{
  "title": "Line Graphs (Data Handling) - Grade 5 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "📈 shows temperature: Mon=20°, Tue=22°, Wed=24°. What's the pattern?",
      "options": {
        "A": "Increasing",
        "B": "Decreasing",
        "C": "Same",
        "D": "Mixed"
      },
      "correct_answer": "A"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "Line graph points: (1,3), (2,5), (3,7). Next point if pattern continues?",
      "options": { "A": "(4,8)", "B": "(4,9)", "C": "(4,10)", "D": "(4,11)" },
      "correct_answer": "B"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "📉 shows scores: Game1=8, Game2=6, Game3=4. What's happening?",
      "options": {
        "A": "Increasing",
        "B": "Decreasing",
        "C": "Stable",
        "D": "Random"
      },
      "correct_answer": "B"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "Line connecting (1,2) to (2,4) to (3,6). What's the rule?",
      "options": {
        "A": "y = x + 1",
        "B": "y = 2x",
        "C": "y = 3x",
        "D": "y = x + 2"
      },
      "correct_answer": "B"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "📈 shows plant growth: Week1=2cm, Week2=4cm, Week3=6cm. Week4 prediction?",
      "options": { "A": "7cm", "B": "8cm", "C": "9cm", "D": "10cm" },
      "correct_answer": "B"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "Temperature graph: 8AM=15°, 10AM=18°, 12PM=21°. 2PM prediction?",
      "options": { "A": "22°", "B": "23°", "C": "24°", "D": "25°" },
      "correct_answer": "C"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "📉 shows money: Day1=₹50, Day2=₹40, Day3=₹30. Day4 prediction?",
      "options": { "A": "₹25", "B": "₹20", "C": "₹15", "D": "₹10" },
      "correct_answer": "B"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "Line points: (0,1), (1,3), (2,5). What is y when x=3?",
      "options": { "A": "6", "B": "7", "C": "8", "D": "9" },
      "correct_answer": "B"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "📈 shows readers: Jan=10, Feb=12, Mar=14. Increase per month?",
      "options": { "A": "1", "B": "2", "C": "3", "D": "4" },
      "correct_answer": "B"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "Graph drops from 15 to 12 to 9. Next value?",
      "options": { "A": "7", "B": "6", "C": "5", "D": "4" },
      "correct_answer": "B"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "📉 shows attendance: Mon=30, Tue=28, Wed=26. Decrease per day?",
      "options": { "A": "1", "B": "2", "C": "3", "D": "4" },
      "correct_answer": "B"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "Line through (2,4) and (4,8). What's the slope?",
      "options": { "A": "1", "B": "2", "C": "3", "D": "4" },
      "correct_answer": "B"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "📈 shows sales: Week1=5, Week2=8, Week3=11. Week4 prediction?",
      "options": { "A": "13", "B": "14", "C": "15", "D": "16" },
      "correct_answer": "B"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "Temperature changing: 6° → 9° → 12°. Next?",
      "options": { "A": "13°", "B": "14°", "C": "15°", "D": "16°" },
      "correct_answer": "C"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "📉 shows water: 100L → 90L → 80L. Next day?",
      "options": { "A": "75L", "B": "70L", "C": "65L", "D": "60L" },
      "correct_answer": "B"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "Line graph alternating: 5, 7, 5, 7. Next value?",
      "options": { "A": "5", "B": "6", "C": "7", "D": "8" },
      "correct_answer": "A"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "📈 shows distance: Hour1=5km, Hour2=10km, Hour3=15km. Hour4?",
      "options": { "A": "18km", "B": "19km", "C": "20km", "D": "21km" },
      "correct_answer": "C"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "Graph points: (0,0), (1,2), (2,4). What's the pattern?",
      "options": {
        "A": "y = x",
        "B": "y = 2x",
        "C": "y = x + 1",
        "D": "y = 3x"
      },
      "correct_answer": "B"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "📉 shows battery: 100% → 80% → 60%. Next hour?",
      "options": { "A": "50%", "B": "45%", "C": "40%", "D": "35%" },
      "correct_answer": "C"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "Line going up by 3 each time: Start=4, then 7, then 10. Next?",
      "options": { "A": "12", "B": "13", "C": "14", "D": "15" },
      "correct_answer": "B"
