{
  "title": "Bar Graphs (Data Handling) - Grade 6 CBSE",
  "total_questions": 100,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "What type of graph uses bars to show data?", "options": {"A": "Line graph", "B": "Bar graph", "C": "Pie chart", "D": "Pictograph"}, "correct_answer": "B"},
    {"id": 2, "difficulty": "easy", "question": "In a bar graph, what do the bars represent?", "options": {"A": "Categories", "B": "Values", "C": "Colors", "D": "Time"}, "correct_answer": "B"},
    {"id": 3, "difficulty": "easy", "question": "Where do we usually write the categories in a bar graph?", "options": {"A": "On top", "B": "At the bottom", "C": "On the side", "D": "In the middle"}, "correct_answer": "B"},
    {"id": 4, "difficulty": "easy", "question": "What is the vertical line on the left side of a bar graph called?", "options": {"A": "X-axis", "B": "Y-axis", "C": "Horizontal axis", "D": "Base line"}, "correct_answer": "B"},
    {"id": 5, "difficulty": "easy", "question": "What is the horizontal line at the bottom of a bar graph called?", "options": {"A": "X-axis", "B": "Y-axis", "C": "Vertical axis", "D": "Top line"}, "correct_answer": "A"},
    {"id": 6, "difficulty": "easy", "question": "In a bar graph showing favorite fruits, what would be on the x-axis?", "options": {"A": "Number of students", "B": "Types of fruits", "C": "Colors of fruits", "D": "Prices of fruits"}, "correct_answer": "B"},
    {"id": 7, "difficulty": "easy", "question": "What does the height of a bar represent?", "options": {"A": "Color intensity", "B": "Value or frequency", "C": "Time duration", "D": "Category name"}, "correct_answer": "B"},
    {"id": 8, "difficulty": "easy", "question": "Which graph is best for comparing quantities?", "options": {"A": "Bar graph", "B": "Line graph", "C": "Both A and B", "D": "Neither"}, "correct_answer": "A"},
    {"id": 9, "difficulty": "easy", "question": "What should all bars in a bar graph have?", "options": {"A": "Same width", "B": "Same color", "C": "Same height", "D": "Same label"}, "correct_answer": "A"},
    {"id": 10, "difficulty": "easy", "question": "Where is the title usually placed in a bar graph?", "options": {"A": "At the top", "B": "At the bottom", "C": "On the left", "D": "On the right"}, "correct_answer": "A"},
    {"id": 11, "difficulty": "easy", "question": "What do we call the numbers on the y-axis?", "options": {"A": "Scale", "B": "Labels", "C": "Titles", "D": "Values"}, "correct_answer": "A"},
    {"id": 12, "difficulty": "easy", "question": "If a bar reaches 40 on the scale and each unit represents 5 students, how many students does it represent?", "options": {"A": "40", "B": "200", "C": "8", "D": "45"}, "correct_answer": "B"},
    {"id": 13, "difficulty": "easy", "question": "What type of data is best shown with a bar graph?", "options": {"A": "Continuous data", "B": "Categorical data", "C": "Both", "D": "Neither"}, "correct_answer": "B"},
    {"id": 14, "difficulty": "easy", "question": "How are bars usually arranged in a bar graph?", "options": {"A": "Randomly", "B": "In alphabetical order", "C": "With equal spacing", "D": "Touching each other"}, "correct_answer": "C"},
    {"id": 15, "difficulty": "easy", "question": "What is the first step in making a bar graph?", "options": {"A": "Draw bars", "B": "Collect data", "C": "Choose colors", "D": "Write title"}, "correct_answer": "B"},
    {"id": 16, "difficulty": "easy", "question": "If a bar graph shows months on x-axis, what type of data is it?", "options": {"A": "Numerical", "B": "Categorical", "C": "Continuous", "D": "Random"}, "correct_answer": "B"},
    {"id": 17, "difficulty": "easy", "question": "What should be clear and readable in a bar graph?", "options": {"A": "Labels", "B": "Scale", "C": "Title", "D": "All of these"}, "correct_answer": "D"},
    {"id": 18, "difficulty": "easy", "question": "Can a bar graph show negative values?", "options": {"A": "Yes", "B": "No", "C": "Sometimes", "D": "Never"}, "correct_answer": "A"},
