<!-- //     { q: "What is the magnitude of taper of keys?", options: ["1:10", "1:500"], answer: 0 },
        //     { q: "The short dashed medium line is used for:", options: ["Centre line", "Hidden outlines and edges"], answer: 1 },
        //     { q: "A job costing system accumulates the following information:", options: ["Direct labour and overhead", "Direct material and overhead"], answer: 1 },
        //     { q: "Individual stock ledger card shall be updated:", options: ["Every month", "Every time part is issued or received"], answer: 1 },
        //     { q: "Unit “Pound” is the unit to measure:", options: ["Time", "Weight"], answer: 1 },
        //     { q: "The commonly used material for the insulator of spark plug is:", options: ["Bakelite", "Asbestos"], answer: 1 },
        //     { q: "Which of the following statements is false?", options: ["Cutting fluid should be acidic in nature", "Cutting fluid should be non-corrosive"], answer: 0 },
        //     { q: "Predictive maintenance involves:", options: ["Performing maintenance in predictive manner", "Performing maintenance using expert methods"], answer: 0 },
        //     { q: "Facing is an operation of:", options: ["Beveling the extreme end of a workpiece", "Machining ends of workpiece to produce flat surface"], answer: 1 },
        //     { q: "Segmental chips are formed during machining of:", options: ["Mild steel", "Cast iron"], answer: 1 },
        //     { q: "Brazing is the joining of metals:", options: ["Without melting the base metal", "Both A and B"], answer: 1 },
        //     { q: "Function of cutting fluid is", options: ["Lubricating the cutting process", "All of the above"], answer: 1 },
        //     { q: "Which of the following is not a cutting fluid?", options: ["Mineral oil", "Gasoline"], answer: 1 },
        //     { q: "Arc welding मा कुन प्रकारको Electrode Coating Material हो?", options: ["Flux", "Slag"], answer: 0 },
        //     { q: "Excavator को हाइड्रोलिक खोच खनेर गर्ने कार्यमा कुन प्रकारको वेल्डिङ प्रयोग गरिन्छ?", options: ["Gas Welding", "Arc Welding"], answer: 1 },
        //     { q: "निम्नमध्ये कुन Personal safety device हो?", options: ["गलबन्दी", "जुत्ता"], answer: 1 },
        //     { q: "Metal plate मा चाल गर्न प्रयोग गरिने उपकरण कुन हो?", options: ["ब्रश", "ग्राफाइट पेन्सिल"], answer: 1 },
        //     { q: "गाडीको कुन टुल हुन्छ?", options: ["टप्स", "स्प्यानर"], answer: 1 },
        //     { q: "कुन उपकरण Welding tools मा पर्दैन?", options: ["Electrode", "Radiator"], answer: 1 },
        //     { q: "The edge of sheet metal made by folding is called", options: ["hem", "seam"], answer: 1 },
        //     { q: "TIG Welding मा कुन ग्यास प्रयोग हुन्छ?", options: ["हाइड्रोजन र अक्सिजन", "आर्गन र हाइड्रोजन"], answer: 1 },
        //     { q: "Radiator is usually made of:", options: ["Aluminium", "Copper"], answer: 1 },
        //     { q: "Specific gravity of a battery is checked by:", options: ["Manometer", "Hydrometer"], answer: 1 },
        //     { q: "Tool used to measure valve tappet clearance:", options: ["Vernier caliper", "Feeler gauge"], answer: 1 },
        //     { q: "Fast moving parts shall be stored:", options: ["At the ground level", "At the convenient height"], answer: 1 },
        //     { q: "Goods transferred from another office shall have:", options: ["Transfer form", "Requisition form"], answer: 1 },
        //     { q: "A fuel tank of wheel loader has:", options: ["One opening – outlet", "Two opening – outlet and inlet"], answer: 1 },
        //     { q: "Change of engine oil is done:", options: ["When oil filter is changed", "When engine oil level is low"], answer: 1 },
        //     { q: "The ply rating of an earth-moving equipment’s tyre gives:", options: ["Diameter of the rim", "Number of plies in the tyre"], answer: 1 },
        //     { q: "Starter motor runs the flywheel of an engine using:", options: ["Chain drive", "Gear drive"], answer: 1 },
        //     { q: "The facing is an operation of:", options: ["Beveling the extreme end", "Reducing the diameter of a workpiece"], answer: 1 },
        //     { q: "During scheduled maintenance, dry type air filter is cleaned by:", options: ["By dipping it in a detergent solution", "Blowing air from inside of the filter"], answer: 1 },
        //     { q: "End play of gears and oil pump may be checked by using:", options: ["Vernier caliper and feeler gauge", "Straight edge and feeler gauge"], answer: 1 },
        //     { q: "A maintenance-free battery:", options: ["Has lead-antimony plate grid", "Does not contain water"], answer: 1 },
        //     { q: "The warpage of cylinder head is checked with a:", options: ["Metal rule", "Dial gauge"], answer: 1 },
        //     { q: "बिट ‘Bit’ बनाउन कुन धातु प्रयोग गरिन्छ?", options: ["Tin", "Copper"], answer: 1 },
        //     { q: "तस्बिरमा देखिएको उपकरण कुन किसिमको उपकरण हो?", options: ["टायर हब", "रिङ्ग स्प्यानर (Ring Spanner)"], answer: 1 },
        //     { q: "FPS प्रणाली अनुसार लामखुट्टेगाडि … भनिन्छ", options: ["इन्च", "यार्ड"], answer: 0 },
        //     { q: "निम्नमध्ये कुन वेल्डिंग उपकरण इलेक्ट्रोड हटाउन प्रयोग गरिन्छ?", options: ["चिपिङ हथौडा", "ग्यास वेल्डर"], answer: 0 },
        //     { q: "In arc welding with DC current, greater heat is generated at", options: ["Positive pole of arc", "Negative pole of arc"], answer: 0 },
