{
  "title": "Graphical Representation of Data (Data Handling) - Grade 8 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "📊 A bar graph uses ___ to show data.",
      "options": {
        "A": "Circles",
        "B": "Angles",
        "C": "Rectangular bars",
        "D": "Lines"
      },
      "correct_answer": "C"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "📈 To show change over time, we often use a ___ graph.",
      "options": { "A": "Bar", "B": "Pie", "C": "Line", "D": "Pictograph" },
      "correct_answer": "C"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "📉 The vertical axis is also called the ___ axis.",
      "options": {
        "A": "x-axis",
        "B": "y-axis",
        "C": "horizontal",
        "D": "diagonal"
      },
      "correct_answer": "B"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "📋 A ___ uses pictures or symbols to represent data.",
      "options": {
        "A": "Line graph",
        "B": "Histogram",
        "C": "Pictograph",
        "D": "Pie chart"
      },
      "correct_answer": "C"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "🎯 In a bar graph, bars can be ___ or vertical.",
      "options": {
        "A": "horizontal",
        "B": "curved",
        "C": "circular",
        "D": "triangular"
      },
      "correct_answer": "A"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "📖 The title of a graph tells us the ___.",
      "options": { "A": "scale", "B": "subject", "C": "colors", "D": "author" },
      "correct_answer": "B"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "📐 On a graph, the point where x-axis and y-axis meet is called the ___.",
      "options": {
        "A": "origin",
        "B": "center",
        "C": "vertex",
        "D": "endpoint"
      },
      "correct_answer": "A"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "📊 Which graph is best for comparing categories?",
      "options": {
        "A": "Line graph",
        "B": "Bar graph",
        "C": "Pie chart",
        "D": "Scatter plot"
      },
      "correct_answer": "B"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "🌡️ Daily temperature for a week is best shown with a ___ graph.",
      "options": { "A": "Bar", "B": "Line", "C": "Pictograph", "D": "Pie" },
      "correct_answer": "B"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "📈 A line graph uses ___ to connect data points.",
      "options": { "A": "bars", "B": "pictures", "C": "lines", "D": "slices" },
      "correct_answer": "C"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "🎨 The scale on an axis shows the ___ of the data.",
      "options": { "A": "color", "B": "range", "C": "title", "D": "author" },
      "correct_answer": "B"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "📊 A double bar graph compares ___ sets of data.",
      "options": { "A": "two", "B": "three", "C": "four", "D": "five" },
      "correct_answer": "A"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "📋 In a pictograph, each 🍎 might represent 5 apples. This is called the ___.",
      "options": { "A": "key", "B": "scale", "C": "title", "D": "axis" },
      "correct_answer": "A"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "📉 If a bar reaches 30 on the y-axis and scale is 1 unit = 2, the value is ___.",
      "options": {
        "A": "60",
        "B": "30",
        "C": "15",
        "D": "10"
      },
      "correct_answer": "A"
    },

    {
      "id": 15,
      "difficulty": "easy",
      "question": "📈 Data that changes continuously is best for a ___ graph.",
      "options": { "A": "bar", "B": "pie", "C": "line", "D": "pictograph" },
      "correct_answer": "C"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "📊 The horizontal axis is also called the ___ axis.",
      "options": {
        "A": "y-axis",
        "B": "x-axis",
        "C": "vertical",
        "D": "diagonal"
      },
      "correct_answer": "B"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "📋 In a pictograph, if 🚗 = 4 cars, then 🚗🚗🚗 means ___ cars.",
      "options": { "A": 8, "B": 12, "C": 16, "D": 20 },
      "correct_answer": "B"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "📐 A graph should always have a clear ___.",
      "options": { "A": "border", "B": "title", "C": "color", "D": "picture" },
      "correct_answer": "B"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "📊 To show parts of a whole, we use a ___ chart.",
      "options": { "A": "bar", "B": "line", "C": "pie", "D": "pictograph" },
      "correct_answer": "C"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "📈 On a line graph, time is usually on the ___ axis.",
      "options": {
        "A": "x-axis",
        "B": "y-axis",
        "C": "vertical",
        "D": "diagonal"
      },
      "correct_answer": "A"
    },
    {
      "id": 21,
      "difficulty": "medium",
      "question": "📊 A bar graph shows sales: Mon ₹400, Tue ₹600, Wed ₹500, Thu ₹700. Scale: 1 cm = ₹100. Tuesday's bar height?",
      "options": { "A": "4 cm", "B": "5 cm", "C": "6 cm", "D": "7 cm" },
      "correct_answer": "C"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "📈 Line graph shows temperature: 8 AM 20°C, 12 PM 30°C, 4 PM 25°C. What is the temperature change from 8 AM to 12 PM?",
      "options": {
        "A": "5°C rise",
        "B": "10°C rise",