    },

    {
      "id": 21,
      "difficulty": "medium",
      "question": "📈 shows profit: Jan=₹100, Feb=₹120, Mar=₹140. If continues, May profit?",
      "options": { "A": "₹160", "B": "₹170", "C": "₹180", "D": "₹190" },
      "correct_answer": "C"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "Line graph with peaks: 3, 7, 5, 9, 7, ?. Next value?",
      "options": { "A": "9", "B": "10", "C": "11", "D": "12" },
      "correct_answer": "C"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "📉 then 📈: 10 → 8 → 6 → 8 → 10 → ?. Next?",
      "options": { "A": "12", "B": "13", "C": "14", "D": "15" },
      "correct_answer": "A"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "Two lines: Line A: (1,2)→(3,6); Line B: (1,1)→(3,5). Which steeper?",
      "options": {
        "A": "Line A",
        "B": "Line B",
        "C": "Same",
        "D": "Can't tell"
      },
      "correct_answer": "C"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "📈 shows population: Year1=1000, Year2=1100, Year3=1210. Pattern type?",
      "options": {
        "A": "+100 each",
        "B": "+10% each",
        "C": "×1.1 each",
        "D": "Both B & C"
      },
      "correct_answer": "D"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "Line crossing: At x=2, y=5; at x=5, y=11. What's increase per x?",
      "options": { "A": "1", "B": "2", "C": "3", "D": "4" },
      "correct_answer": "B"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "📉 shows temperature: 8AM=20°, 12PM=16°, 4PM=12°. 8PM prediction?",
      "options": { "A": "10°", "B": "9°", "C": "8°", "D": "7°" },
      "correct_answer": "C"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "Graph pattern: 2, 4, 8, 16, ?. Next value?",
      "options": { "A": "24", "B": "28", "C": "32", "D": "36" },
      "correct_answer": "C"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "📈 shows speed: Sec1=2m/s, Sec2=4m/s, Sec3=6m/s, Sec4=8m/s. Acceleration?",
      "options": { "A": "1 m/s²", "B": "2 m/s²", "C": "3 m/s²", "D": "4 m/s²" },
      "correct_answer": "B"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "Line with breaks: Data at 1,3,5,7 hours. What type graph?",
      "options": {
        "A": "Continuous",
        "B": "Discrete",
        "C": "Broken",
        "D": "Both B & C"
      },
      "correct_answer": "D"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "📉 then steady: 15 → 12 → 9 → 9 → 9 → ?. Next?",
      "options": { "A": "9", "B": "8", "C": "7", "D": "6" },
      "correct_answer": "A"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "Two datasets on same graph: Line A rises slowly, Line B rises fast. Which has greater rate?",
      "options": {
        "A": "Line A",
        "B": "Line B",
        "C": "Same",
        "D": "Can't tell"
      },
      "correct_answer": "B"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "📈 shows compound growth: Start=100, after 1=110, after 2=121. After 3?",
      "options": { "A": "131", "B": "132", "C": "133.1", "D": "134.2" },
      "correct_answer": "C"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "Line with equation y=2x+1. What's y when x=4?",
      "options": { "A": "8", "B": "9", "C": "10", "D": "11" },
      "correct_answer": "B"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "📉 shows decay: 64 → 32 → 16 → ?. Next value?",
      "options": { "A": "10", "B": "9", "C": "8", "D": "7" },
      "correct_answer": "C"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "Graph comparing: Plant A grows 2cm/day, Plant B grows 1.5cm/day. After 5 days, difference?",
      "options": { "A": "2cm", "B": "2.5cm", "C": "3cm", "D": "3.5cm" },
      "correct_answer": "B"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "📈 with fluctuation: 5, 8, 6, 9, 7, ?. Next?",
      "options": { "A": "8", "B": "9", "C": "10", "D": "11" },
      "correct_answer": "C"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "Line passes through (0,3) and (4,11). What's equation?",
      "options": { "A": "y=2x+3", "B": "y=3x+3", "C": "y=4x+3", "D": "y=5x+3" },
      "correct_answer": "A"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "📉 shows depreciation: Car value: Year1=₹80000, Year2=₹72000, Year3=₹64800. % decrease?",
      "options": { "A": "8%", "B": "9%", "C": "10%", "D": "11%" },
      "correct_answer": "C"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "Multiple lines: Red line starts higher but blue line steeper. Which overtakes first?",
