{
  "title": "Comparing Very Large and Very Small Numbers (Exponents) - Grade 8 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "Which is larger? 10² or 10³ 📏",
      "options": {
        "A": "10²",
        "B": "10³",
        "C": "They are equal",
        "D": "Cannot compare"
      },
      "correct_answer": "B"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "Which is smaller? 1.5 × 10² or 1.5 × 10³ ⚖️",
      "options": {
        "A": "1.5 × 10²",
        "B": "1.5 × 10³",
        "C": "Same",
        "D": "None"
      },
      "correct_answer": "A"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "Compare: 5 × 10⁻² vs 5 × 10⁻³ 🧐",
      "options": {
        "A": "First is larger",
        "B": "Second is larger",
        "C": "Equal",
        "D": "Cannot tell"
      },
      "correct_answer": "A"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "Is 10⁴ greater than 10⁵? ✅ or ❌",
      "options": { "A": "Yes", "B": "No", "C": "Equal", "D": "Maybe" },
      "correct_answer": "B"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "Which number is largest? 3 × 10¹, 3 × 10², 3 × 10³ 🏆",
      "options": {
        "A": "3 × 10¹",
        "B": "3 × 10²",
        "C": "3 × 10³",
        "D": "All equal"
      },
      "correct_answer": "C"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "Which is smallest? 7 × 10⁻¹, 7 × 10⁻², 7 × 10⁻³ 🐜",
      "options": {
        "A": "7 × 10⁻¹",
        "B": "7 × 10⁻²",
        "C": "7 × 10⁻³",
        "D": "All equal"
      },
      "correct_answer": "C"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "True or False: 10⁰ is larger than 10⁻¹ 🔍",
      "options": { "A": "True", "B": "False", "C": "Equal", "D": "No idea" },
      "correct_answer": "A"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "Arrange in ascending: 2 × 10³, 2 × 10¹, 2 × 10² ⬆️",
      "options": {
        "A": "2 × 10³, 2 × 10², 2 × 10¹",
        "B": "2 × 10¹, 2 × 10², 2 × 10³",
        "C": "2 × 10², 2 × 10¹, 2 × 10³",
        "D": "2 × 10¹, 2 × 10³, 2 × 10²"
      },
      "correct_answer": "B"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "Compare 9.2 × 10⁴ with 9.2 × 10⁵. Which is greater? 📈",
      "options": { "A": "First", "B": "Second", "C": "Same", "D": "Not sure" },
      "correct_answer": "B"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "Which is smaller? 6.3 × 10⁻⁴ or 6.3 × 10⁻⁵ 🔬",
      "options": {
        "A": "First",
        "B": "Second",
        "C": "Equal",
        "D": "Can’t compare"
      },
      "correct_answer": "B"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "Is 4 × 10⁶ > 4 × 10⁷? 🤔",
      "options": { "A": "Yes", "B": "No", "C": "Equal", "D": "Maybe" },
      "correct_answer": "B"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "Pick the largest: 1.1 × 10², 1.1 × 10⁰, 1.1 × 10¹ 🎯",
      "options": {
        "A": "1.1 × 10²",
        "B": "1.1 × 10⁰",
        "C": "1.1 × 10¹",
        "D": "All equal"
      },
      "correct_answer": "A"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "True/False: 10⁻³ is less than 10⁻² 📉",
      "options": { "A": "True", "B": "False", "C": "Equal", "D": "Cannot say" },
      "correct_answer": "A"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "Which is greater? 5.5 × 10⁸ or 5.5 × 10⁹ 🚀",
      "options": {
        "A": "First",
        "B": "Second",
        "C": "Equal",
        "D": "No difference"
      },
      "correct_answer": "B"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "Compare: 3 × 10⁻⁷ and 3 × 10⁻⁸. Which is smaller? 🔎",
      "options": {
        "A": "First",
        "B": "Second",
        "C": "Both equal",
        "D": "Depends"
      },
      "correct_answer": "B"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "Arrange descending: 10⁻¹, 10⁻³, 10⁻² ⬇️",
      "options": {
        "A": "10⁻³, 10⁻², 10⁻¹",
        "B": "10⁻¹, 10⁻², 10⁻³",
        "C": "10⁻², 10⁻¹, 10⁻³",
        "D": "10⁻¹, 10⁻³, 10⁻²"
      },
      "correct_answer": "B"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "Which is larger? 8.0 × 10⁰ or 8.0 × 10⁻¹ ⚡",
