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{
"question_id": "05cbc5f7246b43a39cef430915e931a0",
"filename": "mid_076.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental subtask is this set of operations primarily performing?",
"options": [
"Acid extraction of cell samples",
"Load samples into a chromatography system for separation",
"Prepare standard gradient solutions for subsequent detection",
"Colorimetric quantitative reaction of the target analyte"
],
"answer": "C"
},
{
"question_id": "a2a1de30f9ad4717b0b02e4cd2d1972e",
"filename": "mid_077.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which experimental stage do these operations most closely correspond to?",
"options": [
"Chromatographic separation and elution collection",
"Colorimetric detection and result interpretation",
"Sample pretreatment and condition adjustment",
"Instrument calibration and blank control setup"
],
"answer": "C"
},
{
"question_id": "b0306f44d2a64055826dbaacfe4c488e",
"filename": "mid_078.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, what is this stage mainly preparing for in the subsequent conversion?",
"options": [
"Directly heat the reaction mixture to promote decomposition",
"First perform extraction and phase separation to isolate the organic phase",
"Immediately add an acidic quenching solution to stop the reaction",
"First fully dissolve the product and establish low-temperature conditions"
],
"answer": "D"
},
{
"question_id": "f521115cc0ea46d598af04c34829e9a8",
"filename": "mid_079.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental task are these operations currently closest to completing?",
"options": [
"Separate the post-reaction supernatant by centrifugation",
"Induce particle deformation and folding by heating",
"Remove organic residues from the sample surface by acid washing",
"Fix particles by freezing for subsequent imaging"
],
"answer": "B"
},
{
"question_id": "7f6751bcb0724628bd40af9505facba9",
"filename": "mid_080.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental subtask are these operations closest to completing?",
"options": [
"Perform electrical testing on the device",
"Clean and activate the substrate surface",
"Prepare and anneal perovskite thin films",
"Separate and purify reaction products"
],
"answer": "C"
},
{
"question_id": "b1b0615ee5504b73a455d63be2e84802",
"filename": "mid_081.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which experimental subtask are these operations closest to completing?",
"options": [
"Separate and purify the reaction products",
"Assemble a gas electrochemical reaction setup",
"Perform subsequent activation treatment of the electrode surface",
"Prepare catalyst ink suitable for electrode testing"
],
"answer": "D"
},
{
"question_id": "371ce53665764a0fb92b377f2e4a9a5d",
"filename": "mid_082.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage of processing do the current actions most closely correspond to?",
"options": [
"Cool the product, then perform post-treatment",
"Transfer the solid product into a new container",
"Separate unreacted materials by filtration",
"Heat the reaction mixture and maintain it at the set temperature"
],
"answer": "D"
},
{
"question_id": "fac4e40f66cd4cef86c4cd0099b1ab3a",
"filename": "mid_083.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental stage do the current actions most closely correspond to?",
"options": [
"Sample preparation and surface treatment",
"Electrochemical reaction initiation and deposition",
"Product separation and collection",
"Final characterization and data recording"
],
"answer": "A"
},
{
"question_id": "4726ea76e47e48cbac127266fafdbb72",
"filename": "mid_084.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which step are the current preparations most likely for?",
"options": [
"Establishing and optimizing separation conditions",
"Post-processing of result images",
"Sample preparation and system cleaning",
"Waste liquid handling after instrument shutdown"
],
"answer": "C"
},
{
"question_id": "6b4baa39d83344a7aba040bc89b74ca0",
"filename": "mid_085.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which step are the current actions mainly preparing for in the subsequent binding detection?",
"options": [
"Immobilize target molecules from the sample onto a carrier",
"Stop the reaction and develop color",
"Transfer the final product into a new container",
"Remove unbound components and reduce background signal"
],
"answer": "D"
},
{
"question_id": "3803449c76814578a82b5f178a7e04c3",
"filename": "mid_086.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage do the current actions most closely correspond to?",
"options": [
"Prepare the reaction solutions during the pretreatment stage",
"Perform structural characterization of the final product",
