extinguisher
B: Continuous spraying of water over and around the burning area after the fire was extinguished
C:Extinguish fires with water
D:All of the above.
答案: 【All of the above.】

3、 问题:which is incorrect to store of spontaneous combustion reagents 
选项：
A:Separate storage                      
B: Storage in a ventilated, cool, dry place
C: Storage on reagent racks                
D:Keep away from open fire
答案: 【 Storage on reagent racks                】

4、 问题:When receiving and storing chemicals, the following is incorrect
选项：
A:Verify that the name indicated on the container is the required chemical
B: Learn and understand chemical hazard labels and symbols
C:Some chemicals should be stored separately
D:Acids and alkaline compounds may be stored in the same medicine cabinet.
答案: 【Acids and alkaline compounds may be stored in the same medicine cabinet.】

5、 问题:How should the general chemicals in the chemical laboratory be classified
选项：
A:Classification by date of production     
B:Subdivision into organic and inorganic fisrt
C: Random Classification             
D:Classification by date of acquisition
答案: 【Subdivision into organic and inorganic fisrt】

Classification, Storage and Use of Chemicals (Part II) Test 5

1、 问题:Which is wrong about the storage of magnesium 
选项：
A:Should be stored in a cool, ventilated and dry place
B:The warehouse lighting and exhaust equipment should use explosion-proof appliances
C: Can be stored in the same warehouse with halogen element
D:Separate storage with oxidants, acids and interacting items
答案: 【 Can be stored in the same warehouse with halogen element】

2、 问题:How many kinds of non-metallic elements account for all chemical elements?
选项：
A:18
B:22
C:25
D:28
答案: 【22】

3、 问题:  Which is not correct statement  about bromine?
选项：
A:Bromine is a dark brown liquid at room temperature, which is very volatile
B:Bromine is highly corrosive to metals, and it can cause an explosion in case of ammonia, hydrogen and other gases
C:When storing bromine in the laboratory, place it in a colorless reagent bottle, add water to form a water seal
D:Bromine shall not be stored in the same warehouse with organic substances, reducing agents and oxidants
答案: 【When storing bromine in the laboratory, place it in a colorless reagent bottle, add water to form a water seal】

4、 问题:Which of the following chemicals can cause explosion if stored with mercury?
选项：
A:Azide
B:Acetylene
C:Hydrochloric acid