      "options": {
        "A": "First",
        "B": "Second",
        "C": "Same",
        "D": "Not comparable"
      },
      "correct_answer": "A"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "True/False: 2 × 10⁴ is smaller than 2 × 10³ ❓",
      "options": { "A": "True", "B": "False", "C": "Equal", "D": "Not sure" },
      "correct_answer": "B"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "Pick smallest: 9 × 10¹², 9 × 10¹¹, 9 × 10¹³ 🌌",
      "options": {
        "A": "9 × 10¹²",
        "B": "9 × 10¹¹",
        "C": "9 × 10¹³",
        "D": "All same"
      },
      "correct_answer": "B"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "Compare 7.2 × 10⁻⁵ and 7.2 × 10⁻⁶. Which is closer to zero? 🎈",
      "options": {
        "A": "7.2 × 10⁻⁵",
        "B": "7.2 × 10⁻⁶",
        "C": "Same",
        "D": "Cannot determine"
      },
      "correct_answer": "B"
    },
    {
      "id": 21,
      "difficulty": "medium",
      "question": "Which is greater? 6.7 × 10⁵ or 67 × 10⁴ 🤨",
      "options": {
        "A": "6.7 × 10⁵",
        "B": "67 × 10⁴",
        "C": "Equal",
        "D": "Cannot compare"
      },
      "correct_answer": "C"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "Arrange ascending: 5 × 10⁻⁶, 500 × 10⁻⁸, 0.005 × 10⁻³ 🔄",
      "options": {
        "A": "0.005 × 10⁻³, 5 × 10⁻⁶, 500 × 10⁻⁸",
        "B": "500 × 10⁻⁸, 0.005 × 10⁻³, 5 × 10⁻⁶",
        "C": "500 × 10⁻⁸, 5 × 10⁻⁶, 0.005 × 10⁻³",
        "D": "All equal"
      },
      "correct_answer": "D"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "Compare: 4.5 × 10¹² vs 45 × 10¹¹ 📊",
      "options": {
        "A": "First is larger",
        "B": "Second is larger",
        "C": "Equal",
        "D": "No relation"
      },
      "correct_answer": "C"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "Which is smallest? 3.2 × 10⁻⁴, 32 × 10⁻⁵, 0.32 × 10⁻³ 🧮",
      "options": {
        "A": "3.2 × 10⁻⁴",
        "B": "32 × 10⁻⁵",
        "C": "0.32 × 10⁻³",
        "D": "All equal"
      },
      "correct_answer": "D"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "If a = 2.4 × 10⁸, b = 24 × 10⁷, compare a and b ⚖️",
      "options": {
        "A": "a > b",
        "B": "a < b",
        "C": "a = b",
        "D": "Cannot compare"
      },
      "correct_answer": "C"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "Which is larger? 9.9 × 10⁻⁷ or 990 × 10⁻¹⁰ 🔍",
      "options": {
        "A": "9.9 × 10⁻⁷",
        "B": "990 × 10⁻¹⁰",
        "C": "Equal",
        "D": "Depends"
      },
      "correct_answer": "C"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "True/False: 7 × 10⁵ is equal to 700 × 10³ ✅❌",
      "options": {
        "A": "True",
        "B": "False",
        "C": "Only if base same",
        "D": "Maybe"
      },
      "correct_answer": "A"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "Arrange descending: 8 × 10⁶, 80 × 10⁵, 0.8 × 10⁷ 📉",
      "options": {
        "A": "8×10⁶, 0.8×10⁷, 80×10⁵",
        "B": "80×10⁵, 8×10⁶, 0.8×10⁷",
        "C": "All equal",
        "D": "0.8×10⁷, 8×10⁶, 80×10⁵"
      },
      "correct_answer": "C"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "Which number is closest to 1 × 10⁰? 2 × 10⁻¹, 5 × 10⁻¹, 1 × 10⁻² 🎯",
      "options": {
        "A": "2 × 10⁻¹",
        "B": "5 × 10⁻¹",
        "C": "1 × 10⁻²",
        "D": "All same"
      },
      "correct_answer": "B"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "Compare: 1.5 × 10⁹ and 1500 × 10⁶ 📏",
      "options": {
        "A": "First > Second",
        "B": "First < Second",
        "C": "Equal",
        "D": "No relation"
      },
      "correct_answer": "C"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "Pick smallest: 6 × 10⁻⁵, 600 × 10⁻⁷, 0.06 × 10⁻³ 🐜",
      "options": {
        "A": "6 × 10⁻⁵",
        "B": "600 × 10⁻⁷",
        "C": "0.06 × 10⁻³",
        "D": "All equal"
      },
      "correct_answer": "D"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "True/False: 3.0 × 10⁴ < 30 × 10³ ❓",