"Transfer the sample for high-temperature calcination",
"Separate and purify the product after the reaction"
],
"answer": "D"
},
{
"question_id": "f069eda3a5464380898f66f3aa4230b6",
"filename": "mid_087.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage do the current actions most closely correspond to?",
"options": [
"Combine nanoparticles with activated components",
"Pretreat and activate reagents for later use",
"Incubate the reaction mixture to stabilize it",
"Remove excess components by centrifugation"
],
"answer": "A"
},
{
"question_id": "bded3f03df294b569c708f1c3895ffce",
"filename": "mid_088.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage of the experimental procedure are these operations closest to?",
"options": [
"Sample pretreatment and preparation",
"Target separation and purification",
"Instrument calibration and blank measurement",
"Final result reading and recording"
],
"answer": "A"
},
{
"question_id": "160b4153438f4d6e85a43017f5b51b28",
"filename": "mid_089.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which preparatory step for the subsequent reaction are these operations closest to?",
"options": [
"Transfer sensitive samples into an inert environment for storage",
"Perform reflux heating on the reaction mixture",
"Filter and wash the product for purification",
"Introduce dry solvent and complete line purging"
],
"answer": "D"
},
{
"question_id": "a6bdbea3ffb842a8b77af7bdfb9d39bb",
"filename": "mid_090.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental subtask are these operations closest to completing?",
"options": [
"Wash and pre-treat cells with cold buffer",
"Subject the sample to a short high-temperature mixing step",
"Use rapid centrifugation to remove culture medium and retain cells",
"Separate cells into different fractions for subsequent analysis"
],
"answer": "A"
},
{
"question_id": "1ef0dedfa9974905947416146b9b274f",
"filename": "mid_091.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage are these operations closest to?",
"options": [
"Electrochemical testing and signal acquisition",
"Product separation and washing",
"Final encapsulation and performance sealing",
"Sample pretreatment and substrate preparation"
],
"answer": "D"
},
{
"question_id": "96141ff08e64417db879d098d72e6aaa",
"filename": "mid_092.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which experimental subtask are these operations closest to completing?",
"options": [
"Dispense samples into plates for subsequent testing",
"Mix the reaction thoroughly and begin incubation",
"Remove excess components through multiple treatments",
"Redisperse the processed sample into buffer"
],
"answer": "A"
},
{
"question_id": "5edcf397af964dc5b1419c66c9cd681f",
"filename": "mid_093.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which category of experimental step are these operations closest to?",
"options": [
"Acidic cleavage prior to product purification",
"Initiation of heating of the reaction system",
"Resin pretreatment and solvent exchange",
"Concentration and drying of the final sample"
],
"answer": "C"
},
{
"question_id": "e2d7aadf2a444804bf1397a85e8319ba",
"filename": "mid_094.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which experimental stage do the current operations most closely correspond to?",
"options": [
"Sample pretreatment and quality confirmation",
"Reaction system start-up and sample loading",
"Separation and washing of products",
"Instrument calibration and blank measurement"
],
"answer": "A"
},
{
"question_id": "b1709a9815424c08964b0ba9eca53bbb",
"filename": "mid_095.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental subtask are these operations most closely performing?",
"options": [
"Pre-treat raw materials and prepare the reaction system",
"Separate and purify reaction products",
"Dry and weigh solid samples",
"Perform structural characterization of the final product"
],
"answer": "B"
},
{
"question_id": "293024e96a1d454285a9af8a64a7ddde",
"filename": "mid_096.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage are these operations most closely associated with?",
"options": [
"Preparation and mixing of the reaction system",
"Separation, purification, and collection of products",
"Sample pretreatment and carrier preparation",
"Instrument parameter setup and signal acquisition"
],
"answer": "C"
},
{
"question_id": "a418aa369b6c4d9298e25ecb67cb9a19",
"filename": "mid_097.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental subtask are these operations most closely performing?",
"options": [
"Perform solid-liquid separation and collect the precipitate",
"Prepare and uniformly mix the reaction precursor solution",
"Wash and dry the product",
"Transfer the sample into containers for subsequent characterization"