        //     { q: "तलमध्ये कुन वेल्डिंग टूल हो?", options: ["Electrode", "Radiator"], answer: 0 },
        //     { q: "The edge of sheet metal made by folding is called", options: ["Hem", "All of the above"], answer: 0 },
        //     { q: "Which equipment is used to create flat surface before asphalt pavement in the road?", options: ["Grader", "Roller"], answer: 0 },
        //     { q: "TIG Welding मा कुन ग्यास प्रयोग हुन्छ?", options: ["Argon and Helium", "CO₂ and H₂"], answer: 0 },
        //     { q: "स्क्रु फल्ने बेलामा प्रयोग गरिने औजार कुन हो?", options: ["स्क्रु ड्राइभर", "फिलर गेज"], answer: 0 },
        //     { q: "सवारी साधनको जानकारी Vehicle Operation log sheet मा लेखिने विवरण कुन हो?", options: ["गाडी निस्केको समय, गन्तब्य, गाडीको टंकी, odometer रीडिङ", "गाडी निस्केको समय, गाडी फर्केको समय, गाडीको गन्तब्य, गाडीको टंकी"], answer: 0 },
        //     { q: "Which of the following is not a cutting fluid?", options: ["Gasoline", "Mineral oil"], answer: 0 },
        //     { q: "Function of cutting fluid is", options: ["All of the above", "Lubricating the cutting process"], answer: 0 },
        //     { q: "What is the accuracy of metric outside micrometer?", options: ["0.001 mm", "0.02 mm"], answer: 0 },
        //     { q: "Which of the following gauge is used to measure diameter of shaft?", options: ["Ring gauge", "Snap gauge"], answer: 0 },
        //     { q: "The instrument used to measure external and internal diameter of shafts is:", options: ["Inside micrometer", "Outside micrometer"], answer: 0 },
        //     { q: "A …… is used for holding and rotating the workpiece in a lathe:", options: ["Centers", "Mandrel"], answer: 0 },
        //     { q: "What is the magnitude of taper of keys?", options: ["1:10", "1:500"], answer: 0 },
        //     { q: "The short dashed medium line is used for:", options: ["Hidden outlines and edges", "Centre line"], answer: 0 },
        //     { q: "A feeler gauge is used to measure:", options: ["Space (gap) between two surfaces", "Thickness of a plate"], answer: 0 },
        //     { q: "The accuracy of micrometer, caliper, and dial indicator can be checked by:", options: ["Slip gauge", "Feeler gauge"], answer: 0 },
        //     { q: "A twist drill is specified by:", options: ["A number specifying hole size", "An alphabet specifying hole size"], answer: 0 },
        //     { q: "फिलर गेज कुन कार्यका लागि प्रयोग गरिन्छ?", options: ["क्लियरेन्स मापन", "ग्याप मापन"], answer: 0 },
        //     { q: "The feeler gauge is used to check", options: ["clearance between two mating surface", "external diameter"], answer: 0 },
        //     { q: "Which of the following is not one of the fundamental quantities in physics?", options: ["Volume", "Length"], answer: 0 },
        //     { q: "_____ is the Non-SI unit accepted for use with the SI units.", options: ["Henry", "Gray"], answer: 0 },
        //     { q: "The process extensively used for making bolts and units is:", options: ["Cold heading", "Cold peening"], answer: 0 },
        //     { q: "Grinding is a ___________ operation.", options: ["Surface finishing", "Facing"], answer: 0 },
        //     { q: "पिच, पाउण्ड, सिष्टम कुनसँग सम्बन्धित छ?", options: ["Free, power system", "Fluid system"], answer: 0 },
        //     { q: "Diameter नाप्ने tool कुन हो?", options: ["Vernier calliper", "Micrometer"], answer: 0 },
        //     { q: "CNC मेशिनमा कुन प्रक्रिया हुँदैन?", options: ["चिप हटाउने क्रिया हुँदैन", "लम्बाइ नाप"], answer: 0 },
        //     { q: "Lathe मेशिन प्रयोग गरिन्छ:", options: ["घुमाउने कार्यका लागि", "Milling कार्यका लागि"], answer: 0 },
        //     { q: "Surface finish is more affected by:", options: ["Cutting speed", "Depth of cut"], answer: 0 },
        //     { q: "The commonly used material for the insulator of spark plug is:", options: ["Asbestos", "Bakelite"], answer: 0 },
        //     { q: "The size of 10mm digital spanner is represented by:", options: ["M10", "M*10"], answer: 0 },
        //     { q: "Which of the following is not part of a shaper?", options: ["Taper box", "Table"], answer: 0 },
        //     { q: "Which of the following gauges is used to test accuracy of holes?", options: ["Plug gauge", "Ring gauge"], answer: 0 },
        //     { q: "To take measurement of the height of store rack, you will use:", options: ["Try square", "Vernier caliper"], answer: 0 },
        //     { q: "Which of the following operations can’t be performed on the lathe?", options: ["Drilling", "Chamfering"], answer: 0 },
        //     { q: "Lathe spindle has:", options: ["External threads", "Internal threads"], answer: 0 },
        //     { q: "A cylinder is drilled with two holes of same size top to bottom. What is the minimum number of hidden lines seen from front view?", options: ["2", "0"], answer: 0 },
        //     { q: "The turning process is done by:", options: ["Lathe machine", "Drilling machine"], answer: 0 },
        //     { q: "Multiple teeth cutter is used in:", options: ["Milling machine", "Planer"], answer: 0 },
        //     { q: "If the workpiece is stationary, the tool reciprocates and cuts in one direction only. Such operation is called:", options: ["Shaping", "Slotting"], answer: 0 },
        //     { q: "Drilling machines are employed for producing:", options: ["Circular holes", "Hexagonal holes"], answer: 0 }
        // ]; -->