    {"id": 19, "difficulty": "easy", "question": "What is the space between bars called?", "options": {"A": "Gap", "B": "Margin", "C": "Space", "D": "Interval"}, "correct_answer": "A"},
    {"id": 20, "difficulty": "easy", "question": "Why do we use different colors for bars sometimes?", "options": {"A": "To make it pretty", "B": "To distinguish categories", "C": "To save ink", "D": "No reason"}, "correct_answer": "B"},
    {"id": 21, "difficulty": "medium", "question": "In a bar graph showing test scores of 5 students: Rohan-80, Priya-90, Amit-70, Seema-85, Raj-75. Which student has the tallest bar?", "options": {"A": "Rohan", "B": "Priya", "C": "Amit", "D": "Seema"}, "correct_answer": "B"},
    {"id": 22, "difficulty": "medium", "question": "A bar graph shows sales: Jan-40, Feb-60, Mar-55, Apr-75. What is the difference between highest and lowest sales?", "options": {"A": "20", "B": "25", "C": "30", "D": "35"}, "correct_answer": "D"},
    {"id": 23, "difficulty": "medium", "question": "If y-axis scale is 1 cm = 10 units, and a bar is 4.5 cm tall, what value does it represent?", "options": {"A": "40", "B": "45", "C": "50", "D": "55"}, "correct_answer": "B"},
    {"id": 24, "difficulty": "medium", "question": "Bar graph shows favorite colors: Red-15, Blue-25, Green-20, Yellow-10. What percentage chose Blue?", "options": {"A": "25%", "B": "30%", "C": "35%", "D": "40%"}, "correct_answer": "C"},
    {"id": 25, "difficulty": "medium", "question": "A double bar graph compares boys and girls. What does it show?", "options": {"A": "Two categories", "B": "Two time periods", "C": "Two groups for each category", "D": "All of these"}, "correct_answer": "C"},
    {"id": 26, "difficulty": "medium", "question": "In a bar graph with scale 1 unit = 5 books, a bar reaches 8 units. How many books?", "options": {"A": "8", "B": "13", "C": "40", "D": "45"}, "correct_answer": "C"},
    {"id": 27, "difficulty": "medium", "question": "Bar graph shows temperatures: Mon-30, Tue-32, Wed-28, Thu-31, Fri-29. What is the average?", "options": {"A": "29", "B": "30", "C": "31", "D": "32"}, "correct_answer": "B"},
    {"id": 28, "difficulty": "medium", "question": "If a bar graph has no title, what is missing?", "options": {"A": "Scale", "B": "Labels", "C": "Key information", "D": "Bars"}, "correct_answer": "C"},
    {"id": 29, "difficulty": "medium", "question": "Bar graph shows marks: Math-85, Science-78, English-92, Hindi-80. Which subject has shortest bar?", "options": {"A": "Math", "B": "Science", "C": "English", "D": "Hindi"}, "correct_answer": "B"},
    {"id": 30, "difficulty": "medium", "question": "What is the total if bar graph shows: A-12, B-18, C-15, D-21?", "options": {"A": "64", "B": "65", "C": "66", "D": "67"}, "correct_answer": "C"},
    {"id": 31, "difficulty": "medium", "question": "In a horizontal bar graph, where is the scale?", "options": {"A": "Top", "B": "Bottom", "C": "Left", "D": "It varies"}, "correct_answer": "B"},
    {"id": 32, "difficulty": "medium", "question": "Bar graph scale: 0, 10, 20, 30, 40. What is the interval?", "options": {"A": "5", "B": "10", "C": "15", "D": "20"}, "correct_answer": "B"},
    {"id": 33, "difficulty": "medium", "question": "If tallest bar is 8 cm and represents 160 people, what does 1 cm represent?", "options": {"A": "10 people", "B": "15 people", "C": "20 people", "D": "25 people"}, "correct_answer": "C"},
    {"id": 34, "difficulty": "medium", "question": "Bar graph shows rainfall in mm: Jan-50, Feb-40, Mar-60, Apr-30. What is the range?", "options": {"A": "20", "B": "25", "C": "30", "D": "35"}, "correct_answer": "C"},
    {"id": 35, "difficulty": "medium", "question": "What type of bar graph has bars touching each other?", "options": {"A": "Histogram", "B": "Regular bar graph", "C": "Double bar graph", "D": "Horizontal bar graph"}, "correct_answer": "A"},
    {"id": 36, "difficulty": "medium", "question": "Bar graph shows ages: 10y-15, 11y-20, 12y-25, 13y-30. How many children total?", "options": {"A": "80", "B": "85", "C": "90", "D": "95"}, "correct_answer": "C"},
