{
  "title": "Conversion of Units (Perimeter and Area) - Grade 7 CBSE",
  "total_questions": 150,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "Convert 5 meters to centimeters.", "options": {"A": "50 cm", "B": "500 cm", "C": "5000 cm", "D": "5 cm"}, "correct_answer": "B"},
    {"id": 2, "difficulty": "easy", "question": "How many millimeters are in 1 centimeter?", "options": {"A": "10 mm", "B": "100 mm", "C": "1000 mm", "D": "1 mm"}, "correct_answer": "A"},
    {"id": 3, "difficulty": "easy", "question": "Convert 3 kilometers to meters.", "options": {"A": "30 m", "B": "300 m", "C": "3000 m", "D": "30000 m"}, "correct_answer": "C"},
    {"id": 4, "difficulty": "easy", "question": "How many square centimeters are in 1 square meter?", "options": {"A": "100 sq cm", "B": "1000 sq cm", "C": "10000 sq cm", "D": "100000 sq cm"}, "correct_answer": "C"},
    {"id": 5, "difficulty": "easy", "question": "Convert 2000 grams to kilograms.", "options": {"A": "0.2 kg", "B": "2 kg", "C": "20 kg", "D": "200 kg"}, "correct_answer": "B"},
    {"id": 6, "difficulty": "easy", "question": "How many meters are in 2.5 kilometers?", "options": {"A": "25 m", "B": "250 m", "C": "2500 m", "D": "25000 m"}, "correct_answer": "C"},
    {"id": 7, "difficulty": "easy", "question": "Convert 1500 milliliters to liters.", "options": {"A": "0.15 L", "B": "1.5 L", "C": "15 L", "D": "150 L"}, "correct_answer": "B"},
    {"id": 8, "difficulty": "easy", "question": "How many centimeters are in 0.8 meters?", "options": {"A": "8 cm", "B": "80 cm", "C": "800 cm", "D": "8000 cm"}, "correct_answer": "B"},
    {"id": 9, "difficulty": "easy", "question": "Convert 4.5 kg to grams.", "options": {"A": "45 g", "B": "450 g", "C": "4500 g", "D": "45000 g"}, "correct_answer": "C"},
    {"id": 10, "difficulty": "easy", "question": "How many millimeters are in 25 centimeters?", "options": {"A": "2.5 mm", "B": "25 mm", "C": "250 mm", "D": "2500 mm"}, "correct_answer": "C"},
    {"id": 11, "difficulty": "easy", "question": "Convert 0.75 liters to milliliters.", "options": {"A": "7.5 ml", "B": "75 ml", "C": "750 ml", "D": "7500 ml"}, "correct_answer": "C"},
    {"id": 12, "difficulty": "easy", "question": "How many square meters are in 20000 square centimeters?", "options": {"A": "0.2 sq m", "B": "2 sq m", "C": "20 sq m", "D": "200 sq m"}, "correct_answer": "B"},
    {"id": 13, "difficulty": "easy", "question": "Convert 8 meters to millimeters.", "options": {"A": "80 mm", "B": "800 mm", "C": "8000 mm", "D": "80000 mm"}, "correct_answer": "C"},
    {"id": 14, "difficulty": "easy", "question": "How many kilograms are in 3500 grams?", "options": {"A": "0.35 kg", "B": "3.5 kg", "C": "35 kg", "D": "350 kg"}, "correct_answer": "B"},
    {"id": 15, "difficulty": "easy", "question": "Convert 2.3 km to meters.", "options": {"A": "23 m", "B": "230 m", "C": "2300 m", "D": "23000 m"}, "correct_answer": "C"},
    {"id": 16, "difficulty": "easy", "question": "How many centimeters are in 1.2 meters?", "options": {"A": "12 cm", "B": "120 cm", "C": "1200 cm", "D": "12000 cm"}, "correct_answer": "B"},
    {"id": 17, "difficulty": "easy", "question": "Convert 500 sq cm to square meters.", "options": {"A": "0.005 sq m", "B": "0.05 sq m", "C": "0.5 sq m", "D": "5 sq m"}, "correct_answer": "B"},
    {"id": 18, "difficulty": "easy", "question": "How many milliliters are in 0.25 liters?", "options": {"A": "25 ml", "B": "250 ml", "C": "2500 ml", "D": "25000 ml"}, "correct_answer": "B"},
    {"id": 19, "difficulty": "easy", "question": "Convert 6.5 m to centimeters.", "options": {"A": "65 cm", "B": "650 cm", "C": "6500 cm", "D": "65000 cm"}, "correct_answer": "B"},
    {"id": 20, "difficulty": "easy", "question": "How many grams are in 0.8 kilograms?", "options": {"A": "8 g", "B": "80 g", "C": "800 g", "D": "8000 g"}, "correct_answer": "C"},
    
   {"id": 21, "difficulty": "medium", "question": "A rectangle is 3.5 m long and 2 m wide. What is its area in square centimeters?", "options": {"A": "70 sq cm", "B": "700 sq cm", "C": "7000 sq cm", "D": "70000 sq cm"}, "correct_answer": "D"}