],
"answer": "B"
},
{
"question_id": "7d7462aa545a4b5783c57162a06af119",
"filename": "mid_098.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage are these operations preparing for?",
"options": [
"Separate, purify, and collect products",
"Pre-treat and stabilize the solvent system",
"Directly perform structural identification of the target compound",
"Complete the final quantitative titration"
],
"answer": "A"
},
{
"question_id": "e4d5c4b85ed7492990be8237c7391c00",
"filename": "mid_099.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which experimental task are these operations most closely performing?",
"options": [
"Assemble and commission the apparatus required for subsequent processing",
"Prepare and process the mixed sample for vesicle formation",
"Perform microscopic observation to confirm the formed samples",
"Prepare samples for mechanical property measurements"
],
"answer": "B"
},
{
"question_id": "41465dc36ec04b2195d0886d3081ad0e",
"filename": "mid_100.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental step do the current operations most closely correspond to?",
"options": [
"Pre-treatment and preparation of the reaction system",
"Separation and purification of the product",
"High-temperature treatment of the reaction system",
"Drying and storage of the final product"
],
"answer": "C"
},
{
"question_id": "9d92da4de02b44eea688b0d9a95672cd",
"filename": "mid_101.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which step are the current operations primarily preparing for?",
"options": [
"Further enrich the target component from the mixture",
"Uniformly disperse the particulate material and withdraw an appropriate volume",
"Heat the sample to promote the reaction",
"Transfer the final product into a new reaction vessel"
],
"answer": "B"
},
{
"question_id": "3e2628b5cd5f484e99d82ab300bfb807",
"filename": "mid_102.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of preparation for subsequent measurements do the current operations most closely correspond to?",
"options": [
"Perform separation and purification of the sample",
"Complete preparation of the sample and labeling buffer",
"Perform quantitative analysis of the resulting data",
"Establish and calibrate instrument operating conditions"
],
"answer": "D"
},
{
"question_id": "b7a802af7b594bb5bbad39f1c9c99988",
"filename": "mid_103.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, what type of preparation for subsequent high-temperature treatment are the current operations primarily performing?",
"options": [
"Establish an inert atmosphere and assemble the reaction system",
"Wash and separate the product",
"Transfer the sample onto a film-forming substrate",
"Drying and storage of the final product"
],
"answer": "A"
},
{
"question_id": "f9c8f92b3f40425498b2bdfe80456d4f",
"filename": "mid_104.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which subsequent step are the current procedures primarily preparing for?",
"options": [
"Return the solid-phase support to a residue-free state as much as possible",
"Convert intermediates on the resin into quaternary ammonium products that can undergo further reaction",
"Transfer the reaction system into the activation stage before the next coupling",
"Cleave and collect the final product from the solid phase"
],
"answer": "B"
},
{
"question_id": "1b610f47f1294007b3d477643fb57c52",
"filename": "mid_105.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which category of experimental preparation do the current operations most closely correspond to?",
"options": [
"Equipment and line preparation prior to reaction start",
"Extraction treatment before product separation",
"Concentration and recovery after sample purification",
"Instrument calibration before endpoint detection"
],
"answer": "A"
},
{
"question_id": "f9809778985149d19935141fe84ee7ad",
"filename": "mid_106.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, what is this set of operations most likely doing?",
"options": [
"Performing liquid-liquid extraction and phase separation of the product",
"Purifying by column chromatography",
"Setting up a catalytic system and preparing for subsequent reactions",
"Drying the solid sample to constant weight"
],
"answer": "C"
},
{
"question_id": "8ade4d077eaa4aecb60f2b1419c03ecd",
"filename": "mid_107.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which experimental subtask is this set of operations most closely completing?",
"options": [
"Performing solid-liquid separation",
"Measuring the sample's pH",
"Drying and storing the product",
"Preparing the reaction premix"
],
"answer": "D"
},
{
"question_id": "3117d9c492ab48148a004b118ca77300",
"filename": "mid_108.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which step are these operations primarily preparing for?",