        "C": "5°C fall",
        "D": "10°C fall"
      },
      "correct_answer": "B"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "📉 Double bar graph: Class 8A & 8B test scores. 8A: Math 80, Sci 70. 8B: Math 75, Sci 85. Which subject does 8B score higher?",
      "options": { "A": "Math", "B": "Science", "C": "Both", "D": "Neither" },
      "correct_answer": "B"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "📋 Pictograph: Each 🍕 = 4 pizzas sold. Day 1: 🍕🍕🍕, Day 2: 🍕🍕, Day 3: 🍕🍕🍕🍕. Total pizzas?",
      "options": {
        "A": "36",
        "B": "32",
        "C": "28",
        "D": "24"
      },
      "correct_answer": "A"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "📊 Histogram: Shows age groups. Bar for 10-15 yrs is tallest. What does this mean?",
      "options": {
        "A": "Most people are 10-15",
        "B": "Least people are 10-15",
        "C": "Average age is 10",
        "D": "No one is 10-15"
      },
      "correct_answer": "A"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "📈 Line graph: Distance over time. Line is horizontal. What does this indicate?",
      "options": {
        "A": "No movement",
        "B": "Constant speed",
        "C": "Increasing speed",
        "D": "Decreasing speed"
      },
      "correct_answer": "A"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "📊 Bar graph scale: 1 unit = 5 books. A bar ends at 8 units. Books represented?",
      "options": { "A": 35, "B": 40, "C": 45, "D": 50 },
      "correct_answer": "B"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "📋 Pictograph key: Each ★ = 3 stars. If a row shows ★★★★★, total stars?",
      "options": { "A": 12, "B": 15, "C": 18, "D": 21 },
      "correct_answer": "B"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "📊 Double bar graph: Girls and boys in clubs. Music: Girls 12, Boys 8. Sports: Girls 10, Boys 15. Which club has more boys than girls?",
      "options": { "A": "Music", "B": "Sports", "C": "Both", "D": "Neither" },
      "correct_answer": "B"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "📈 Line graph: Plant height over weeks. Week1 5cm, Week2 8cm, Week3 11cm, Week4 14cm. What is the weekly growth?",
      "options": { "A": "2 cm", "B": "3 cm", "C": "4 cm", "D": "5 cm" },
      "correct_answer": "B"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "📊 A bar graph's y-axis goes 0, 10, 20, 30. The scale is?",
      "options": {
        "A": "1 unit = 5",
        "B": "1 unit = 10",
        "C": "1 unit = 15",
        "D": "1 unit = 20"
      },
      "correct_answer": "B"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "📋 Pictograph: Each 🚌 = 10 students. School has 🚌🚌🚌🚌🚌. How many students?",
      "options": { "A": 40, "B": 45, "C": 50, "D": 55 },
      "correct_answer": "C"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "📊 In a bar graph, if the bar for 'March' is twice as tall as 'February', and Feb = 30 units, then March = ?",
      "options": { "A": 45, "B": 50, "C": 60, "D": 70 },
      "correct_answer": "C"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "📈 Line graph shows profit: Jan ₹1000, Feb ₹1500, Mar ₹1200, Apr ₹1800. Largest increase between?",
      "options": {
        "A": "Jan-Feb",
        "B": "Feb-Mar",
        "C": "Mar-Apr",
        "D": "Jan-Apr"
      },
      "correct_answer": "C"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "📊 Histogram: Bars touch each other. This is because data is ___.",
      "options": {
        "A": "categorical",
        "B": "continuous",
        "C": "discrete",
        "D": "random"
      },
      "correct_answer": "B"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "📈 A line graph's points are (1, 10), (2, 20), (3, 30). The relationship is?",
      "options": {
        "A": "y = 10x",
        "B": "y = x",
        "C": "y = x + 5",
        "D": "y = 2x"
      },
      "correct_answer": "A"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "📊 Double bar graph: TV shows. Show A: Boys 25, Girls 30. Show B: Boys 40, Girls 20. Total viewers for Show B?",
      "options": {
        "A": "60",
        "B": "50",
        "C": "55",
        "D": "65"
      },
      "correct_answer": "A"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "📋 Pictograph: Each 🎈 = 5 balloons. Party A: 🎈🎈🎈🎈, Party B: 🎈🎈🎈🎈🎈🎈. Difference in balloons?",
      "options": {
        "A": "10",
        "B": "5",
        "C": "15",
        "D": "20"
      },
      "correct_answer": "A"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "📈 Line graph: Rainfall in cm. June 5, July 8, Aug 12, Sept 7. What is average rainfall?",
      "options": {
        "A": "8 cm",
        "B": "7 cm",
        "C": "9 cm",
        "D": "10 cm"
      },
      "correct_answer": "A"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "📊 Bar graph: Favorite fruit. Apple 20, Banana 25, Orange 15, Mango 30. Which fruit has 25% of total?",
      "options": {
        "A": "Banana",
        "B": "Apple",
        "C": "Orange",
        "D": "Mango"
      },
      "correct_answer": "A"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "📊 Bar graph: Favorite fruit. Apple 20, Banana 25, Orange 15, Mango 30. Which fruit has 25% of total?",
      "options": {
        "A": "Banana",
        "B": "Apple",
        "C": "Orange",
        "D": "Mango"