, {"id": 22, "difficulty": "medium", "question": "Convert 2 hectares to square meters. (1 hectare = 10000 sq m)", "options": {"A": "200 sq m", "B": "2000 sq m", "C": "20000 sq m", "D": "200000 sq m"}, "correct_answer": "C"},
    {"id": 23, "difficulty": "medium", "question": "A square has a side of 15 cm. What is its perimeter in meters?", "options": {"A": "0.6 m", "B": "6 m", "C": "60 m", "D": "600 m"}, "correct_answer": "A"},
    {"id": 24, "difficulty": "medium", "question": "Convert 4500 square centimeters to square meters.", "options": {"A": "0.045 sq m", "B": "0.45 sq m", "C": "4.5 sq m", "D": "45 sq m"}, "correct_answer": "B"},
    {"id": 25, "difficulty": "medium", "question": "A rectangular plot is 25 m long and 12 m wide. What is its area in hectares?", "options": {"A": "0.003 hectares", "B": "0.03 hectares", "C": "0.3 hectares", "D": "3 hectares"}, "correct_answer": "B"},
    {"id": 26, "difficulty": "medium", "question": "Convert 3.5 km to centimeters.", "options": {"A": "350 cm", "B": "3500 cm", "C": "35000 cm", "D": "350000 cm"}, "correct_answer": "D"},
    {"id": 27, "difficulty": "medium", "question": "A triangle has sides 45 cm, 60 cm, and 75 cm. What is its perimeter in meters?", "options": {"A": "0.18 m", "B": "1.8 m", "C": "18 m", "D": "180 m"}, "correct_answer": "B"},
    {"id": 28, "difficulty": "medium", "question": "How many square millimeters are in 0.5 square centimeters?", "options": {"A": "5 sq mm", "B": "50 sq mm", "C": "500 sq mm", "D": "5000 sq mm"}, "correct_answer": "B"},
    {"id": 29, "difficulty": "medium", "question": "A room is 4.2 m long and 3.5 m wide. What is its area in square centimeters?", "options": {"A": "1470 sq cm", "B": "14700 sq cm", "C": "147000 sq cm", "D": "1470000 sq cm"}, "correct_answer": "B"},
    {"id": 30, "difficulty": "medium", "question": "Convert 0.08 square kilometers to square meters.", "options": {"A": "80 sq m", "B": "800 sq m", "C": "8000 sq m", "D": "80000 sq m"}, "correct_answer": "D"},
    {"id": 31, "difficulty": "medium", "question": "A rectangular field is 250 m long and 120 m wide. What is its perimeter in kilometers?", "options": {"A": "0.74 km", "B": "7.4 km", "C": "74 km", "D": "740 km"}, "correct_answer": "A"},
    {"id": 32, "difficulty": "medium", "question": "Convert 125000 square centimeters to square meters.", "options": {"A": "1.25 sq m", "B": "12.5 sq m", "C": "125 sq m", "D": "1250 sq m"}, "correct_answer": "B"},
    {"id": 33, "difficulty": "medium", "question": "A square has an area of 0.25 square meters. What is the length of each side in centimeters?", "options": {"A": "5 cm", "B": "25 cm", "C": "50 cm", "D": "250 cm"}, "correct_answer": "C"},
    {"id": 34, "difficulty": "medium", "question": "Convert 5.6 hectares to square meters.", "options": {"A": "56 sq m", "B": "560 sq m", "C": "5600 sq m", "D": "56000 sq m"}, "correct_answer": "D"},
    {"id": 35, "difficulty": "medium", "question": "A circle has a radius of 7 cm. What is its circumference in meters? (Use π = 22/7)", "options": {"A": "0.044 m", "B": "0.44 m", "C": "4.4 m", "D": "44 m"}, "correct_answer": "B"},
    {"id": 36, "difficulty": "medium", "question": "How many square centimeters are in 0.75 square meters?", "options": {"A": "75 sq cm", "B": "750 sq cm", "C": "7500 sq cm", "D": "75000 sq cm"}, "correct_answer": "C"},
    {"id": 37, "difficulty": "medium", "question": "A rectangular sheet is 80 cm long and 60 cm wide. What is its area in square meters?", "options": {"A": "0.048 sq m", "B": "0.48 sq m", "C": "4.8 sq m", "D": "48 sq m"}, "correct_answer": "B"},
    {"id": 38, "difficulty": "medium", "question": "Convert 0.3 square kilometers to hectares.", "options": {"A": "3 hectares", "B": "30 hectares", "C": "300 hectares", "D": "3000 hectares"}, "correct_answer": "B"},
    {"id": 39, "difficulty": "medium", "question": "A triangle has a base of 0.8 m and height of 0.5 m. What is its area in square centimeters?", "options": {"A": "20 sq cm", "B": "200 sq cm", "C": "2000 sq cm", "D": "20000 sq cm"}, "correct_answer": "C"},