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    <div class="quiz-container">
        <h1>Logsewa Workshop Practice Quiz</h1>
        <div class="quiz-header">
            <div class="timer" id="timer">Time: 00:00</div>
            <div class="score" id="current-score">Score: 0/40</div>
        </div>
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                            <th>Your Answer</th>
                            <th>Correct Answer</th>
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                            <th>Explanation</th>
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  // 1.1 Basic Knowledge of Measuring Instruments
  {
    q: "Which tool is used to measure valve tappet clearance?",
    options: ["Vernier caliper", "Feeler gauge", "Micrometer", "Dial indicator"],
    answer: 1,
    explanation: "A feeler gauge measures small gaps, such as valve tappet clearance, with high precision."
  },
  {
    q: "How is end play of gears and oil pump typically checked?",
    options: ["Vernier caliper and feeler gauge", "Straight edge and feeler gauge", "Micrometer and dial gauge", "Slip gauge and ruler"],
    answer: 1,
    explanation: "A straight edge and feeler gauge are used to measure end play by checking gaps."
  },
  {
    q: "What is a feeler gauge used to measure?",
    options: ["Gap between two surfaces", "Thickness of a plate", "Diameter of a shaft", "Length of a rod"],
    answer: 0,
    explanation: "Feeler gauges measure small clearances or gaps between two surfaces."
  },
  {
    q: "Which tool checks the accuracy of micrometers, calipers, and dial indicators?",
    options: ["Slip gauge", "Feeler gauge", "Ring gauge", "Straight edge"],
    answer: 0,
    explanation: "Slip gauges provide precise reference measurements to calibrate instruments."
  },
  {
    q: "What is the accuracy of a metric outside micrometer?",
    options: ["0.001 mm", "0.02 mm", "0.1 mm", "1 mm"],
    answer: 0,
    explanation: "Metric outside micrometers typically have an accuracy of 0.001 mm for precise measurements."
  },
  {
    q: "Which gauge is used to measure the diameter of a shaft?",
    options: ["Ring gauge", "Snap gauge", "Plug gauge", "Feeler gauge"],
    answer: 0,
    explanation: "Ring gauges are used to check the external diameter of shafts with high accuracy."
  },
  {
    q: "Which instrument measures both external and internal diameters of shafts?",
    options: ["Outside micrometer", "Vernier caliper", "Ring gauge", "Dial indicator"],
    answer: 1,
    explanation: "Vernier calipers are versatile, measuring both internal and external diameters."
  },
  {
    q: "फिलर गेज कुन कार्यका लागि प्रयोग गरिन्छ? (What is a feeler gauge used for?)",
    options: ["क्लियरेन्स मापन (Measuring clearance)", "व्यास मापन (Measuring diameter)", "लम्बाइ मापन (Measuring length)", "कोण मापन (Measuring angle)"],
    answer: 0,
    explanation: "फिलर गेजले दुई सतह बीचको क्लियरेन्स मापन गर्छ। (Feeler gauges measure clearances between mating surfaces.)"
  },
  {
    q: "What does a feeler gauge check?",
    options: ["Clearance between two mating surfaces", "External diameter", "Surface roughness", "Material thickness"],
    answer: 0,
    explanation: "Feeler gauges are used to measure gaps between surfaces, such as in engine components."
  },
  {
    q: "Diameter नाप्ने उपकरण कुन हो? (Which tool is used to measure diameter?)",
    options: ["Vernier caliper", "Feeler gauge", "Try square", "Protractor"],
    answer: 0,
    explanation: "Vernier calipers are versatile for measuring internal and external diameters."
  },
  {
    q: "Which tool is used to measure the height of a store rack?",
    options: ["Vernier caliper", "Try square", "Tape measure", "Feeler gauge"],
    answer: 2,
    explanation: "A tape measure is suitable for measuring larger dimensions like the height of a store rack."
  },
  {
    q: "Which gauge is used to test the accuracy of holes?",
    options: ["Plug gauge", "Ring gauge", "Snap gauge", "Feeler gauge"],
    answer: 0,
    explanation: "Plug gauges check the accuracy of internal hole diameters."
  },