    {"id": 37, "difficulty": "medium", "question": "If a bar is halfway between 40 and 60 on scale, what is its value?", "options": {"A": "45", "B": "50", "C": "55", "D": "60"}, "correct_answer": "B"},
    {"id": 38, "difficulty": "medium", "question": "Bar graph shows sports preferences: Cricket-35, Football-25, Tennis-15, Badminton-20. What fraction prefer Cricket?", "options": {"A": "7/19", "B": "7/20", "C": "1/3", "D": "2/5"}, "correct_answer": "A"},
    {"id": 39, "difficulty": "medium", "question": "What is the mode in bar graph: 10, 15, 10, 20, 15, 10?", "options": {"A": "10", "B": "15", "C": "20", "D": "25"}, "correct_answer": "A"},
    {"id": 40, "difficulty": "medium", "question": "Bar graph shows expenses: Food-40%, Rent-30%, Travel-20%, Others-10%. If total is ₹20000, what is Food expense?", "options": {"A": "₹6000", "B": "₹7000", "C": "₹8000", "D": "₹9000"}, "correct_answer": "C"},
    {"id": 41, "difficulty": "medium", "question": "In a stacked bar graph, what do different segments show?", "options": {"A": "Different time periods", "B": "Components of total", "C": "Different categories", "D": "Comparisons"}, "correct_answer": "B"},
    {"id": 42, "difficulty": "medium", "question": "Bar graph shows sales growth: 2018-100, 2019-120, 2020-110, 2021-130. What is percentage increase from 2018 to 2021?", "options": {"A": "20%", "B": "25%", "C": "30%", "D": "35%"}, "correct_answer": "C"},
    {"id": 43, "difficulty": "medium", "question": "If scale starts at 50 instead of 0, what might happen?", "options": {"A": "Bars look shorter", "B": "Differences exaggerated", "C": "Data distorted", "D": "All of these"}, "correct_answer": "D"},
    {"id": 44, "difficulty": "medium", "question": "Bar graph shows test scores: 60-5 students, 70-8, 80-12, 90-10. How many students scored 70 or more?", "options": {"A": "25", "B": "30", "C": "35", "D": "40"}, "correct_answer": "B"},
    {"id": 45, "difficulty": "medium", "question": "What is the median in bar graph: 5, 10, 15, 20, 25?", "options": {"A": "10", "B": "15", "C": "20", "D": "25"}, "correct_answer": "B"},
    {"id": 46, "difficulty": "medium", "question": "Bar graph shows population: City A-2L, B-3L, C-2.5L, D-1.5L. What is average population?", "options": {"A": "2.0L", "B": "2.25L", "C": "2.5L", "D": "2.75L"}, "correct_answer": "B"},
    {"id": 47, "difficulty": "medium", "question": "If a bar graph has inconsistent scale, what is wrong?", "options": {"A": "Misleading", "B": "Inaccurate", "C": "Confusing", "D": "All of these"}, "correct_answer": "D"},
    {"id": 48, "difficulty": "medium", "question": "Bar graph shows distances: Home-School-5km, School-Park-3km, Park-Home-4km. What is total distance of trip Home-School-Park-Home?", "options": {"A": "10km", "B": "11km", "C": "12km", "D": "13km"}, "correct_answer": "C"},
    {"id": 49, "difficulty": "medium", "question": "What is the mean of bar graph values: 12, 18, 24, 30?", "options": {"A": "20", "B": "21", "C": "22", "D": "23"}, "correct_answer": "B"},
    {"id": 50, "difficulty": "medium", "question": "Bar graph shows temperature difference from average: Jan-+2, Feb-+1, Mar-0, Apr--1, May--2. What is actual if average is 25°C in May?", "options": {"A": "23°C", "B": "24°C", "C": "25°C", "D": "26°C"}, "correct_answer": "A"},
    {"id": 51, "difficulty": "medium", "question": "In a percentage bar graph, what do bars show?", "options": {"A": "Actual values", "B": "Percentages", "C": "Both", "D": "Neither"}, "correct_answer": "B"},
    {"id": 52, "difficulty": "medium", "question": "Bar graph shows heights: Plant A-30cm, B-45cm, C-35cm, D-40cm. What is the ratio of tallest to shortest?", "options": {"A": "2:3", "B": "3:2", "C": "4:3", "D": "3:4"}, "correct_answer": "B"},
    {"id": 53, "difficulty": "medium", "question": "If a bar graph shows cumulative frequency, what is it called?", "options": {"A": "Ogive", "B": "Histogram", "C": "Frequency polygon", "D": "Pie chart"}, "correct_answer": "A"},