    {"id": 40, "difficulty": "medium", "question": "Convert 45000 square meters to hectares.", "options": {"A": "0.45 hectares", "B": "4.5 hectares", "C": "45 hectares", "D": "450 hectares"}, "correct_answer": "B"},
    {"id": 41, "difficulty": "medium", "question": "A rectangular garden is 12.5 m long and 8 m wide. What is its perimeter in centimeters?", "options": {"A": "2050 cm", "B": "4100 cm", "C": "8200 cm", "D": "16400 cm"}, "correct_answer": "B"},
    {"id": 42, "difficulty": "medium", "question": "Convert 0.025 square meters to square centimeters.", "options": {"A": "2.5 sq cm", "B": "25 sq cm", "C": "250 sq cm", "D": "2500 sq cm"}, "correct_answer": "C"},
    {"id": 43, "difficulty": "medium", "question": "A square has a perimeter of 240 cm. What is its area in square meters?", "options": {"A": "0.0036 sq m", "B": "0.036 sq m", "C": "0.36 sq m", "D": "3.6 sq m"}, "correct_answer": "B"},
    {"id": 44, "difficulty": "medium", "question": "How many square meters are in 5.5 hectares?", "options": {"A": "55 sq m", "B": "550 sq m", "C": "5500 sq m", "D": "55000 sq m"}, "correct_answer": "D"},
    {"id": 45, "difficulty": "medium", "question": "A rectangle is 45 cm long and 30 cm wide. What is its area in square meters?", "options": {"A": "0.0135 sq m", "B": "0.135 sq m", "C": "1.35 sq m", "D": "13.5 sq m"}, "correct_answer": "B"},
    {"id": 46, "difficulty": "medium", "question": "Convert 2.8 km² to square meters.", "options": {"A": "280 sq m", "B": "2800 sq m", "C": "28000 sq m", "D": "2800000 sq m"}, "correct_answer": "D"},
    {"id": 47, "difficulty": "medium", "question": "A circular park has a diameter of 140 m. What is its area in hectares? (Use π = 22/7)", "options": {"A": "0.154 hectares", "B": "1.54 hectares", "C": "15.4 hectares", "D": "154 hectares"}, "correct_answer": "B"},
    {"id": 48, "difficulty": "medium", "question": "Convert 7500 square millimeters to square centimeters.", "options": {"A": "0.75 sq cm", "B": "7.5 sq cm", "C": "75 sq cm", "D": "750 sq cm"}, "correct_answer": "C"},
    {"id": 49, "difficulty": "medium", "question": "A rectangular field is 0.3 km long and 0.15 km wide. What is its area in square meters?", "options": {"A": "45 sq m", "B": "450 sq m", "C": "4500 sq m", "D": "45000 sq m"}, "correct_answer": "D"},
    {"id": 50, "difficulty": "medium", "question": "How many hectares are in 0.08 square kilometers?", "options": {"A": "0.8 hectares", "B": "8 hectares", "C": "80 hectares", "D": "800 hectares"}, "correct_answer": "B"},
    {"id": 51, "difficulty": "medium", "question": "A square has an area of 6400 square centimeters. What is the length of each side in meters?", "options": {"A": "0.08 m", "B": "0.8 m", "C": "8 m", "D": "80 m"}, "correct_answer": "B"},
    {"id": 52, "difficulty": "medium", "question": "Convert 0.45 square kilometers to square meters.", "options": {"A": "450 sq m", "B": "4500 sq m", "C": "45000 sq m", "D": "450000 sq m"}, "correct_answer": "D"},
    {"id": 53, "difficulty": "medium", "question": "A rectangular plot is 25 m long and 16 m wide. What is its perimeter in centimeters?", "options": {"A": "4100 cm", "B": "8200 cm", "C": "16400 cm", "D": "32800 cm"}, "correct_answer": "B"},
    {"id": 54, "difficulty": "medium", "question": "Convert 12500 square centimeters to square meters.", "options": {"A": "0.125 sq m", "B": "1.25 sq m", "C": "12.5 sq m", "D": "125 sq m"}, "correct_answer": "B"},
    {"id": 55, "difficulty": "medium", "question": "A triangle has a base of 1.2 m and height of 0.8 m. What is its area in square centimeters?", "options": {"A": "48 sq cm", "B": "480 sq cm", "C": "4800 sq cm", "D": "48000 sq cm"}, "correct_answer": "C"},
    {"id": 56, "difficulty": "medium", "question": "How many square meters are in 3.2 hectares?", "options": {"A": "32 sq m", "B": "320 sq m", "C": "3200 sq m", "D": "32000 sq m"}, "correct_answer": "D"},
    {"id": 57, "difficulty": "medium", "question": "A rectangle is 2.5 m long and 1.2 m wide. What is its area in square centimeters?", "options": {"A": "30 sq cm", "B": "300 sq cm", "C": "3000 sq cm", "D": "30000 sq cm"}, "correct_answer": "C"},