"options": [
"Establishing the fluid inlet path to the apparatus",
"Centrifuging the sample to separate phases",
"Transferring the product into a collection tube",
"Sterilizing the apparatus by high-temperature treatment"
],
"answer": "A"
},
{
"question_id": "da5676c62aa64fe69e7875abcb668064",
"filename": "mid_109.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage are these operations closest to?",
"options": [
"Extracting the sample with solvent and thoroughly homogenizing it",
"Transferring the processed sample into a suitable container for subsequent handling",
"Performing high-speed separation at low temperature",
"Preparing the supernatant for fluorescence measurement"
],
"answer": "C"
},
{
"question_id": "3762c25af1ae41c2b16a7828804c12fb",
"filename": "mid_110.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which step are these operations primarily preparing for?",
"options": [
"Letting the sample fully equilibrate",
"Drying the product to set its form",
"Further diluting the solution and aliquoting it",
"Transferring the sample into a reducing environment"
],
"answer": "D"
},
{
"question_id": "aac6cddf5e6c4e6392b7a260b980c8ff",
"filename": "mid_111.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which subsequent step are these operations mainly preparing for?",
"options": [
"Preparing a homogeneous precursor solution before the reaction",
"Centrifuging the product to separate it",
"Drying the product",
"Measuring the particle size of the final particles"
],
"answer": "A"
},
{
"question_id": "13b9e893661f4afe891a60dd79a5da4a",
"filename": "mid_112.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental procedure does the current set of operations most closely resemble?",
"options": [
"Pre-reaction dosing and system setup",
"Product extraction and organic phase separation",
"Filtration and washing of the solid product",
"Drying and weighing of the final product"
],
"answer": "A"
},
{
"question_id": "42f2d94ea2c1440eab9c2d5511ab4b96",
"filename": "mid_113.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which step is the current set of operations primarily preparing for?",
"options": [
"Determining whether the reaction has completed",
"Changing product properties by adjusting pH",
"Separating the sample at high speed to remove the supernatant",
"Concentrating the product into a container for further processing"
],
"answer": "D"
},
{
"question_id": "5d00643b61904c9399e36ec330319d0e",
"filename": "mid_114.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which experimental task is the current set of operations closest to completing?",
"options": [
"Final kneading and shaping of the dough",
"Preparing a homogeneous suspension for subsequent molding",
"Cooling and setting the finished noodles",
"Transferring the sample to centrifugation for separation"
],
"answer": "B"
},
{
"question_id": "4ae7f6d4dce44fd2acd843651f5a1880",
"filename": "mid_115.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which subsequent step is the current set of operations mainly preparing for?",
"options": [
"First prepare the dispersion medium and fully dissolve it",
"First distribute the solid sample into containers",
"First complete filtration and collection of the product",
"First heat the reaction mixture under reflux"
],
"answer": "A"
},
{
"question_id": "16aaad286b9d463a92c6f40433c844ac",
"filename": "mid_116.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which preparatory step for subsequent high-temperature treatment does this set of operations most closely resemble?",
"options": [
"Compress the raw material into a compact block for easier handling",
"Load the sample with a protective powder into a high-temperature-resistant container",
"Heat in the furnace and hold at temperature for a prolonged period",
"Cool the final product and then remove it"
],
"answer": "B"
},
{
"question_id": "77f70c651acd455981493b737001072f",
"filename": "mid_117.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage of the experimental workflow does the current set of operations most closely correspond to?",
"options": [
"Homogenization and dilution during pre-treatment",
"Separation and collection of the product",
"Setting parameters before initiating the reaction",
"Drying and storage of the final sample"
],
"answer": "C"
},
{
"question_id": "704d3846b9804653bb62c27f8a25be60",
"filename": "mid_118.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on the video clip, which stage is this set of operations closest to?",
"options": [
"Instrumental analysis of the target analyte",
"Preparation and volumetric adjustment of standard solutions",
"Data analysis of detection results",
"Salt adjustment during sample pretreatment"
],
"answer": "D"
},
{
