| [ |
| { |
| "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" |
| } |
| ] |
|
|