  // 1.2 Basic Knowledge of Metric, FPS, and SI Unit
  {
    q: "What does the unit 'Pound' measure?",
    options: ["Time", "Weight", "Length", "Temperature"],
    answer: 1,
    explanation: "Pound is a unit of weight in the FPS (Foot-Pound-Second) system."
  },
  {
    q: "FPS प्रणालीमा लामखुट्टे गाडीको मापनलाई के भनिन्छ? (What is the unit for measuring small lengths like a mosquito net in the FPS system?)",
    options: ["इन्च (Inch)", "यार्ड (Yard)", "फुट (Foot)", "माइल (Mile)"],
    answer: 0,
    explanation: "In the FPS system, small lengths like a mosquito net are measured in inches."
  },
  {
    q: "Which is not a fundamental quantity in physics?",
    options: ["Volume", "Length", "Mass", "Time"],
    answer: 0,
    explanation: "Volume is a derived quantity, while length, mass, and time are fundamental quantities."
  },
  {
    q: "Which is a non-SI unit accepted for use with SI units?",
    options: ["Liter", "Gray", "Pascal", "Joule"],
    answer: 0,
    explanation: "Liter is a non-SI unit accepted for volume measurement alongside SI units."
  },

  // 1.3 Basic Knowledge of Hand Tools and Their Applications
  {
    q: "गाडीको लागि कुन टूल प्रयोग गरिन्छ? (Which tool is used for vehicles?)",
    options: ["टप्स (Taps)", "स्प्यानर (Spanner)", "फाइल (File)", "ह्यामर (Hammer)"],
    answer: 1,
    explanation: "स्प्यानरले गाडीमा नट र बोल्ट कस्न वा खोल्न प्रयोग गरिन्छ। (Spanners are used to tighten or loosen nuts and bolts in vehicles.)"
  },
  {
    q: "The size of a 10mm digital spanner is represented as:",
    options: ["M10", "M*10", "10M", "MM10"],
    answer: 0,
    explanation: "M10 denotes a metric spanner size of 10 mm for bolts or nuts."
  },
  {
    q: "तस्बिरमा देखिएको उपकरण कुन हो? (Which tool is shown in the image?)",
    options: ["टायर हब (Tire hub)", "रिङ स्प्यानर (Ring spanner)", "स्क्रू ड्राइभर (Screwdriver)", "प्लायर (Pliers)"],
    answer: 1,
    explanation: "रिङ स्प्यानर नट र बोल्ट घुमाउन प्रयोग हुन्छ। (A ring spanner is a hand tool for turning nuts and bolts.)"
  },
  {
    q: "स्क्रू फाल्ने बेलामा कुन औजार प्रयोग गरिन्छ? (Which tool is used to drive screws?)",
    options: ["स्क्रू ड्राइभर (Screwdriver)", "फिलर गेज (Feeler gauge)", "स्प्यानर (Spanner)", "ह्यामर (Hammer)"],
    answer: 0,
    explanation: "स्क्रू ड्राइभरले स्क्रू हटाउन वा राख्न प्रयोग गरिन्छ। (A screwdriver is used to drive or remove screws.)"
  },