"question_id": "49fd25d9f0aa4a54907a4c209b140ac2",
"filename": "mid_119.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on the video clip, which subsequent step is this set of operations primarily preparing for?",
"options": [
"High-temperature sintering of the sample",
"Transferring the reaction mixture into a collection vessel",
"Centrifugation of the sample",
"Mounting the sample on a microscope stage"
],
"answer": "D"
},
{
"question_id": "979a2cc45c814162a9346d0e84570e1d",
"filename": "mid_120.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on the video clip, which part of the experimental procedure is this set of operations closest to?",
"options": [
"Sample separation, purification, and collection",
"Pretreatment and measurement condition setup",
"Product drying and weight confirmation",
"Instrument long-term storage and shutdown"
],
"answer": "B"
},
{
"question_id": "fb1c372de1e04505908f16d1c97053f4",
"filename": "mid_121.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on the video clip, which type of experimental subtask is this set of operations closest to completing?",
"options": [
"Labeling of protein samples",
"Centrifugation of the product",
"Final volumetric adjustment of the solution",
"Pre-cleaning of microscope slides"
],
"answer": "D"
},
{
"question_id": "cf684e9d2bac463cb45cd57d1a7f61d2",
"filename": "mid_122.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on the video clip, which type of experimental subtask is this set of operations closest to completing?",
"options": [
"Sterilization of prepared solutions",
"Seeding cells into a 3D scaffold",
"Molding and curing the final product",
"Preparing and adjusting the polymer precursor solution"
],
"answer": "D"
},
{
"question_id": "b86e013614864f5cb1449cdc4f0d98a7",
"filename": "mid_123.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on the video clip, which experimental subtask is this set of operations closest to completing?",
"options": [
"Preparing the surfactant aqueous phase",
"Dissolving the drug into the heated organic phase first",
"Performing subsequent low-temperature curing",
"Centrifugation of the final product"
],
"answer": "A"
},
{
"question_id": "0a47e359f54c4b79947deb29ed4c6a03",
"filename": "mid_124.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of subsequent processing is being performed on the sample at this stage?",
"options": [
"Directly perform copper ion adsorption testing",
"Transfer the sample to a high-temperature calcination step",
"Immediately add new reagents to initiate the reaction",
"Remove the residual liquid and prepare for subsequent drying"
],
"answer": "D"
},
{
"question_id": "3c6afbf1d15a4057b8dbf07d2097f782",
"filename": "mid_125.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental stage is this set of operations closest to?",
"options": [
"Product extraction and washing/separation",
"Pre-reaction reagent preparation and sealing",
"Recrystallization purification of solid samples",
"Post-reaction column chromatography collection"
],
"answer": "B"
},
{
"question_id": "de8313caaae942289c4928030e81cb96",
"filename": "mid_126.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage are these operations closest to?",
"options": [
"Final drying and weighing of the product",
"Column chromatography purification of the crude product",
"Pre-treatment of the reaction system and liquid–liquid separation",
"Spotting and plate development preparation before thin-layer chromatography"
],
"answer": "C"
},
{
"question_id": "1387eeb8dfc0465e931049a72745d2f0",
"filename": "mid_127.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental subtask is this set of operations closest to completing?",
"options": [
"Remove the solvent from the reaction system and obtain the crude product",
"Further purify the product and separate its components",
"Transfer the sample into the reaction vessel and begin heating",
"Perform quantitative analysis of the final product and record the results"
],
"answer": "A"
},
{
"question_id": "e9dd27decb8d4311b6c92840f1f97f38",
"filename": "mid_128.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental task is this set of operations primarily completing?",
"options": [
"Heat the reaction system to promote further reaction",
"Remove small-molecule impurities in the supernatant by washing",
"Concentrate the sample and recover the target component",
"Transfer the sample to a new reaction vessel to continue incubation"
],
"answer": "C"
},
{
"question_id": "e0ec734e841b459399715a13e65a2762",
"filename": "mid_129.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental task are these operations closest to completing?",
"options": [
"Subject the sample to high-temperature conditions for conversion",
"Perform acid washing and purification of the treated solid",