    {"id": 58, "difficulty": "medium", "question": "Convert 0.06 hectares to square meters.", "options": {"A": "6 sq m", "B": "60 sq m", "C": "600 sq m", "D": "6000 sq m"}, "correct_answer": "C"},
    {"id": 59, "difficulty": "medium", "question": "A square has a perimeter of 3.6 m. What is the length of each side in centimeters?", "options": {"A": "9 cm", "B": "90 cm", "C": "900 cm", "D": "9000 cm"}, "correct_answer": "B"},
    {"id": 60, "difficulty": "medium", "question": "Convert 850000 square centimeters to square meters.", "options": {"A": "8.5 sq m", "B": "85 sq m", "C": "850 sq m", "D": "8500 sq m"}, "correct_answer": "B"},
    {"id": 61, "difficulty": "medium", "question": "A rectangular field is 0.4 km long and 0.25 km wide. What is its perimeter in meters?", "options": {"A": "65 m", "B": "650 m", "C": "1300 m", "D": "6500 m"}, "correct_answer": "C"},
    {"id": 62, "difficulty": "medium", "question": "How many square centimeters are in 0.08 square meters?", "options": {"A": "8 sq cm", "B": "80 sq cm", "C": "800 sq cm", "D": "8000 sq cm"}, "correct_answer": "C"},
    {"id": 63, "difficulty": "medium", "question": "A circle has a radius of 14 cm. What is its area in square meters? (Use π = 22/7)", "options": {"A": "0.00616 sq m", "B": "0.0616 sq m", "C": "0.616 sq m", "D": "6.16 sq m"}, "correct_answer": "B"},
    {"id": 64, "difficulty": "medium", "question": "Convert 0.9 square kilometers to hectares.", "options": {"A": "9 hectares", "B": "90 hectares", "C": "900 hectares", "D": "9000 hectares"}, "correct_answer": "B"},
    {"id": 65, "difficulty": "medium", "question": "A rectangular sheet is 1.5 m long and 0.8 m wide. What is its area in square centimeters?", "options": {"A": "12 sq cm", "B": "120 sq cm", "C": "1200 sq cm", "D": "12000 sq cm"}, "correct_answer": "D"},
    {"id": 66, "difficulty": "medium", "question": "How many hectares are in 25000 square meters?", "options": {"A": "0.25 hectares", "B": "2.5 hectares", "C": "25 hectares", "D": "250 hectares"}, "correct_answer": "B"},
    {"id": 67, "difficulty": "medium", "question": "A square has an area of 0.49 square meters. What is the perimeter in centimeters?", "options": {"A": "28 cm", "B": "280 cm", "C": "2800 cm", "D": "28000 cm"}, "correct_answer": "B"},
    {"id": 68, "difficulty": "medium", "question": "Convert 0.007 square kilometers to square meters.", "options": {"A": "7 sq m", "B": "70 sq m", "C": "700 sq m", "D": "7000 sq m"}, "correct_answer": "D"},
    {"id": 69, "difficulty": "medium", "question": "A rectangular garden is 850 cm long and 450 cm wide. What is its area in square meters?", "options": {"A": "3.825 sq m", "B": "38.25 sq m", "C": "382.5 sq m", "D": "3825 sq m"}, "correct_answer": "B"},
    {"id": 70, "difficulty": "medium", "question": "Convert 0.12 hectares to square meters.", "options": {"A": "12 sq m", "B": "120 sq m", "C": "1200 sq m", "D": "12000 sq m"}, "correct_answer": "C"},
    {"id": 71, "difficulty": "medium", "question": "A triangle has sides 0.6 m, 0.8 m, and 1.0 m. What is its perimeter in centimeters?", "options": {"A": "24 cm", "B": "240 cm", "C": "2400 cm", "D": "24000 cm"}, "correct_answer": "B"},
    {"id": 72, "difficulty": "medium", "question": "How many square meters are in 150000 square centimeters?", "options": {"A": "1.5 sq m", "B": "15 sq m", "C": "150 sq m", "D": "1500 sq m"}, "correct_answer": "B"},
    {"id": 73, "difficulty": "medium", "question": "A rectangle is 3.2 m long and 1.5 m wide. What is its perimeter in centimeters?", "options": {"A": "47 cm", "B": "470 cm", "C": "940 cm", "D": "9400 cm"}, "correct_answer": "C"},
    {"id": 74, "difficulty": "medium", "question": "Convert 0.005 square kilometers to square meters.", "options": {"A": "5 sq m", "B": "50 sq m", "C": "500 sq m", "D": "5000 sq m"}, "correct_answer": "D"},
    {"id": 75, "difficulty": "medium", "question": "A square has a side of 0.7 m. What is its area in square centimeters?", "options": {"A": "49 sq cm", "B": "490 sq cm", "C": "4900 sq cm", "D": "49000 sq cm"}, "correct_answer": "C"},