      "options": { "A": "True", "B": "False", "C": "Equal", "D": "Cannot say" },
      "correct_answer": "B"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "Which is greater? 4.44 × 10¹⁰ or 444 × 10⁷ 🚀",
      "options": {
        "A": "First",
        "B": "Second",
        "C": "Equal",
        "D": "Second slightly less"
      },
      "correct_answer": "C"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "Arrange ascending: 2.5 × 10⁻³, 250 × 10⁻⁵, 0.025 × 10⁻¹ ⬆️",
      "options": {
        "A": "2.5×10⁻³, 250×10⁻⁵, 0.025×10⁻¹",
        "B": "250×10⁻⁵, 0.025×10⁻¹, 2.5×10⁻³",
        "C": "All equal",
        "D": "0.025×10⁻¹, 2.5×10⁻³, 250×10⁻⁵"
      },
      "correct_answer": "C"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "Compare: a = 9 × 10⁸, b = 900 × 10⁶. Which is correct? 🔄",
      "options": {
        "A": "a > b",
        "B": "a < b",
        "C": "a = b",
        "D": "b = 9 × 10⁷"
      },
      "correct_answer": "C"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "Pick largest: 7.1 × 10¹², 710 × 10¹⁰, 0.71 × 10¹³ 🌠",
      "options": {
        "A": "7.1 × 10¹²",
        "B": "710 × 10¹⁰",
        "C": "0.71 × 10¹³",
        "D": "All equal"
      },
      "correct_answer": "D"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "Which is smaller? 8.0 × 10⁻⁶ or 0.8 × 10⁻⁵ 🔬",
      "options": {
        "A": "8.0 × 10⁻⁶",
        "B": "0.8 × 10⁻⁵",
        "C": "Equal",
        "D": "Cannot compare"
      },
      "correct_answer": "C"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "If x = 5 × 10⁴, y = 50 × 10³, z = 500 × 10², order them ⚖️",
      "options": {
        "A": "x > y > z",
        "B": "x = y = z",
        "C": "z > y > x",
        "D": "y > x > z"
      },
      "correct_answer": "B"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "True/False: 2.3 × 10⁵ = 230 × 10³ ✅",
      "options": {
        "A": "True",
        "B": "False",
        "C": "Only if rounded",
        "D": "Depends"
      },
      "correct_answer": "A"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "Which is nearest to 10⁶? 9.9 × 10⁵, 1.01 × 10⁶, 999 × 10³ 🎯",
      "options": {
        "A": "9.9 × 10⁵",
        "B": "1.01 × 10⁶",
        "C": "999 × 10³",
        "D": "1.01 × 10⁶ and 999 × 10³ are equally close"
      },
      "correct_answer": "B"
    },

    {
      "id": 41,
      "difficulty": "hard",
      "question": "Compare: (3 × 10⁸) × 2 vs 6 × 10⁸ 📐",
      "options": {
        "A": "First larger",
        "B": "Second larger",
        "C": "Equal",
        "D": "Can’t compare"
      },
      "correct_answer": "C"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "Which is greater? √(4 × 10¹⁶) or 2 × 10⁸ 🧠",
      "options": {
        "A": "√(4 × 10¹⁶)",
        "B": "2 × 10⁸",
        "C": "Equal",
        "D": "Depends"
      },
      "correct_answer": "C"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "Arrange ascending: (2 × 10⁻⁵)², 4 × 10⁻¹⁰, (10⁻⁵) × (4 × 10⁻⁵) 🔄",
      "options": {
        "A": "(2×10⁻⁵)², 4×10⁻¹⁰, (10⁻⁵)×(4×10⁻⁵)",
        "B": "4×10⁻¹⁰, (2×10⁻⁵)², (10⁻⁵)×(4×10⁻⁵)",
        "C": "All equal",
        "D": "(10⁻⁵)×(4×10⁻⁵), 4×10⁻¹⁰, (2×10⁻⁵)²"
      },
      "correct_answer": "C"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "If a = 5.6 × 10⁹, b = 7.1 × 10⁸, which is larger? ⚖️",
      "options": { "A": "a", "B": "b", "C": "Equal", "D": "Cannot tell" },
      "correct_answer": "A"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "Compare: (9 × 10¹²) ÷ 3 vs 3 × 10¹² ➗",
      "options": {
        "A": "First larger",
        "B": "Second larger",
        "C": "Equal",
        "D": "Not related"
      },
      "correct_answer": "C"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "Which is smallest? 10⁻⁶ × 10³, 10⁻² × 10⁻¹, 10⁻⁴ × 10¹ 🧮",
      "options": {
        "A": "10⁻⁶ × 10³",
        "B": "10⁻² × 10⁻¹",
        "C": "10⁻⁴ × 10¹",
        "D": "All equal"
      },
