1、which is most necessary when dealing with toxic reagents a、masks b、gloves c、goggles d、fume hood
2、do not wear（） in inflammable and explosive places a、cloth shoes b、rubber shoes c、spiked shoes d、sneakers
3、which is bad habit for use of laboratory refrigerator 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
4、after using reagents in chemical lab, you should to 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
5、the wrong statement about msds is 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
identification and classification of hazardous chemicals
test2
1、which the following chemical can be identificated by this symbol a、sulfur b、sodium c、silica gel d、ethanol
2、when using inflammable or explosive chemicals, which operation is wrong a、operate in fume hood b、avoid collision c、heat by open fire and oil bath d、avoid exposure to the sun
3、this is a nfpa 704 symbol， in which blue means a、health hazards b、flammability c、reactivity d、special hazards
4、which is not hazardous chemical a、ethanol b、potassium permanganate c、potassium cyanide d、potassium chloride
5、nfpa four color symbol can not show the chemical's a、health hazards b、physical hazard c、environmental hazards d、water hazards
hazardous chemicals
test 3
1、all the following medicines except () need to be stored in a special counter by a special person. a、potassium cyanid b、mercury chlorid c、thallium sulfat d、formaldehyde
2、the wrong statement about the storage of chemical reagents is: 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
3、the correct statement about the purchase of highly toxic drugs is: 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
4、if organic chemicals are on fire, the measure to be taken is a、co2 extinguisher b、high-pressure water gun c、abc fire extinguisher d、cover with damp cloth or sand
5、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 a、ethanol b、tetrahydrofura c、ether d、phenol
classification, storage and use of chemicals (part i)
test4
1、where should large quantities of reagents be placed a、on the reagent shelf b、in-laboratory reagent cabinets c、under-cabinet d、in reagent banks
2、how the combustion of sublimatable solids such as 2,4-dinitroanisole, naphthalene, dinitro-naphthalene, etc., should be extinguished 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.
3、which is incorrect to store of spontaneous combustion reagents a、separate storage b、storage in a ventilated, cool, dry place c、storage on reagent racks d、keep away from open fire
4、when receiving and storing chemicals, the following is incorrect 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.
5、how should the general chemicals in the chemical laboratory be classified a、classification by date of production b、subdivision into organic and inorganic fisrt c、random classification d、classification by date of acquisition
classification, storage and use of chemicals (part ii)
test 5
1、which is wrong about the storage of magnesium 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
2、how many kinds of non-metallic elements account for all chemical elements? a、18 b、22 c、25 d、28
3、which is not correct statement about bromine? 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
4、which of the following chemicals can cause explosion if stored with mercury? a、azide b、acetylene c、hydrochloric acid d、ammonia
5、which is the correct statement about sodium cyanide? a、sodium cyanide is not easy to deliquesce b、in case of acid, liberate highly toxic gas of hydrogen cyanide c、high toxic when inhaling trace powder d、belong to the category of highly toxic chemicals
classification, storage and use of chemicals( (part ⅲ)
test 6
1、hydrofluoric acid is a secondary corrosive inorganic acid, which is less harmful. if it is inadvertently contacted with the skin, it will not cause serious burns.
2、manganese dioxide will accelerate hydrogen peroxide decompose.
3、when the room temperature is high, some reagents, such as ammonia, etc., can easily flush out the gas-liquid flow when opening the stopper. but it is safe,can use directly.
4、silver nitrate can be stored without being protected from light.
5、mercury is very volatile, so it doesn't need to be treated if leakage. just turn on the ventilation.
safety and lab rules for organic chemistry laboratories
test 7
1、the following are not hard glass instruments a、round bottom flask b、measuring cylinder c、erlenmeyer flask d、three-necked bottle
2、the material added in the reaction flask should not exceed the volume of the flask a、1 / 2 b、2 / 3 c、3 / 5 d、1 / 3
3、when drying glass instruments in an oven, the instruments to be dried must be placed in the order of a、from upper layer to lower layer b、from the lower layer to the upper layer c、from the middle layer to the upper and lower layer d、random
4、the open container can be used to remove or store the liquid with low boiling point.