    {"id": 54, "difficulty": "medium", "question": "Bar graph shows profits: Q1-50K, Q2-60K, Q3-55K, Q4-65K. What is total profit?", "options": {"A": "220K", "B": "230K", "C": "240K", "D": "250K"}, "correct_answer": "B"},
    {"id": 55, "difficulty": "medium", "question": "What is the range in bar graph: 25, 30, 35, 40, 45?", "options": {"A": "15", "B": "20", "C": "25", "D": "30"}, "correct_answer": "B"},
    {"id": 56, "difficulty": "medium", "question": "Bar graph shows attendance: Mon-95%, Tue-90%, Wed-85%, Thu-92%, Fri-88%. What is average attendance?", "options": {"A": "89%", "B": "90%", "C": "91%", "D": "92%"}, "correct_answer": "B"},
    {"id": 57, "difficulty": "medium", "question": "If a bar graph has logarithmic scale, what is special?", "options": {"A": "Equal intervals represent equal ratios", "B": "Bars are curved", "C": "No zero point", "D": "All of these"}, "correct_answer": "A"},
    {"id": 58, "difficulty": "medium", "question": "Bar graph shows speeds: Car-60, Bike-40, Bus-50, Train-80. What is the mean speed?", "options": {"A": "55", "B": "57.5", "C": "60", "D": "62.5"}, "correct_answer": "B"},
    {"id": 59, "difficulty": "medium", "question": "What is the difference between bar graph and histogram?", "options": {"A": "Bars touch in histogram", "B": "Histogram for continuous data", "C": "Bar graph for categorical", "D": "All of these"}, "correct_answer": "D"},
    {"id": 60, "difficulty": "medium", "question": "Bar graph shows expenses: Rent-₹12000, Food-₹8000, Travel-₹5000, Others-₹3000. What percentage is Rent?", "options": {"A": "40%", "B": "42.5%", "C": "45%", "D": "47.5%"}, "correct_answer": "B"},
    {"id": 61, "difficulty": "medium", "question": "In a diverging bar graph, where do bars start?", "options": {"A": "From zero", "B": "From center", "C": "From left", "D": "From right"}, "correct_answer": "B"},
    {"id": 62, "difficulty": "medium", "question": "Bar graph shows production: Factory A-500, B-600, C-550, D-450. If A increases by 20%, what is new value?", "options": {"A": "550", "B": "580", "C": "600", "D": "620"}, "correct_answer": "C"},
    {"id": 63, "difficulty": "medium", "question": "What is the mode in bar graph: 15, 20, 25, 20, 30, 20, 25?", "options": {"A": "15", "B": "20", "C": "25", "D": "30"}, "correct_answer": "B"},
    {"id": 64, "difficulty": "medium", "question": "Bar graph shows ages: 20-25: 30 people, 26-30: 40, 31-35: 35, 36-40: 25. How many people 30 or younger?", "options": {"A": "60", "B": "65", "C": "70", "D": "75"}, "correct_answer": "C"},
    {"id": 65, "difficulty": "medium", "question": "If a bar graph shows frequency distribution, what is it?", "options": {"A": "Histogram", "B": "Frequency polygon", "C": "Bar chart", "D": "All of these"}, "correct_answer": "D"},
    {"id": 66, "difficulty": "medium", "question": "Bar graph shows rainfall comparison: 2020-100cm, 2021-120cm, 2022-90cm. What is percentage decrease from 2021 to 2022?", "options": {"A": "20%", "B": "25%", "C": "30%", "D": "35%"}, "correct_answer": "B"},
    {"id": 67, "difficulty": "medium", "question": "What is the median of bar graph: 10, 15, 20, 25, 30, 35?", "options": {"A": "20", "B": "22.5", "C": "25", "D": "27.5"}, "correct_answer": "B"},
    {"id": 68, "difficulty": "medium", "question": "Bar graph shows scores: Team A-180, B-200, C-190, D-210. What is the average score?", "options": {"A": "190", "B": "195", "C": "200", "D": "205"}, "correct_answer": "B"},
    {"id": 69, "difficulty": "medium", "question": "In a proportional bar graph, what is constant?", "options": {"A": "Bar width", "B": "Bar height", "C": "Total length", "D": "Spacing"}, "correct_answer": "C"},
    {"id": 70, "difficulty": "medium", "question": "Bar graph shows distances: Delhi-Mumbai-1400km, Mumbai-Chennai-1300km, Chennai-Kolkata-1600km. What is total distance Delhi-Mumbai-Chennai-Kolkata?", "options": {"A": "4100km", "B": "4200km", "C": "4300km", "D": "4400km"}, "correct_answer": "C"},
    {"id": 71, "difficulty": "medium", "question": "What is the mean of bar graph: 18, 22, 26, 30, 34?", "options": {"A": "24", "B": "25", "C": "26", "D": "27"}, "correct_answer": "C"},