      "correct_answer": "B"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "If 2.5 × 10ⁿ = 250 × 10⁸, find n and compare with 10¹⁰ 🧐",
      "options": {
        "A": "n = 10, equal to 10¹⁰",
        "B": "n = 10, less than 10¹⁰",
        "C": "n = 12, greater than 10¹⁰",
        "D": "n = 8, less than 10¹⁰"
      },
      "correct_answer": "A"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "Arrange descending: (10³)², 10⁵ × 10, 10⁶ 📉",
      "options": {
        "A": "(10³)², 10⁵ × 10, 10⁶",
        "B": "10⁶, 10⁵ × 10, (10³)²",
        "C": "All equal",
        "D": "10⁵ × 10, 10⁶, (10³)²"
      },
      "correct_answer": "C"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "Compare: 1 light year ≈ 9.46 × 10¹² km, and 10¹³ km. Which is larger? 🌌",
      "options": {
        "A": "Light year",
        "B": "10¹³ km",
        "C": "Equal",
        "D": "Very close, but light year smaller"
      },
      "correct_answer": "B"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "Which is greater? 3⁴ × 10⁴ or 9² × 10² 📏",
      "options": {
        "A": "3⁴ × 10⁴",
        "B": "9² × 10²",
        "C": "Equal",
        "D": "Cannot compare"
      },
      "correct_answer": "A"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "Arrange: 5 × 10⁻⁸, (√25 × 10⁻¹⁶), 25 × 10⁻⁹ in ascending ⬆️",
      "options": {
        "A": "5×10⁻⁸, 25×10⁻⁹, √(25×10⁻¹⁶)",
        "B": "√(25×10⁻¹⁶), 25×10⁻⁹, 5×10⁻⁸",
        "C": "All equal",
        "D": "25×10⁻⁹, 5×10⁻⁸, √(25×10⁻¹⁶)"
      },
      "correct_answer": "C"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "True/False: (2 × 10⁶)³ > 8 × 10¹⁸ ❓",
      "options": {
        "A": "True",
        "B": "False",
        "C": "Equal",
        "D": "Cannot compute"
      },
      "correct_answer": "C"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "Compare: Mass of Earth ≈ 6 × 10²⁴ kg, Mass of Mars ≈ 6.4 × 10²³ kg. How many times larger is Earth? 🪐",
      "options": {
        "A": "About 10 times",
        "B": "About 9.4 times",
        "C": "About 0.94 times",
        "D": "About 1.06 times"
      },
      "correct_answer": "B"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "Which is smaller? Avogadro's number 6.022 × 10²³ or 10²⁴? 🔬",
      "options": {
        "A": "Avogadro's number",
        "B": "10²⁴",
        "C": "Equal",
        "D": "Can't compare"
      },
      "correct_answer": "A"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "If a = 7 × 10⁹, b = 0.7 × 10¹⁰, c = 70 × 10⁸, pick largest 🏆",
      "options": { "A": "a", "B": "b", "C": "c", "D": "All equal" },
      "correct_answer": "D"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "Compare: (10⁴ + 10⁴) vs 2 × 10⁴ ➕",
      "options": {
        "A": "First larger",
        "B": "Second larger",
        "C": "Equal",
        "D": "No relation"
      },
      "correct_answer": "C"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "Which is greater? Distance to Moon 3.84 × 10⁵ km or 4 × 10⁵ km? 🌙",
      "options": {
        "A": "Moon distance",
        "B": "4 × 10⁵ km",
        "C": "Equal",
        "D": "Close, but Moon smaller"
      },
      "correct_answer": "B"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "Arrange descending: 8 × 10⁻⁷, 0.0008 × 10⁻³, 80 × 10⁻⁸ ⬇️",
      "options": {
        "A": "8×10⁻⁷, 80×10⁻⁸, 0.0008×10⁻³",
        "B": "All equal",
        "C": "80×10⁻⁸, 8×10⁻⁷, 0.0008×10⁻³",
        "D": "0.0008×10⁻³, 8×10⁻⁷, 80×10⁻⁸"
      },
      "correct_answer": "B"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "If 1 micron = 10⁻⁶ m, 1 nm = 10⁻⁹ m, compare 1000 nm and 0.001 mm 📏",
      "options": {
        "A": "1000 nm larger",
        "B": "0.001 mm larger",
        "C": "Equal",
        "D": "Depends"
      },
      "correct_answer": "C"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "Which is largest? 5.5 × 10¹⁰, 55 × 10⁹, 5500 × 10⁷, 0.055 × 10¹³ 🌟",
      "options": {
        "A": "5.5 × 10¹⁰",
        "B": "55 × 10⁹",
        "C": "5500 × 10⁷",
        "D": "All equal"
      },
      "correct_answer": "D"
    }
  ]
}