5、flammable reagents can be heated by open flame, water bath, oil bath, or heating jacket.
safe use of pressure vessels
test8
1、the following description are about several commonly used gases in lab,which is incorrect a、hydrogen should be store in a cool and ventilated place，and ensure that the maximum hydrogen content in the air does not exceed 1%. b、when acetylene cylinders are stored, transported and used the ambient temperature shall not exceed 40℃ c、nitrous oxide has anesthesia and excitatory effect, commonly known as laughing gas, which is easily decomposed when heated d、the oxygen cylinder shall be equipped with a cylinder cap in storage and transportation,to prevent grease or dust and mechanical damage
2、due to improper use, the pressure and temperature in the high-pressure sterilization pot will cause an explosion. a、chemical explosion b、physical explosion c、nuclear explosion d、decomposition and explosion
3、some pressure vessels (such as high-pressure reactors, gas cylinders, etc.) are often used in the lab. whicih is incorrect a、remove pressure bolts carefully under pressure b、acetylene cylinders must be equipped with special regulator and backfire preventer when using c、the cylinder cannot be used horizontally d、students use gas cylinders atfer training
4、when using gas cylinders, generally all the gas in the cylinders will be used up before refilling the same kind of gas.
5、when opening the valve, you should stand on the side of the pressure gauge. do not point your head or body at the valve of the gas cylinder, just in case the valve or pressure gauge rushes out.
hazards from lab water and electric
test9
1、which frequency current among the following options is the most harmful to human body? a、50 hz b、400 hz c、1000 hz d、2000 hz
2、with the difference of current through the human body, the degree of damage to the human body is also different. which of the following options is the most harmful to the human body? a、from one hand to the other b、from right hand to foot c、from left hand to foot d、from one foot to the other
4、which one can directly contact with water？ a、sodium metal b、calcium carbide c、metal hydride d、sulphur powder
5、there are many similar safety considerations when using water-used instruments，which one is incorrect a、ensure the water volume is normaland avoid dry burning b、check whether there is water leakage regularly c、change water regularly for cleaning d、in case of spillage, clean up after experiment
safe use of lab instruments
test 10
1、about operating an x-ray diffractometer, which operation is wrong a、when the warning light of the shutter is on, open the door and put in the sample carefully b、wear goggles during operation c、clean up accidentally spilled samples in time d、do not directly touch the x-ray window with your hands
2、the function of the metal mesh on the door of the atomic emission spectrometer is a、avoid rats biting b、anti-theft c、prevent the spread and diffusion of optical radiation d、prevent damage to the precision parts inside the instrument
3、who can't get into the mri lab? a、experimental teacher b、untrained experimental students c、people with pacemakers d、firemen
4、which of the following statements is true when using acetylene flame atomization in atomic absorption spectrometer a、when igniting, air should be introduced first, then acetylene b、when igniting, acetylene is introduced first,then air c、when flameout, turn off the air first and then acetylene d、none of the above is true
5、electric soldering is a common tool for circuit maintenance, which is wrong when using it？ a、cut off the power supply in time after use b、put back the soldering rack in time c、flammable materials can be placed around d、avoid scalds when using
lab hazardous wastes (part ii)
test 11
1、the measures in line with the principle of green chemistry are a、improving the preparation method and increasing the atom utilization b、experiment miniaturization c、replace pure water with cheap tap water d、design correlation reaction and make effective use of reaction waste
2、the description of waste liquid tank is correct a、waste liquid should be classified and poured into the corresponding waste tank b、using waste plastic bottle as waste liquid barrel, green and environmental protection c、the waste liquid tank should be labeled on the outside, indicating the type and main components of waste liquid d、open storage, easy to use
3、the fluorine-containing waste liquid should be stored in a glass container
4、for the inorganic acid waste liquid that does not contain heavy metal ions, the laboratory can collect and carry out the following treatment: slowly pour the waste acid into the excess aqueous solution containing sodium carbonate or calcium hydroxide (or use waste alkali ) neutralize each other and rinse with plenty of water.
5、in the treatment of azido compound waste residue, acid can be added to generate azido acid, and then diluted with a large amount of water to discharge.
fire-fighting in chemical lab
test 12
1、which method should be used to evacuate in the initial stage of fire a、take the elevator b、evacuate from the safe passage c、hide under the bench and wait for firefighters to rescue d、run to the roof and call for help
2、the clothes are on fire during the experiment, the best way is a、roll on the floor or flush with water b、take off clothes while running c、call for help while running d、take off clothes quickly
3、evacuation safety exit door of the laboratory building should be a、the electric door open freely b、the door open outward c、the door open inward d、electronic key door to ensure drug safety
4、in chemistry lab building, which are the common fire-fighting facilities or equipments a、abc type fire extinguisher b、dry sand c、fire blanket d、water
5、the correct method of extinguishing with a portable fire extinguisher is a、unplug the insurance plug b、hold the nozzle of the fire extinguisher in one hand c、a hand-held fire extinguisher and press down the handle d、spray at the fierce part of the flame