    {"id": 72, "difficulty": "medium", "question": "Bar graph shows temperatures: 8am-20°C, 12pm-28°C, 4pm-26°C, 8pm-22°C. What is temperature difference between highest and lowest?", "options": {"A": "6°C", "B": "7°C", "C": "8°C", "D": "9°C"}, "correct_answer": "C"},
    {"id": 73, "difficulty": "medium", "question": "In a compound bar graph, what do stacked bars show?", "options": {"A": "Components of total", "B": "Time series", "C": "Comparisons", "D": "All of these"}, "correct_answer": "A"},
    {"id": 74, "difficulty": "medium", "question": "Bar graph shows prices: Item A-₹50, B-₹75, C-₹60, D-₹85. What is the average price?", "options": {"A": "₹65", "B": "₹67.5", "C": "₹70", "D": "₹72.5"}, "correct_answer": "B"},
    {"id": 75, "difficulty": "medium", "question": "What is the range in bar graph: 45, 50, 55, 60, 65, 70?", "options": {"A": "20", "B": "25", "C": "30", "D": "35"}, "correct_answer": "B"},
    {"id": 76, "difficulty": "medium", "question": "Bar graph shows populations: Town X-50000, Y-60000, Z-55000, W-65000. What is total population?", "options": {"A": "225000", "B": "230000", "C": "235000", "D": "240000"}, "correct_answer": "B"},
    {"id": 77, "difficulty": "medium", "question": "In a sliding bar graph, what moves?", "options": {"A": "Bars slide horizontally", "B": "Scale slides", "C": "Labels slide", "D": "All of these"}, "correct_answer": "A"},
    {"id": 78, "difficulty": "medium", "question": "Bar graph shows weights: Box A-20kg, B-25kg, C-30kg, D-15kg. What is total weight?", "options": {"A": "85kg", "B": "90kg", "C": "95kg", "D": "100kg"}, "correct_answer": "B"},
    {"id": 79, "difficulty": "medium", "question": "What is the mode in bar graph: 12, 15, 18, 15, 21, 15, 18?", "options": {"A": "12", "B": "15", "C": "18", "D": "21"}, "correct_answer": "B"},
    {"id": 80, "difficulty": "medium", "question": "Bar graph shows speeds: 40km/h-10 cars, 50km/h-15, 60km/h-20, 70km/h-5. How many cars total?", "options": {"A": "45", "B": "50", "C": "55", "D": "60"}, "correct_answer": "B"},
    {"id": 81, "difficulty": "hard", "question": "In a bar graph with secondary y-axis, what does it show?", "options": {"A": "Different scale for some data", "B": "Two different units", "C": "Comparison of different metrics", "D": "All of these"}, "correct_answer": "D"},
    {"id": 82, "difficulty": "hard", "question": "Bar graph shows normal distribution. What shape should it have?", "options": {"A": "Bell-shaped", "B": "U-shaped", "C": "J-shaped", "D": "Linear"}, "correct_answer": "A"},
    {"id": 83, "difficulty": "hard", "question": "What is skewness in a bar graph distribution?", "options": {"A": "Lack of symmetry", "B": "Peak position", "C": "Tail direction", "D": "All of these"}, "correct_answer": "D"},
    {"id": 84, "difficulty": "hard", "question": "In a Lorenz curve bar graph, what is shown?", "options": {"A": "Wealth distribution", "B": "Income inequality", "C": "Concentration", "D": "All of these"}, "correct_answer": "D"},
    {"id": 85, "difficulty": "hard", "question": "Bar graph shows cumulative percentage. What is it called?", "options": {"A": "Ogive", "B": "Pareto chart", "C": "Both", "D": "Neither"}, "correct_answer": "C"},
    {"id": 86, "difficulty": "hard", "question": "What is kurtosis in bar graph distribution?", "options": {"A": "Peakedness", "B": "Tail thickness", "C": "Both", "D": "Neither"}, "correct_answer": "C"},
    {"id": 87, "difficulty": "hard", "question": "In a waterfall bar graph, what do bars show?", "options": {"A": "Cumulative effect", "B": "Step-by-step changes", "C": "Starting and ending values", "D": "All of these"}, "correct_answer": "D"},
    {"id": 88, "difficulty": "hard", "question": "Bar graph shows confidence intervals. What do error bars represent?", "options": {"A": "Uncertainty", "B": "Standard deviation", "C": "Range of likely values", "D": "All of these"}, "correct_answer": "D"},