    {"id": 76, "difficulty": "medium", "question": "How many hectares are in 0.65 square kilometers?", "options": {"A": "6.5 hectares", "B": "65 hectares", "C": "650 hectares", "D": "6500 hectares"}, "correct_answer": "B"},
    {"id": 77, "difficulty": "medium", "question": "A rectangular plot is 0.12 km long and 0.08 km wide. What is its area in square meters?", "options": {"A": "96 sq m", "B": "960 sq m", "C": "9600 sq m", "D": "96000 sq m"}, "correct_answer": "C"},
    {"id": 78, "difficulty": "medium", "question": "Convert 0.045 square meters to square centimeters.", "options": {"A": "4.5 sq cm", "B": "45 sq cm", "C": "450 sq cm", "D": "4500 sq cm"}, "correct_answer": "C"},
    {"id": 79, "difficulty": "medium", "question": "A circle has a diameter of 28 cm. What is its circumference in meters? (Use π = 22/7)", "options": {"A": "0.088 m", "B": "0.88 m", "C": "8.8 m", "D": "88 m"}, "correct_answer": "B"},
    {"id": 80, "difficulty": "medium", "question": "Convert 0.3 hectares to square meters.", "options": {"A": "30 sq m", "B": "300 sq m", "C": "3000 sq m", "D": "30000 sq m"}, "correct_answer": "C"},
    
    {"id": 81, "difficulty": "hard", "question": "A rectangular field is 0.45 km long and 0.3 km wide. What is its area in hectares?", "options": {"A": "0.135 hectares", "B": "1.35 hectares", "C": "13.5 hectares", "D": "135 hectares"}, "correct_answer": "C"},
    {"id": 82, "difficulty": "hard", "question": "Convert 2.5 square kilometers to square centimeters.", "options": {"A": "25000000 sq cm", "B": "250000000 sq cm", "C": "2500000000 sq cm", "D": "25000000000 sq cm"}, "correct_answer": "D"},
    {"id": 83, "difficulty": "hard", "question": "A trapezium has parallel sides of 1.2 m and 0.8 m, and height of 0.6 m. What is its area in square centimeters?", "options": {"A": "60 sq cm", "B": "600 sq cm", "C": "6000 sq cm", "D": "60000 sq cm"}, "correct_answer": "B"},
    {"id": 84, "difficulty": "hard", "question": "How many square millimeters are in 0.025 square meters?", "options": {"A": "250 sq mm", "B": "2500 sq mm", "C": "25000 sq mm", "D": "250000 sq mm"}, "correct_answer": "C"},
    {"id": 85, "difficulty": "hard", "question": "A rectangular park is 150 m long and 100 m wide. A path 2.5 m wide runs inside it along the boundary. What is the area of the path in square meters?", "options": {"A": "1175 sq m", "B": "1200 sq m", "C": "1225 sq m", "D": "1250 sq m"}, "correct_answer": "C"},
    {"id": 86, "difficulty": "hard", "question": "Convert 0.0008 square kilometers to square centimeters.", "options": {"A": "8000 sq cm", "B": "80000 sq cm", "C": "800000 sq cm", "D": "8000000 sq cm"}, "correct_answer": "D"},
    {"id": 87, "difficulty": "hard", "question": "A circular garden has a circumference of 88 m. What is its area in hectares? (Use π = 22/7)", "options": {"A": "0.00616 hectares", "B": "0.0616 hectares", "C": "0.616 hectares", "D": "6.16 hectares"}, "correct_answer": "B"},
    {"id": 88, "difficulty": "hard", "question": "A room is 5.4 m long and 4.2 m wide. How many square tiles of side 30 cm are needed to cover the floor?", "options": {"A": "252 tiles", "B": "264 tiles", "C": "276 tiles", "D": "288 tiles"}, "correct_answer": "A"},
    {"id": 89, "difficulty": "hard", "question": "Convert 3.75 hectares to square centimeters.", "options": {"A": "3750000 sq cm", "B": "37500000 sq cm", "C": "375000000 sq cm", "D": "3750000000 sq cm"}, "correct_answer": "C"},
    {"id": 90, "difficulty": "hard", "question": "A rectangular plot is 0.08 km long and 0.06 km wide. What is the cost of fencing it at ₹25 per meter, if a 2 m wide gate is left on one side?", "options": {"A": "₹6800", "B": "₹6900", "C": "₹7000", "D": "₹7100"}, "correct_answer": "B"},
    {"id": 91, "difficulty": "hard", "question": "How many square meters are in 0.00045 square kilometers?", "options": {"A": "4.5 sq m", "B": "45 sq m", "C": "450 sq m", "D": "4500 sq m"}, "correct_answer": "C"},