  // 1.4 Basic Knowledge of Lathe, Milling, Shaper, Grinding, and Drilling Machine
  {
    q: "What is facing in machining?",
    options: ["Beveling the workpiece end", "Producing a flat surface on workpiece ends", "Cutting threads", "Drilling holes"],
    answer: 1,
    explanation: "Facing creates a flat surface on the ends of a workpiece, typically on a lathe."
  },
  {
    q: "What does the facing operation achieve?",
    options: ["Beveling the end", "Flat surface on workpiece ends", "Cylindrical shaping", "Surface texturing"],
    answer: 1,
    explanation: "Facing machines the ends of a workpiece to produce a smooth, flat surface."
  },
  {
    q: "What is used to hold and rotate the workpiece in a lathe?",
    options: ["Centers", "Mandrel", "Collet", "Tool post"],
    answer: 0,
    explanation: "Centers hold and rotate the workpiece in a lathe for turning operations."
  },
  {
    q: "Lathe मेशिन कुन कार्यका लागि प्रयोग गरिन्छ? (What is a lathe machine used for?)",
    options: ["घुमाउने कार्य (Turning operations)", "मिलिंग कार्य (Milling operations)", "ग्राइन्डिंग कार्य (Grinding operations)", "ड्रिलिंग कार्य (Drilling operations)"],
    answer: 0,
    explanation: "लेथ मेसिनले घुमाउने कार्यमार्फत वस्तुलाई आकार दिन्छ। (Lathes are used for turning operations to shape rotating workpieces.)"
  },
  {
    q: "Which is not a part of a shaper machine?",
    options: ["Taper box", "Table", "Ram", "Tool head"],
    answer: 0,
    explanation: "A taper box is not a standard component of a shaper, which includes a table, ram, and tool head."
  },
  {
    q: "Which operation cannot be performed on a lathe?",
    options: ["Drilling", "Milling", "Turning", "Thread cutting"],
    answer: 1,
    explanation: "Milling requires a milling machine, while drilling, turning, and thread cutting can be done on a lathe."
  },
  {
    q: "What type of threads does a lathe spindle have?",
    options: ["External threads", "Internal threads", "No threads", "Tapered threads"],
    answer: 0,
    explanation: "Lathe spindles typically have external threads for mounting chucks or faceplates."
  },
  {
    q: "Which machine is used for the turning process?",
    options: ["Lathe machine", "Drilling machine", "Milling machine", "Grinding machine"],
    answer: 0,
    explanation: "Turning is performed on a lathe to shape cylindrical workpieces."
  },
  {
    q: "Which machine uses a multiple teeth cutter?",
    options: ["Milling machine", "Planer", "Shaper", "Lathe"],
    answer: 0,
    explanation: "Milling machines use multi-tooth cutters for material removal across various surfaces."
  },
  {
    q: "What is the operation called when the workpiece is stationary and the tool reciprocates?",
    options: ["Shaping", "Slotting", "Turning", "Milling"],
    answer: 0,
    explanation: "Shaping involves a reciprocating tool cutting a stationary workpiece on a shaper machine."
  },
  {
    q: "What does a drilling machine produce?",
    options: ["Circular holes", "Hexagonal holes", "Square holes", "Irregular slots"],
    answer: 0,
    explanation: "Drilling machines create circular holes in workpieces using drill bits."
  },
  {
    q: "What type of operation is grinding?",
    options: ["Surface finishing", "Facing", "Drilling", "Turning"],
    answer: 0,
    explanation: "Grinding is a surface finishing operation for achieving precision and smoothness."
  },
  {
    q: "How is a twist drill specified?",
    options: ["By a number indicating hole size", "By an alphabet indicating hole size", "By color coding", "By shank length"],
    answer: 0,
    explanation: "Twist drills are specified by numbers or sizes indicating the hole diameter they produce."
  },