"Transfer the final product into a storage container for later use",
"Thoroughly pulverize and homogenize the starting material to prepare for subsequent processing"
],
"answer": "D"
},
{
"question_id": "36713eb1ecdd4639bda1c3f3a9796e14",
"filename": "mid_130.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage is this set of operations closest to completing?",
"options": [
"Heating initiation of the reaction system",
"Sample pretreatment and cooling/solidification",
"Washing and recrystallization of the product",
"Final data recording and result interpretation"
],
"answer": "B"
},
{
"question_id": "09cfdba27edb44f38d8d1d4494a1d12d",
"filename": "mid_131.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage are these operations closest to?",
"options": [
"Volumetric adjustment and filtration before chromatographic injection",
"Interpretation of results after instrument operation",
"Phase separation and collection during sample pretreatment",
"Elution and recovery from a solid-phase extraction column"
],
"answer": "C"
},
{
"question_id": "13b85836e9824f69a999032f2548531c",
"filename": "mid_132.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which step are these operations closest to?",
"options": [
"Separate the product from impurities",
"Allow the system to stabilize protected from light",
"Use light to trigger a surface deposition reaction",
"Disperse and resuspend the final sample"
],
"answer": "A"
},
{
"question_id": "3c8af9d18fde4d69b1033b994f799142",
"filename": "mid_133.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental stage are these operations closest to?",
"options": [
"Pre-reaction reagent preparation and initiation",
"Quenching and phase separation after the reaction",
"Column chromatography purification of the product",
"Recrystallization purification of solid samples"
],
"answer": "B"
},
{
"question_id": "29a6c3aaeec3419cb01bf793c1e97555",
"filename": "mid_134.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this clip, the primary purpose of coating the chromatographic plate and storing it cold in the first half is closest to which type of pretreatment?",
"options": [
"Protecting and preserving the sample for subsequent separation analysis",
"Sterilization of the culture medium before inoculation",
"Provide heating for the color development reaction",
"Centrifugal concentration prior to cell collection"
],
"answer": "A"
},
{
"question_id": "506180c95c8e43538074147a876446e4",
"filename": "mid_135.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on the operations in this video clip, which type of experimental task is this step closest to?",
"options": [
"Isolate the target component from the mixture",
"Analysis of the product after purification",
"Quantitatively record radioactive signals",
"Reprepare the starting solution for subsequent reactions"
],
"answer": "A"
},
{
"question_id": "35f43342101b47028b5a261e8b6684cd",
"filename": "mid_136.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental task are these actions most likely performing?",
"options": [
"Perform phase separation of the reaction system and collect the target product",
"Disperse the solid sample into a suitable solvent for subsequent processing",
"Use heating to promote rapid conversion of the precursor into crystals",
"Dry the final product and weigh it for storage"
],
"answer": "B"
},
{
"question_id": "bb7274d99b7749a788f9018f0b89d7a9",
"filename": "mid_137.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental task are these actions most likely performing?",
"options": [
"Perform extraction and phase separation of the reaction solution",
"Wash and dry the product",
"Transfer the solid sample into a weighing container",
"Establish and adjust feed conditions for subsequent reactions"
],
"answer": "D"
},
{
"question_id": "5721dc69b276419aa206551464f080f6",
"filename": "mid_138.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which experimental subtask do these actions most closely correspond to?",
"options": [
"Pre-treat and remove solid impurities",
"Separate and purify the crude product",
"Introduce reagents into the reaction system and establish an inert atmosphere",
"Dry and weigh the final product"
],
"answer": "C"
},
{
"question_id": "a5f7a011c8304ec6852bdb0dc4760946",
"filename": "mid_139.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which experimental subtask are these actions most closely completing?",
"options": [
"Evenly spread the polymer precursor solution onto the substrate",
"Pre-treat the surface for subsequent film formation",
"Peel the formed thin film off the substrate",
"Heat the sample to cure it"
],
"answer": "A"
},
{
"question_id": "d705b64eb6a94507bdbb3f880453a359",