    {"id": 92, "difficulty": "hard", "question": "A parallelogram has a base of 1.8 m and height of 1.2 m. What is its area in square centimeters?", "options": {"A": "216 sq cm", "B": "2160 sq cm", "C": "21600 sq cm", "D": "216000 sq cm"}, "correct_answer": "B"},
    {"id": 93, "difficulty": "hard", "question": "Convert 0.00006 square kilometers to square millimeters.", "options": {"A": "6000000 sq mm", "B": "60000000 sq mm", "C": "600000000 sq mm", "D": "6000000000 sq mm"}, "correct_answer": "B"},
    {"id": 94, "difficulty": "hard", "question": "A rectangular field is 0.25 km long and 0.18 km wide. What is the cost of leveling it at ₹50 per square meter?", "options": {"A": "₹225000", "B": "₹235000", "C": "₹245000", "D": "₹255000"}, "correct_answer": "A"},
    {"id": 95, "difficulty": "hard", "question": "A circle has an area of 0.385 square meters. What is its radius in centimeters? (Use π = 22/7)", "options": {"A": "3.5 cm", "B": "35 cm", "C": "350 cm", "D": "3500 cm"}, "correct_answer": "B"},
    {"id": 96, "difficulty": "hard", "question": "Convert 850000000 square millimeters to square meters.", "options": {"A": "8.5 sq m", "B": "85 sq m", "C": "850 sq m", "D": "8500 sq m"}, "correct_answer": "C"},
    {"id": 97, "difficulty": "hard", "question": "A rhombus has diagonals of 1.6 m and 1.2 m. What is its area in square centimeters?", "options": {"A": "96 sq cm", "B": "960 sq cm", "C": "9600 sq cm", "D": "96000 sq cm"}, "correct_answer": "B"},
    {"id": 98, "difficulty": "hard", "question": "How many hectares are in 0.00075 square kilometers?", "options": {"A": "0.000075 hectares", "B": "0.00075 hectares", "C": "0.0075 hectares", "D": "0.075 hectares"}, "correct_answer": "D"},
    {"id": 99, "difficulty": "hard", "question": "A rectangular sheet of metal is 2.4 m long and 1.8 m wide. Square pieces of side 15 cm are cut from it. How many complete pieces can be cut?", "options": {"A": "182 pieces", "B": "188 pieces", "C": "192 pieces", "D": "196 pieces"}, "correct_answer": "C"},
    {"id": 100, "difficulty": "hard", "question": "Convert 0.000012 square kilometers to square centimeters.", "options": {"A": "120 sq cm", "B": "1200 sq cm", "C": "12000 sq cm", "D": "120000 sq cm"}, "correct_answer": "D"}
  ,

    {"id":101,"difficulty":"easy","question":"Convert 9 meters to centimeters.","options":{"A":"90 cm","B":"900 cm","C":"9000 cm","D":"9 cm"},"correct_answer":"B"},
    {"id":102,"difficulty":"easy","question":"How many millimeters are there in 6 centimeters?","options":{"A":"6 mm","B":"60 mm","C":"600 mm","D":"6000 mm"},"correct_answer":"B"},
    {"id":103,"difficulty":"easy","question":"Convert 1.5 kilometers to meters.","options":{"A":"150 m","B":"1500 m","C":"15000 m","D":"15 m"},"correct_answer":"B"},
    {"id":104,"difficulty":"easy","question":"How many square centimeters are there in 2 square meters?","options":{"A":"200 sq cm","B":"2000 sq cm","C":"20000 sq cm","D":"200000 sq cm"},"correct_answer":"C"},
    {"id":105,"difficulty":"easy","question":"Convert 750 grams to kilograms.","options":{"A":"0.075 kg","B":"0.75 kg","C":"7.5 kg","D":"75 kg"},"correct_answer":"B"},
    {"id":106,"difficulty":"easy","question":"Convert 4.2 meters to centimeters.","options":{"A":"42 cm","B":"420 cm","C":"4200 cm","D":"4.2 cm"},"correct_answer":"B"},
    {"id":107,"difficulty":"easy","question":"How many milliliters are there in 2 liters?","options":{"A":"20 ml","B":"200 ml","C":"2000 ml","D":"20000 ml"},"correct_answer":"C"},
    {"id":108,"difficulty":"easy","question":"Convert 3000 millimeters to meters.","options":{"A":"0.3 m","B":"3 m","C":"30 m","D":"300 m"},"correct_answer":"B"},
    {"id":109,"difficulty":"easy","question":"Convert 0.6 kilograms to grams.","options":{"A":"6 g","B":"60 g","C":"600 g","D":"6000 g"},"correct_answer":"C"},
    {"id":110,"difficulty":"easy","question":"How many centimeters are there in 2.75 meters?","options":{"A":"27.5 cm","B":"275 cm","C":"2750 cm","D":"27500 cm"},"correct_answer":"B"},