  // 1.5 Basic Knowledge of Arc Welding and Oxy-Acetylene Welding
  {
    q: "What is the electrode coating material in arc welding?",
    options: ["Flux", "Slag", "Solder", "Paint"],
    answer: 0,
    explanation: "Flux coats the electrode to protect the weld pool from contamination and stabilize the arc."
  },
  {
    q: "Which welding is used for hydraulic excavator arm fabrication?",
    options: ["Gas welding", "Arc welding", "TIG welding", "Spot welding"],
    answer: 1,
    explanation: "Arc welding is robust and suitable for heavy-duty applications like excavator arm fabrication."
  },
  {
    q: "Which is not a welding tool?",
    options: ["Electrode", "Radiator", "Chipping hammer", "Welding torch"],
    answer: 1,
    explanation: "Radiators are not used in welding; electrodes, chipping hammers, and torches are essential."
  },
  {
    q: "Which gas is used in TIG welding?",
    options: ["Argon and helium", "CO₂ and H₂", "Oxygen and acetylene", "Nitrogen and CO₂"],
    answer: 0,
    explanation: "Argon and helium are inert gases used as shielding gases in TIG welding."
  },
  {
    q: "Which tool is used to remove slag in welding?",
    options: ["Chipping hammer", "Gas welder", "Wire brush", "Screwdriver"],
    answer: 0,
    explanation: "A chipping hammer removes slag from welds to ensure a clean surface."
  },
  {
    q: "In arc welding with DC current, where is greater heat generated?",
    options: ["Positive pole (anode)", "Negative pole (cathode)", "Workpiece only", "Electrode tip only"],
    answer: 0,
    explanation: "In DC arc welding, the positive pole (anode) generates more heat due to electron flow."
  },
  {
    q: "Which is a welding tool?",
    options: ["Electrode", "Radiator", "Fuel pump", "Battery"],
    answer: 0,
    explanation: "Electrodes are used in arc welding to create the weld, unlike radiators or fuel pumps."
  },

  // 1.6 Basic Knowledge of Power Transmission in Workshop
  {
    q: "How does a starter motor run the flywheel of an engine?",
    options: ["Chain drive", "Gear drive", "Belt drive", "Shaft drive"],
    answer: 1,
    explanation: "A gear drive connects the starter motor to the flywheel for engine cranking."
  },