      "options": {
        "A": "Red",
        "B": "Blue",
        "C": "Never",
        "D": "Can't determine"
      },
      "correct_answer": "B"
    },

    {
      "id": 41,
      "difficulty": "hard",
      "question": "📈 shows accelerating growth: 1, 2, 4, 7, 11, ?. Next value?",
      "options": { "A": "15", "B": "16", "C": "17", "D": "18" },
      "correct_answer": "B"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "Line graph with equation y=0.5x². What's y when x=6?",
      "options": { "A": "16", "B": "17", "C": "18", "D": "19" },
      "correct_answer": "C"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "📉 then 📈 with symmetry: 10, 7, 5, 4, 5, 7, ?. Next?",
      "options": { "A": "9", "B": "10", "C": "11", "D": "12" },
      "correct_answer": "B"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "Three lines: A: y=2x+1, B: y=3x-1, C: y=x+3. Which is steepest?",
      "options": { "A": "A", "B": "B", "C": "C", "D": "All same" },
      "correct_answer": "B"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "📈 shows exponential: 1, 2, 4, 8, 16, ?. Next?",
      "options": { "A": "24", "B": "28", "C": "32", "D": "36" },
      "correct_answer": "C"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "Line with changing slope: (0,0)→(2,2)→(4,3). Average slope 0-4?",
      "options": { "A": "0.5", "B": "0.75", "C": "1", "D": "1.25" },
      "correct_answer": "B"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "📉 shows logarithmic decay: 100, 50, 25, 12.5, ?. Next?",
      "options": { "A": "6.25", "B": "5.5", "C": "5", "D": "4.5" },
      "correct_answer": "A"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "Graph with maximum point: 2, 5, 8, 10, 8, 5, ?. Next?",
      "options": { "A": "2", "B": "3", "C": "4", "D": "5" },
      "correct_answer": "A"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "Two equations intersect: y=2x+1 and y= -x+7. Intersection point?",
      "options": { "A": "(1,3)", "B": "(2,5)", "C": "(3,7)", "D": "(4,9)" },
      "correct_answer": "B"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "📈 shows Fibonacci: 1, 1, 2, 3, 5, ?. Next?",
      "options": { "A": "7", "B": "8", "C": "9", "D": "10" },
      "correct_answer": "B"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "Line with periodic pattern: 3, 7, 3, 7, 3, 7, ?. Next?",
      "options": { "A": "3", "B": "5", "C": "7", "D": "9" },
      "correct_answer": "A"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "📉 shows inverse: 100, 50, 33.3, 25, ?. Next approx?",
      "options": { "A": "20", "B": "18", "C": "16", "D": "14" },
      "correct_answer": "A"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "Three lines: A starts at 0 slope=2, B starts at 5 slope=1, C starts at 10 slope=0. Which stays highest longest?",
      "options": { "A": "A", "B": "B", "C": "C", "D": "All same" },
      "correct_answer": "C"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "📈 shows quadratic: 0, 1, 4, 9, 16, ?. Next?",
      "options": { "A": "23", "B": "24", "C": "25", "D": "26" },
      "correct_answer": "C"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "Line with discontinuity: 5, 5, 5, 10, 10, 10, ?. Next?",
      "options": { "A": "10", "B": "12", "C": "15", "D": "20" },
      "correct_answer": "C"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "Graph shows y = 3x - 2. What's x when y=13?",
      "options": { "A": "4", "B": "5", "C": "6", "D": "7" },
      "correct_answer": "B"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "📉 shows geometric: 81, 27, 9, 3, ?. Next?",
      "options": { "A": "1.5", "B": "1", "C": "0.5", "D": "0.33" },
      "correct_answer": "B"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "Multiple intersections: Line1: y=x+2, Line2: y=2x-1, Line3: y= -x+8. Which two intersect at highest y?",
      "options": {
        "A": "1&2",
        "B": "1&3",
        "C": "2&3",
        "D": "All same"
      },
      "correct_answer": "D"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "📈 shows pattern: Add 2, then 3, then 4, then 5: Start=1, then 3,6,10,15, ?. Next?",
      "options": { "A": "20", "B": "21", "C": "22", "D": "23" },
      "correct_answer": "B"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "Complex graph: y = x² - 4x + 4. What's minimum value?",
      "options": { "A": "0", "B": "1", "C": "2", "D": "3" },
      "correct_answer": "A"
    }
  ]
}