    {"id":111,"difficulty":"easy","question":"Convert 1 square meter to square millimeters.","options":{"A":"1000 sq mm","B":"10000 sq mm","C":"100000 sq mm","D":"1000000 sq mm"},"correct_answer":"D"},
    {"id":112,"difficulty":"easy","question":"Convert 5.5 liters to milliliters.","options":{"A":"55 ml","B":"550 ml","C":"5500 ml","D":"55000 ml"},"correct_answer":"C"},
    {"id":113,"difficulty":"easy","question":"How many meters are there in 450 centimeters?","options":{"A":"0.45 m","B":"4.5 m","C":"45 m","D":"450 m"},"correct_answer":"B"},
    {"id":114,"difficulty":"easy","question":"Convert 12000 square centimeters to square meters.","options":{"A":"0.12 sq m","B":"1.2 sq m","C":"12 sq m","D":"120 sq m"},"correct_answer":"A"},
    {"id":115,"difficulty":"easy","question":"Convert 0.9 kilograms to grams.","options":{"A":"90 g","B":"900 g","C":"9000 g","D":"9 g"},"correct_answer":"B"},
    {"id":116,"difficulty":"easy","question":"How many millimeters are there in 3.5 meters?","options":{"A":"35 mm","B":"350 mm","C":"3500 mm","D":"35000 mm"},"correct_answer":"C"},
    {"id":117,"difficulty":"easy","question":"Convert 2500 milliliters to liters.","options":{"A":"0.25 L","B":"2.5 L","C":"25 L","D":"250 L"},"correct_answer":"B"},
    {"id":118,"difficulty":"easy","question":"How many square meters are there in 50000 square centimeters?","options":{"A":"0.5 sq m","B":"5 sq m","C":"50 sq m","D":"500 sq m"},"correct_answer":"A"},
    {"id":119,"difficulty":"easy","question":"Convert 7.2 km to meters.","options":{"A":"72 m","B":"720 m","C":"7200 m","D":"72000 m"},"correct_answer":"C"},
    {"id":120,"difficulty":"easy","question":"Convert 1.25 meters to centimeters.","options":{"A":"12.5 cm","B":"125 cm","C":"1250 cm","D":"12500 cm"},"correct_answer":"B"},

    {"id":121,"difficulty":"medium","question":"A rectangle is 2.4 m long and 1.6 m wide. What is its area in square centimeters?","options":{"A":"384 sq cm","B":"3840 sq cm","C":"38400 sq cm","D":"384000 sq cm"},"correct_answer":"C"},
    {"id":122,"difficulty":"medium","question":"Convert 0.18 hectares to square meters.","options":{"A":"180 sq m","B":"1800 sq m","C":"18000 sq m","D":"180000 sq m"},"correct_answer":"C"},
    {"id":123,"difficulty":"medium","question":"A square has side 40 cm. What is its perimeter in meters?","options":{"A":"0.16 m","B":"1.6 m","C":"16 m","D":"160 m"},"correct_answer":"B"},
    {"id":124,"difficulty":"medium","question":"Convert 6400 square centimeters to square meters.","options":{"A":"0.064 sq m","B":"0.64 sq m","C":"6.4 sq m","D":"64 sq m"},"correct_answer":"A"},
    {"id":125,"difficulty":"medium","question":"A rectangular park is 150 m long and 80 m wide. What is its area in hectares?","options":{"A":"0.12 ha","B":"1.2 ha","C":"12 ha","D":"120 ha"},"correct_answer":"B"},
    {"id":126,"difficulty":"medium","question":"Convert 0.045 square kilometers to square meters.","options":{"A":"450 sq m","B":"4500 sq m","C":"45000 sq m","D":"450000 sq m"},"correct_answer":"C"},
    {"id":127,"difficulty":"medium","question":"A triangle has base 0.9 m and height 0.6 m. What is its area in square centimeters?","options":{"A":"27 sq cm","B":"270 sq cm","C":"2700 sq cm","D":"27000 sq cm"},"correct_answer":"C"},
    {"id":128,"difficulty":"medium","question":"Convert 360000 square centimeters to square meters.","options":{"A":"3.6 sq m","B":"36 sq m","C":"360 sq m","D":"3600 sq m"},"correct_answer":"A"},
    {"id":129,"difficulty":"medium","question":"A rectangular field is 0.5 km long and 0.2 km wide. What is its perimeter in meters?","options":{"A":"1000 m","B":"1400 m","C":"2000 m","D":"2800 m"},"correct_answer":"B"},
    {"id":130,"difficulty":"medium","question":"Convert 0.75 square meters to square centimeters.","options":{"A":"750 sq cm","B":"7500 sq cm","C":"75000 sq cm","D":"750000 sq cm"},"correct_answer":"C"},

    {"id":131,"difficulty":"hard","question":"A rectangular plot is 0.6 km long and 0.35 km wide. What is its area in hectares?","options":{"A":"2.1 ha","B":"21 ha","C":"210 ha","D":"2100 ha"},"correct_answer":"B"},