      },
      "correct_answer": "A"
    },
    {
      "id": 41,
      "difficulty": "hard",
      "question": "📊 A compound bar graph shows 3 years data. Year1: A=40, B=30; Year2: A=50, B=40; Year3: A=60, B=50. Total for A?",
      "options": {
        "A": "150",
        "B": "130",
        "C": "140",
        "D": "160"
      },
      "correct_answer": "A"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "📊 Histogram: Class intervals 0-10, 10-20, 20-30. Frequencies: 5, 8, 12. Total observations?",
      "options": {
        "A": "25",
        "B": "20",
        "C": "22",
        "D": "28"
      },
      "correct_answer": "A"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "📋 A pictograph uses 🔵 = 50 units. If total is 650 units, how many symbols for a value of 200?",
      "options": { "A": 3, "B": 4, "C": 5, "D": 6 },
      "correct_answer": "B"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "📊 Double bar graph: Company X & Y profits. X: Q1=100, Q2=120, Q3=130, Q4=150. Y: Q1=80, Q2=110, Q3=140, Q4=160. Which quarter does Y exceed X?",
      "options": { "A": "Q1", "B": "Q2", "C": "Q3", "D": "Q4" },
      "correct_answer": "D"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "📈 Line graph: Speed vs time. Line slopes downwards. This means?",
      "options": {
        "A": "Accelerating",
        "B": "Decelerating",
        "C": "Constant speed",
        "D": "Stopped"
      },
      "correct_answer": "B"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "📊 A bar graph's y-axis scale is 1 cm = 25 people. A bar is 6.4 cm tall. People represented?",
      "options": {
        "A": "160",
        "B": "150",
        "C": "170",
        "D": "180"
      },
      "correct_answer": "A"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "📋 Pictograph: Each symbol = 12 items. A category has 7.5 symbols. How many items?",
      "options": {
        "A": "90",
        "B": "80",
        "C": "84",
        "D": "96"
      },
      "correct_answer": "A"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "📊 A graph has broken axis (〓〓). This means?",
      "options": {
        "A": "Data is missing",
        "B": "Scale is not uniform",
        "C": "Large gap in values",
        "D": "Graph is wrong"
      },
      "correct_answer": "C"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "📈 Line graph: Distance (km) vs time (hr). Slope = 60. What does this represent?",
      "options": {
        "A": "Speed 60 km/hr",
        "B": "Distance 60 km",
        "C": "Time 60 min",
        "D": "Acceleration"
      },
      "correct_answer": "A"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "📊 Histogram: Class width 10, frequency density 2.5. Frequency?",
      "options": {
        "A": "25",
        "B": "20",
        "C": "30",
        "D": "35"
      },
      "correct_answer": "A"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "📋 A pictograph's key changes from 🔺 = 10 to 🔺 = 15. A row with 6 symbols now represents?",
      "options": {
        "A": "90",
        "B": "60",
        "C": "75",
        "D": "105"
      },
      "correct_answer": "A"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "📊 Double bar graph: City A & B rainfall. A: Jan 5cm, Feb 7cm, Mar 4cm. B: Jan 6cm, Feb 6cm, Mar 5cm. Average rainfall for B?",
      "options": {
        "A": "5.67 cm",
        "B": "5.33 cm",
        "C": "6.00 cm",
        "D": "6.33 cm"
      },
      "correct_answer": "A"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "📈 Line graph: Two lines, one steeper. Steeper line means?",
      "options": {
        "A": "Slower rate",
        "B": "Faster rate",
        "C": "Same rate",
        "D": "No change"
      },
      "correct_answer": "B"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "📊 Bar graph: 3D effect is used. This is for?",
      "options": {
        "A": "Accuracy",
        "B": "Visual appeal",
        "C": "More data",
        "D": "Smaller scale"
      },
      "correct_answer": "B"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "📈 A graph plots y = x². Is it linear?",
      "options": { "A": "Yes", "B": "No", "C": "Sometimes", "D": "Cannot say" },
      "correct_answer": "B"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "📊 Histogram: Area of bar represents?",
      "options": {
        "A": "Frequency",
        "B": "Class width",
        "C": "Frequency density",
        "D": "Midpoint"
      },
      "correct_answer": "A"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "📋 Pictograph: Fractional symbol (half a 🚗) is used when value is?",
      "options": {
        "A": "Less than key value",
        "B": "More than key value",
        "C": "Not a whole number",
        "D": "Zero"
      },
      "correct_answer": "C"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "📊 A graph has no title. What is missing?",
      "options": {
        "A": "Clarity",
        "B": "Scale",
        "C": "Axis labels",
        "D": "Purpose"
      },
      "correct_answer": "A"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "📈 Line graph: Extending line beyond data points is called?",
      "options": {
        "A": "Interpolation",
        "B": "Extrapolation",
        "C": "Projection",
        "D": "Prediction"
      },
      "correct_answer": "B"
    }
  ]
}