    {"id": 89, "difficulty": "hard", "question": "What is a box plot combined with bar graph called?", "options": {"A": "Box-and-whisker with bars", "B": "Violin plot", "C": "Bar-box plot", "D": "Not standard"}, "correct_answer": "D"},
    {"id": 90, "difficulty": "hard", "question": "In a Marimekko chart, what varies?", "options": {"A": "Bar widths and heights", "B": "Only heights", "C": "Only widths", "D": "Neither"}, "correct_answer": "A"},
    {"id": 91, "difficulty": "hard", "question": "Bar graph shows logarithmic transformed data. Why?", "options": {"A": "Reduce skewness", "B": "Compare ratios", "C": "Handle wide range", "D": "All of these"}, "correct_answer": "D"},
    {"id": 92, "difficulty": "hard", "question": "What is a population pyramid?", "options": {"A": "Back-to-back bar graph", "B": "Age-sex distribution", "C": "Histogram variant", "D": "All of these"}, "correct_answer": "D"},
    {"id": 93, "difficulty": "hard", "question": "In a radial bar graph, how are bars arranged?", "options": {"A": "Circularly", "B": "From center outward", "C": "Like spokes", "D": "All of these"}, "correct_answer": "D"},
    {"id": 94, "difficulty": "hard", "question": "Bar graph with standard error bars. What do they show?", "options": {"A": "Precision of mean", "B": "Sampling variability", "C": "Both", "D": "Neither"}, "correct_answer": "C"},
    {"id": 95, "difficulty": "hard", "question": "What is a diverging stacked bar chart?", "options": {"A": "Bars extend left and right", "B": "For Likert scale data", "C": "Shows positive/negative", "D": "All of these"}, "correct_answer": "D"},
    {"id": 96, "difficulty": "hard", "question": "In a bar graph with trend line, what is added?", "options": {"A": "Regression line", "B": "Moving average", "C": "Pattern overlay", "D": "All of these"}, "correct_answer": "D"},
    {"id": 97, "difficulty": "hard", "question": "Bar graph shows statistical significance. What might asterisks mean?", "options": {"A": "p-value levels", "B": "Significance stars", "C": "Both", "D": "Neither"}, "correct_answer": "C"},
    {"id": 98, "difficulty": "hard", "question": "What is a gauge chart?", "options": {"A": "Circular bar graph", "B": "Speedometer style", "C": "Shows progress", "D": "All of these"}, "correct_answer": "D"},
    {"id": 99, "difficulty": "hard", "question": "In a bar graph with 95% CI, what range is shown?", "options": {"A": "Where true mean likely lies", "B": "Confidence interval", "C": "Both", "D": "Neither"}, "correct_answer": "C"},
    {"id": 100, "difficulty": "hard", "question": "Bar graph with density overlay. What is shown?", "options": {"A": "Distribution shape", "B": "Probability density", "C": "Both", "D": "Neither"}, "correct_answer": "C"}
  ,
{"id":101,"difficulty":"easy","question":"Which axis shows categories in a vertical bar graph?","options":{"A":"Y-axis","B":"X-axis","C":"Both","D":"None"},"correct_answer":"B"},
  {"id":102,"difficulty":"easy","question":"What does equal width of bars indicate?","options":{"A":"Equal values","B":"Uniform representation","C":"Same category","D":"Same color"},"correct_answer":"B"},
  {"id":103,"difficulty":"easy","question":"Which part of bar graph shows numbers?","options":{"A":"Legend","B":"Scale","C":"Title","D":"Bars"},"correct_answer":"B"},
  {"id":104,"difficulty":"easy","question":"What should be written clearly on both axes?","options":{"A":"Colors","B":"Labels","C":"Bars","D":"Design"},"correct_answer":"B"},
  {"id":105,"difficulty":"easy","question":"Which graph is best to compare students in different classes?","options":{"A":"Pie chart","B":"Bar graph","C":"Line graph","D":"Pictograph"},"correct_answer":"B"},
  {"id":106,"difficulty":"easy","question":"Bars in a bar graph usually do not ______.","options":{"A":"Touch","B":"Have equal width","C":"Have labels","D":"Have scale"},"correct_answer":"A"},
  {"id":107,"difficulty":"easy","question":"What helps us understand the meaning of colors in a bar graph?","options":{"A":"Scale","B":"Legend","C":"Title","D":"Axis"},"correct_answer":"B"},