    {"id":132,"difficulty":"hard","question":"Convert 1.8 square kilometers to square centimeters.","options":{"A":"18000000000 sq cm","B":"1800000000 sq cm","C":"180000000 sq cm","D":"18000000 sq cm"},"correct_answer":"A"},
    {"id":133,"difficulty":"hard","question":"A square floor has area 12.25 sq m. What is its perimeter in centimeters?","options":{"A":"700 cm","B":"1400 cm","C":"350 cm","D":"490 cm"},"correct_answer":"A"},
    {"id":134,"difficulty":"hard","question":"Convert 0.0025 square kilometers to square meters.","options":{"A":"250 sq m","B":"2500 sq m","C":"25000 sq m","D":"250000 sq m"},"correct_answer":"C"},
    {"id":135,"difficulty":"hard","question":"A circular garden has radius 14 m. What is its area in hectares? (π = 22/7)","options":{"A":"0.00616 ha","B":"0.0616 ha","C":"0.616 ha","D":"6.16 ha"},"correct_answer":"B"},
    {"id":136,"difficulty":"hard","question":"Convert 0.0009 square kilometers to square centimeters.","options":{"A":"9000000 sq cm","B":"90000000 sq cm","C":"900000000 sq cm","D":"9000000000 sq cm"},"correct_answer":"D"},
    {"id":137,"difficulty":"hard","question":"A rectangular hall is 18 m long and 12 m wide. How many square tiles of side 60 cm are required to cover it?","options":{"A":"600","B":"540","C":"480","D":"720"},"correct_answer":"C"},
    {"id":138,"difficulty":"hard","question":"Convert 2.4 hectares to square millimeters.","options":{"A":"240000000 sq mm","B":"2400000000 sq mm","C":"24000000 sq mm","D":"24000000000 sq mm"},"correct_answer":"B"},
    {"id":139,"difficulty":"hard","question":"A square park has perimeter 0.8 km. What is its area in square meters?","options":{"A":"40000 sq m","B":"160000 sq m","C":"640000 sq m","D":"2560000 sq m"},"correct_answer":"B"},
    {"id":140,"difficulty":"hard","question":"Convert 0.015 square kilometers to hectares.","options":{"A":"0.15 ha","B":"1.5 ha","C":"15 ha","D":"150 ha"},"correct_answer":"C"},
    {"id":141,"difficulty":"hard","question":"A rectangle is 125 m long and 80 m wide. What is the cost of fencing it at ₹12 per meter?","options":{"A":"₹4080","B":"₹4920","C":"₹6120","D":"₹7200"},"correct_answer":"B"},
    {"id":142,"difficulty":"hard","question":"Convert 3750000 square centimeters to square meters.","options":{"A":"37.5 sq m","B":"375 sq m","C":"3.75 sq m","D":"0.375 sq m"},"correct_answer":"A"},
    {"id":143,"difficulty":"hard","question":"A circular path has circumference 176 m. What is its radius in meters? (π = 22/7)","options":{"A":"14 m","B":"21 m","C":"28 m","D":"35 m"},"correct_answer":"C"},
    {"id":144,"difficulty":"hard","question":"Convert 0.000125 square kilometers to square meters.","options":{"A":"12.5 sq m","B":"125 sq m","C":"1250 sq m","D":"12500 sq m"},"correct_answer":"C"},
    {"id":145,"difficulty":"hard","question":"A rectangular garden is 90 m long and 40 m wide. A 3 m wide path runs all around inside. Find area of path.","options":{"A":"756 sq m","B":"864 sq m","C":"960 sq m","D":"1080 sq m"},"correct_answer":"B"},
    {"id":146,"difficulty":"hard","question":"Convert 0.00036 square kilometers to square centimeters.","options":{"A":"36000000 sq cm","B":"360000000 sq cm","C":"3600000000 sq cm","D":"36000000000 sq cm"},"correct_answer":"D"},
    {"id":147,"difficulty":"hard","question":"A square sheet has area 1.44 sq m. What is its side length in centimeters?","options":{"A":"60 cm","B":"100 cm","C":"120 cm","D":"140 cm"},"correct_answer":"C"},
    {"id":148,"difficulty":"hard","question":"Convert 5.75 hectares to square meters.","options":{"A":"575 sq m","B":"5750 sq m","C":"57500 sq m","D":"575000 sq m"},"correct_answer":"C"},
    {"id":149,"difficulty":"hard","question":"A rectangular playground is 0.18 km long and 0.12 km wide. What is its area in square meters?","options":{"A":"2160 sq m","B":"21600 sq m","C":"216000 sq m","D":"2160000 sq m"},"correct_answer":"B"},
    {"id":150,"difficulty":"hard","question":"Convert 0.000004 square kilometers to square centimeters.","options":{"A":"40000 sq cm","B":"400000 sq cm","C":"4000000 sq cm","D":"40000000 sq cm"},"correct_answer":"D"}
]
}