                       {
        q: "Muffler (साइलेन्सर) को मुख्य काम के हो? (What is the main function of a muffler?)",
        options: ["इञ्जिनको ताप कम गर्ने (Reduce engine heat)", "इञ्जिनको ध्वनि नियन्त्रण गर्ने (Control engine noise)", "इन्धन बचत गर्ने (Save fuel)", "इञ्जिनको शक्ति बढाउने (Increase engine power)"],
        answer: 1,
        explanation: "मफ्लरले इन्जिनको निकासको ध्वनि कम गर्छ। (The muffler reduces engine exhaust noise to acceptable levels.)"
    },
    {
        q: "The feeler gauge is used to check:",
        options: ["Internal diameter", "Clearance between mating surfaces", "Surface roughness", "Thread pitch"],
        answer: 1,
        explanation: "Feeler gauges measure small gaps, such as valve clearances, between mating surfaces."
    },
    {
        q: "What is the function of cutting fluids in machining?",
        options: ["Increase friction", "Reduce friction and cool the workpiece", "Increase tool hardness", "Prevent rust only"],
        answer: 1,
        explanation: "Cutting fluids lubricate and cool the tool and workpiece, reducing friction and heat."
    },
    {
        q: "Which is NOT a cutting fluid?",
        options: ["Soluble oil", "Gasoline", "Mineral oil", "Water-based coolant"],
        answer: 1,
        explanation: "Gasoline is not a cutting fluid; soluble oils, mineral oils, and water-based coolants are used for cooling and lubrication."
    },
    {
        q: "Which component in a steam engine facilitates piston reciprocation?",
        options: ["Crankshaft", "Crosshead", "Flywheel", "Governor"],
        answer: 1,
        explanation: "The crosshead guides the piston’s linear motion, connecting it to the connecting rod."
    },
    {
        q: "Which of the following is a permanent fastening?",
        options: ["Cotter pin", "Rivet", "Nut and bolt", "Screw"],
        answer: 1,
        explanation: "Rivets create permanent joints, unlike cotter pins, nuts, or screws, which are removable."
    },
    {
        q: "Why is the handle of a soldering iron made of plastic?",
        options: ["To conduct heat", "To insulate heat", "To increase weight", "To improve grip only"],
        answer: 1,
        explanation: "Plastic is a heat insulator, preventing burns during soldering."
    },
    {
        q: "Which material exhibits magnetism?",
        options: ["Plastic", "Iron", "Aluminum", "Copper"],
        answer: 1,
        explanation: "Iron is ferromagnetic and exhibits magnetism, unlike plastic, aluminum, or copper."
    },
    {
        q: "Which power plant is free from environmental problems?",
        options: ["Thermal power plant", "Geothermal power plant", "Coal power plant", "Diesel power plant"],
        answer: 1,
        explanation: "Geothermal plants have minimal environmental impact compared to thermal, coal, or diesel plants."
    },
    {
        q: "In a steam power plant, what is used as the prime mover?",
        options: ["I.C. engine", "Turbine", "Electric motor", "Hydraulic pump"],
        answer: 1,
        explanation: "Turbines convert steam energy into mechanical work in steam power plants."
    },
    {
        q: "If one V-belt in a multiple V-belt drive system breaks, what is required?",
        options: ["Replace only the broken belt", "Replace all belts", "Adjust tension only", "Lubricate the pulley"],
        answer: 1,
        explanation: "All belts should be replaced to ensure uniform tension and performance."
    },
    {
        q: "1 horsepower (HP) is equivalent to:",
        options: ["467 watts", "746 watts", "1000 watts", "500 watts"],
        answer: 1,
        explanation: "1 HP equals 746 watts, a standard unit of power."
    },
    {
        q: "V-belt drives are generally used for:",
        options: ["Low-speed applications", "Power transmission", "Cooling systems", "Fuel delivery"],
        answer: 1,
        explanation: "V-belts efficiently transmit power in automotive and industrial applications."
    },
    {
        q: "Which turbine is suited for high-head installations?",
        options: ["Kaplan turbine", "Pelton wheel", "Francis turbine", "Propeller turbine"],
        answer: 1,
        explanation: "Pelton wheels are designed for high-head, low-flow conditions."
    },
    {
        q: "What is the unit of speed in aeronautics?",
        options: ["Km/hr", "Knot", "Meter/sec", "Mile/hr"],
        answer: 1,
        explanation: "Knots (nautical miles per hour) are used to measure speed in aeronautics."
    },
    {
        q: "What is the metric system unit for length?",
        options: ["Foot", "Meter", "Inch", "Yard"],
        answer: 1,
        explanation: "The meter is the SI unit for length in the metric system."
    },
    {
        q: "What can a vernier caliper measure?",
        options: ["Height only", "Internal and external dimensions", "Weight", "Surface area"],
        answer: 1,
        explanation: "Vernier calipers measure both internal and external dimensions with precision."
    },
    {
        q: "Which part is NOT related to a shaper machine?",
        options: ["Tool post", "Tailstock", "Ram", "Clapper box"],
        answer: 1,
        explanation: "Tailstock is part of a lathe, not a shaper machine."
    },
    {
        q: "During filing, metal is cut on the:",
        options: ["Return stroke", "Forward stroke", "Side stroke", "Circular stroke"],
        answer: 1,
        explanation: "Filing removes material during the forward stroke, not the return stroke."
    },
    {
        q: "Which type of mirror is used in a motorcycle headlight?",
        options: ["Convex mirror", "Concave mirror", "Plane mirror", "Spherical mirror"],
        answer: 1,
        explanation: "Concave mirrors focus light to produce a strong beam in headlights."
    }