  {"id":108,"difficulty":"easy","question":"Which bar is tallest if value is maximum?","options":{"A":"Lowest","B":"Middle","C":"Highest","D":"Smallest"},"correct_answer":"C"},
  {"id":109,"difficulty":"easy","question":"What type of data uses names or labels?","options":{"A":"Numerical","B":"Categorical","C":"Continuous","D":"Random"},"correct_answer":"B"},
  {"id":110,"difficulty":"easy","question":"What does a bar graph mainly help us to do?","options":{"A":"Calculate","B":"Compare","C":"Predict","D":"Estimate"},"correct_answer":"B"},
  {"id":111,"difficulty":"easy","question":"Which axis usually shows numbers?","options":{"A":"X-axis","B":"Y-axis","C":"Both","D":"None"},"correct_answer":"B"},
  {"id":112,"difficulty":"easy","question":"What should be same for all bars?","options":{"A":"Height","B":"Width","C":"Color","D":"Label"},"correct_answer":"B"},
  {"id":113,"difficulty":"easy","question":"What is the use of title in bar graph?","options":{"A":"Decoration","B":"Explain data","C":"Show scale","D":"Show bars"},"correct_answer":"B"},
  {"id":114,"difficulty":"easy","question":"Which graph uses rectangles?","options":{"A":"Line graph","B":"Bar graph","C":"Pie chart","D":"Histogram"},"correct_answer":"B"},
  {"id":115,"difficulty":"easy","question":"Which bar represents the least value?","options":{"A":"Tallest","B":"Shortest","C":"Middle","D":"Widest"},"correct_answer":"B"},
  {"id":116,"difficulty":"easy","question":"What is another name for bar graph?","options":{"A":"Bar chart","B":"Line chart","C":"Circle graph","D":"Area graph"},"correct_answer":"A"},
  {"id":117,"difficulty":"easy","question":"What does scale show?","options":{"A":"Categories","B":"Values","C":"Colors","D":"Bars"},"correct_answer":"B"},
  {"id":118,"difficulty":"easy","question":"Which graph shows change over time best?","options":{"A":"Bar graph","B":"Line graph","C":"Pie chart","D":"Table"},"correct_answer":"B"},
  {"id":119,"difficulty":"easy","question":"Can bar graphs be horizontal?","options":{"A":"Yes","B":"No","C":"Sometimes","D":"Never"},"correct_answer":"A"},
  {"id":120,"difficulty":"easy","question":"What is the space between two bars called?","options":{"A":"Interval","B":"Gap","C":"Margin","D":"Scale"},"correct_answer":"B"},

 
  {"id":121,"difficulty":"medium","question":"A bar graph shows books read: Ram-5, Shyam-7, Geeta-6. Who read the most books?","options":{"A":"Ram","B":"Shyam","C":"Geeta","D":"All equal"},"correct_answer":"B"},
  {"id":122,"difficulty":"medium","question":"If scale is 1 unit = 2 pens, bar height is 6 units. How many pens?","options":{"A":"8","B":"10","C":"12","D":"14"},"correct_answer":"C"},
  {"id":123,"difficulty":"medium","question":"Bar graph shows scores: 40, 50, 60, 70. What is the range?","options":{"A":"20","B":"25","C":"30","D":"35"},"correct_answer":"C"},
  {"id":124,"difficulty":"medium","question":"Which bar graph compares two groups side by side?","options":{"A":"Histogram","B":"Double bar graph","C":"Line graph","D":"Pie chart"},"correct_answer":"B"},
  {"id":125,"difficulty":"medium","question":"If total students are 50 and bar shows 20 students like Maths, what fraction is this?","options":{"A":"1/5","B":"2/5","C":"3/5","D":"4/5"},"correct_answer":"B"},
  {"id":126,"difficulty":"medium","question":"A bar graph shows rainfall in cm: 10, 20, 15, 25. What is average rainfall?","options":{"A":"16","B":"17.5","C":"18","D":"20"},"correct_answer":"B"},
  {"id":127,"difficulty":"medium","question":"What happens if scale is uneven?","options":{"A":"Graph looks neat","B":"Data becomes misleading","C":"Bars increase","D":"Nothing"},"correct_answer":"B"},
  {"id":128,"difficulty":"medium","question":"Bar graph shows expenses: Food-₹3000, Rent-₹5000, Travel-₹2000. What is total expense?","options":{"A":"₹9000","B":"₹10000","C":"₹11000","D":"₹12000"},"correct_answer":"B"},
  {"id":129,"difficulty":"medium","question":"Which bar graph is used for continuous data?","options":{"A":"Bar graph","B":"Histogram","C":"Pie chart","D":"Pictograph"},"correct_answer":"B"},