"filename": "mid_140.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on the operations in this video clip, which type of experimental task is this step most similar to?",
"options": [
"Clean and inspect the instrument tubing",
"Digest the sample and transfer it into an analysis container",
"Prepare a series of low-concentration standards for subsequent measurements",
"Perform data fitting and calculations on the measurement results"
],
"answer": "C"
},
{
"question_id": "3629c0f18eb047ec8121c35333c0c97a",
"filename": "mid_141.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental subtask are these actions primarily performing?",
"options": [
"Perform final structural characterization of the product",
"Pre-activate the raw materials",
"Heat the system to promote the reaction",
"Perform post-treatment purification of the reaction mixture"
],
"answer": "D"
},
{
"question_id": "ecee05630fd14e408f191e8447d17f12",
"filename": "mid_142.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which type of experimental task are these operations most likely performing?",
"options": [
"Centrifuging samples for phase separation",
"Transferring the product to a storage container",
"Refluxing the reaction mixture",
"Preparing thin specimens for microscopic observation"
],
"answer": "D"
},
{
"question_id": "ec3835e9d96d4e8380e65bdc84951804",
"filename": "mid_143.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage in the workflow are these operations closest to?",
"options": [
"Collecting fractions after chromatographic separation",
"Interpreting mass spectrometry results",
"Cleaning and maintenance after instrument shutdown",
"Sample preprocessing and clarification"
],
"answer": "D"
},
{
"question_id": "be976e0b606f4fbba4e59f96c4a73c04",
"filename": "mid_144.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which preparatory stage are these operations closest to?",
"options": [
"Loading the sample into and connecting it to downstream detection equipment",
"Sample preprocessing and impurity removal",
"Initiating a crystallization reaction",
"Imaging and acquiring results"
],
"answer": "A"
},
{
"question_id": "7912f4e096d24c498a64e2de69e6564b",
"filename": "mid_145.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which experimental step are these operations closest to?",
"options": [
"Exposing the system to air after reaction completion",
"Transferring the reaction mixture while maintaining an inert atmosphere",
"Adding new reagents to the system",
"Extracting and washing to separate the product"
],
"answer": "B"
},
{
"question_id": "f462ad554401422a985dcba57fe4852d",
"filename": "mid_146.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage of the experimental process are these operations closest to?",
"options": [
"Sample preprocessing and surface cleaning",
"Loading and positioning samples prior to deposition",
"Post-growth annealing control of thin films",
"Encapsulation and storage prior to final characterization"
],
"answer": "B"
},
{
"question_id": "5c033cc7d80e491285991dbe71638090",
"filename": "mid_147.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which step are these operations primarily preparing for?",
"options": [
"Pre-mixing and temporary storage of samples",
"Dispensing samples into the reaction plate",
"Reading signals from the plate and recording results",
"Washing and reusing laboratory equipment"
],
"answer": "B"
},
{
"question_id": "2e3d2845b92a4e83a8ecfd68c0790034",
"filename": "mid_148.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which category of experimental subtask are the current operations closest to?",
"options": [
"Weighing materials and preparing solutions",
"Post-reaction workup and transfer for purification",
"Heating the reaction and starting stirring",
"Drying the product and final collection"
],
"answer": "B"
},
{
"question_id": "8e5a64fc46334f32921c861011040fc3",
"filename": "mid_149.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which stage of the experimental procedure are the current operations closest to?",
"options": [
"Sample pretreatment and surface cleaning",
"Preparation and mixing of the reaction system",
"Separation and purification of the product",
"Microscopic characterization of the final structure"
],
"answer": "A"
},
{
"question_id": "73d21ad0b41f4cbb8aec6435b55d764a",
"filename": "mid_150.mp4",
"question_type": "Mid-Video Task-Step Reasoning",
"question": "Based on this video clip, which step are the current operations closest to completing?",
"options": [
"Dispense reaction components into multiple reaction vessels",
"Perform a continuous reaction on the prepared system to form the target polymer",
"Transfer the reaction mixture to downstream purification equipment",
"Use washing steps to remove unreacted small-molecule impurities"
],
"answer": "B"
}
]
|