                    
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        }

        // Skip question
        function skipQuestion(questionIndex) {
            if (!skipped.includes(questions[questionIndex])) {
                skipped.push(questions[questionIndex]);
                userAnswers[questionIndex] = 'Skipped';
                const questionDiv = document.querySelector(`.question[data-index="${questionIndex}"]`);
                questionDiv.querySelectorAll('.options button').forEach(btn => btn.disabled = true);
                questionDiv.querySelector('.skip-button').disabled = true;
                questionDiv.querySelector('.explanation').style.display = 'block';
                saveProgress();
                const nextButton = quizEl.querySelector('.next-button');
                if (nextButton) {
                    nextButton.disabled = !areAllQuestionsAnsweredOnPage(
                        currentPage * QUESTIONS_PER_PAGE,
                        Math.min((currentPage + 1) * QUESTIONS_PER_PAGE, questions.length)
                    );
                }
            }
        }

        // Move to next page
        function nextPage() {
            if (skipped.length > 0 && currentPage * QUESTIONS_PER_PAGE >= questions.length) {
                showSkippedQuestions();
            } else {
                currentPage++;
                if (currentPage * QUESTIONS_PER_PAGE < questions.length) {
                    showQuestions(currentPage);
                } else if (skipped.length === 0) {
                    endQuiz();
                } else {
                    showSkippedQuestions();
                }
            }
        }

        // Show skipped questions
        function showSkippedQuestions() {
            questions.splice(0, questions.length, ...skipped);
            skipped = [];
            currentPage = 0;
            showQuestions(currentPage);
        }

        // End quiz and show results
        function endQuiz() {
            clearInterval(timerInterval);
            quizEl.innerHTML = '';
            scoreEl.textContent = `Final Score: ${score} out of ${questions.length} (${((score / questions.length) * 100).toFixed(2)}%)`;
            resultsEl.classList.remove('hidden');

            resultsBody.innerHTML = questions.map((q, i) => {
                const userAnswer = userAnswers[i] === null ? 'Not attempted' :
                                  userAnswers[i] === 'Skipped' ? 'Skipped' :
                                  userAnswers[i];
                const correctAnswer = q.options[q.answer];
                const status = userAnswers[i] === q.options[q.answer] ? 'Correct' :
                              userAnswers[i] === 'Skipped' ? 'Skipped' :
                              userAnswers[i] === null ? 'Not attempted' : 'Wrong';
                return `
                    <tr>
                        <td>${i + 1}. ${q.q}</td>
                        <td>${userAnswer}</td>
                        <td>${correctAnswer}</td>
                        <td class="${status.toLowerCase().replace(' ', '-')}">${status}</td>
                        <td class="explanation">${q.explanation}</td>
                    </tr>
                `;
            }).join('');

            localStorage.removeItem('quizProgressWorkshop');
        }

        // Restart quiz
        function restartQuiz() {
            clearProgress();
            resultsEl.classList.add('hidden');
            scoreEl.textContent = '';
            startTimer();
            showQuestions(currentPage);
            updateCurrentScore();
        }

        // Initialize quiz
        function initialize() {
            clearProgress(); // Reset all progress on page load
            startTimer();
            showQuestions(currentPage);
            updateCurrentScore();
        }

        // Start quiz on page load
        initialize();
    </script>
</body>
</html>