  {"id":130,"difficulty":"medium","question":"If highest bar is 40 and lowest is 10, what is the difference?","options":{"A":"20","B":"25","C":"30","D":"35"},"correct_answer":"C"},

 
  {"id":131,"difficulty":"hard","question":"A bar graph shows production: A-120, B-150, C-180. By how much does C exceed A?","options":{"A":"40","B":"50","C":"60","D":"70"},"correct_answer":"C"},
  {"id":132,"difficulty":"hard","question":"If scale is 1 cm = 25 units and bar is 6 cm tall, what is value?","options":{"A":"125","B":"150","C":"175","D":"200"},"correct_answer":"B"},
  {"id":133,"difficulty":"hard","question":"Bar graph shows marks: 60, 70, 80, 90. What is mean score?","options":{"A":"72.5","B":"75","C":"80","D":"85"},"correct_answer":"B"},
  {"id":134,"difficulty":"hard","question":"In a double bar graph, what does comparison become easier to see?","options":{"A":"Totals","B":"Differences","C":"Averages","D":"Ratios"},"correct_answer":"B"},
  {"id":135,"difficulty":"hard","question":"Which graph shows cumulative frequency?","options":{"A":"Bar graph","B":"Ogive","C":"Histogram","D":"Line graph"},"correct_answer":"B"},
  {"id":136,"difficulty":"hard","question":"Bar graph shows data starting from 20 instead of 0. What may happen?","options":{"A":"Accurate view","B":"Exaggerated difference","C":"Equal bars","D":"No effect"},"correct_answer":"B"},
  {"id":137,"difficulty":"hard","question":"Which type of bar graph has bars touching each other?","options":{"A":"Bar graph","B":"Double bar graph","C":"Histogram","D":"Line graph"},"correct_answer":"C"},
  {"id":138,"difficulty":"hard","question":"Bar graph shows speeds: 30, 45, 60, 75. What is median speed?","options":{"A":"45","B":"52.5","C":"60","D":"67.5"},"correct_answer":"B"},
  {"id":139,"difficulty":"hard","question":"If total is 200 and one bar shows 50, what percent is it?","options":{"A":"20%","B":"25%","C":"30%","D":"35%"},"correct_answer":"B"},
  {"id":140,"difficulty":"hard","question":"Which bar graph uses bars extending both sides of origin?","options":{"A":"Stacked","B":"Diverging","C":"Double","D":"Simple"},"correct_answer":"B"},
  {"id":141,"difficulty":"hard","question":"What does a stacked bar graph show?","options":{"A":"Only totals","B":"Only categories","C":"Parts of whole","D":"Time series"},"correct_answer":"C"},
  {"id":142,"difficulty":"hard","question":"Bar graph shows profits: 10, 20, 30, 40. What is range?","options":{"A":"20","B":"25","C":"30","D":"35"},"correct_answer":"C"},
  {"id":143,"difficulty":"hard","question":"Which graph best compares boys vs girls across classes?","options":{"A":"Pie chart","B":"Line graph","C":"Double bar graph","D":"Histogram"},"correct_answer":"C"},
  {"id":144,"difficulty":"hard","question":"If bars are not equal width, graph becomes _____.","options":{"A":"Clear","B":"Misleading","C":"Accurate","D":"Better"},"correct_answer":"B"},
  {"id":145,"difficulty":"hard","question":"What does legend explain?","options":{"A":"Scale","B":"Colors","C":"Values","D":"Title"},"correct_answer":"B"},
  {"id":146,"difficulty":"hard","question":"Bar graph shows rainfall: 40, 60, 80, 100. What is average?","options":{"A":"65","B":"70","C":"75","D":"80"},"correct_answer":"C"},
  {"id":147,"difficulty":"hard","question":"Which graph is NOT suitable for categorical data?","options":{"A":"Bar graph","B":"Pie chart","C":"Line graph","D":"Pictograph"},"correct_answer":"C"},
  {"id":148,"difficulty":"hard","question":"If one bar is twice the height of another, what does it mean?","options":{"A":"Double value","B":"Double category","C":"Double width","D":"Double scale"},"correct_answer":"A"},
  {"id":149,"difficulty":"hard","question":"Bar graph shows test results of 4 terms. What is being compared?","options":{"A":"Categories","B":"Time periods","C":"Students","D":"Subjects"},"correct_answer":"B"},
  {"id":150,"difficulty":"hard","question":"Which feature is most important for correct interpretation?","options":{"A":"Color","B":"Design","C":"Scale","D":"Border"},"correct_answer":"C"}
]
}