{
  "title": "Weight & Mass (Measurement) - Grade 5",
  "total_questions": 100,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "How many grams are there in 2 kilograms?", "options": {"A": "200 g", "B": "1000 g", "C": "2000 g", "D": "20 g"}, "correct_answer": "C"},
    {"id": 2, "difficulty": "easy", "question": "What is 1.5 kg + 500 g?", "options": {"A": "1.8 kg", "B": "2.0 kg", "C": "2.2 kg", "D": "2.5 kg"}, "correct_answer": "B"},
    {"id": 3, "difficulty": "easy", "question": "Convert 3000 grams to kilograms.", "options": {"A": "0.3 kg", "B": "3 kg", "C": "30 kg", "D": "300 kg"}, "correct_answer": "B"},
    {"id": 4, "difficulty": "easy", "question": "If a bag weighs 2.5 kg, what is its weight in grams?", "options": {"A": "250 g", "B": "2500 g", "C": "25 g", "D": "2550 g"}, "correct_answer": "B"},
    {"id": 5, "difficulty": "easy", "question": "What is 750 g + 250 g?", "options": {"A": "900 g", "B": "950 g", "C": "1000 g", "D": "1050 g"}, "correct_answer": "C"},
    {"id": 6, "difficulty": "easy", "question": "Subtract: 4 kg - 1.2 kg", "options": {"A": "2.6 kg", "B": "2.7 kg", "C": "2.8 kg", "D": "2.9 kg"}, "correct_answer": "C"},
    {"id": 7, "difficulty": "easy", "question": "How many 250 g packets make 1 kg?", "options": {"A": "2", "B": "3", "C": "4", "D": "5"}, "correct_answer": "C"},
    {"id": 8, "difficulty": "easy", "question": "Add: 1.2 kg + 800 g", "options": {"A": "1.9 kg", "B": "2.0 kg", "C": "2.1 kg", "D": "2.2 kg"}, "correct_answer": "B"},
    {"id": 9, "difficulty": "easy", "question": "A box weighs 500 g. What is the weight of 4 such boxes?", "options": {"A": "1.5 kg", "B": "2.0 kg", "C": "2.5 kg", "D": "3.0 kg"}, "correct_answer": "B"},
    {"id": 10, "difficulty": "easy", "question": "Convert 4.5 kg to grams.", "options": {"A": "4050 g", "B": "4500 g", "C": "4550 g", "D": "5000 g"}, "correct_answer": "B"},
    {"id": 11, "difficulty": "easy", "question": "What is 3 kg 200 g + 1 kg 800 g?", "options": {"A": "4 kg 500 g", "B": "5 kg", "C": "5 kg 200 g", "D": "5 kg 500 g"}, "correct_answer": "B"},
    {"id": 12, "difficulty": "easy", "question": "Subtract 1.5 kg from 3 kg.", "options": {"A": "1.2 kg", "B": "1.3 kg", "C": "1.4 kg", "D": "1.5 kg"}, "correct_answer": "D"},
    {"id": 13, "difficulty": "easy", "question": "How many grams are in half a kilogram?", "options": {"A": "50 g", "B": "100 g", "C": "250 g", "D": "500 g"}, "correct_answer": "D"},
    {"id": 14, "difficulty": "easy", "question": "A packet of sugar weighs 1 kg. How much will 3 such packets weigh?", "options": {"A": "2 kg", "B": "3 kg", "C": "4 kg", "D": "5 kg"}, "correct_answer": "B"},
    {"id": 15, "difficulty": "easy", "question": "What is 2.25 kg - 1.75 kg?", "options": {"A": "0.4 kg", "B": "0.5 kg", "C": "0.6 kg", "D": "0.7 kg"}, "correct_answer": "B"},
    {"id": 16, "difficulty": "easy", "question": "Add 600 g and 1.4 kg.", "options": {"A": "1.8 kg", "B": "2.0 kg", "C": "2.2 kg", "D": "2.4 kg"}, "correct_answer": "B"},
    {"id": 17, "difficulty": "easy", "question": "A book weighs 350 g. What is the weight of 2 such books?", "options": {"A": "600 g", "B": "650 g", "C": "700 g", "D": "750 g"}, "correct_answer": "C"},
    {"id": 18, "difficulty": "easy", "question": "Convert 1250 g to kilograms.", "options": {"A": "1.25 kg", "B": "1.5 kg", "C": "12.5 kg", "D": "125 kg"}, "correct_answer": "A"},
    {"id": 19, "difficulty": "easy", "question": "What is 5 kg - 2.3 kg?", "options": {"A": "2.5 kg", "B": "2.6 kg", "C": "2.7 kg", "D": "2.8 kg"}, "correct_answer": "C"},
    {"id": 20, "difficulty": "easy", "question": "A bag of rice weighs 5 kg. How many grams is that?", "options": {"A": "50 g", "B": "500 g", "C": "5000 g", "D": "50,000 g"}, "correct_answer": "C"},
    {"id": 21, "difficulty": "medium", "question": "A box contains 24 packets, each weighing 250 g. What is the total weight of the box in kilograms?", "options": {"A": "5 kg", "B": "5.5 kg", "C": "6 kg", "D": "6.5 kg"}, "correct_answer": "C"},
    {"id": 22, "difficulty": "medium", "question": "The weight of 1 chocolate is 15 g. How many chocolates are there in a box weighing 1.2 kg?", "options": {"A": "70", "B": "75", "C": "80", "D": "85"}, "correct_answer": "C"},
    {"id": 23, "difficulty": "medium", "question": "A fruit seller had 50 kg of apples. He sold 28 kg 500 g. How much weight of apples is left?", "options": {"A": "21 kg 200 g", "B": "21 kg 300 g", "C": "21 kg 400 g", "D": "21 kg 500 g"}, "correct_answer": "D"},
    {"id": 24, "difficulty": "medium", "question": "A bag weighs 3.75 kg when empty. When filled with sand, it weighs 12.5 kg. What is the weight of the sand?", "options": {"A": "8.25 kg", "B": "8.5 kg", "C": "8.75 kg", "D": "9.0 kg"}, "correct_answer": "C"},
    {"id": 25, "difficulty": "medium", "question": "If 8 identical books weigh 6 kg, what is the weight of 1 book in grams?", "options": {"A": "650 g", "B": "700 g", "C": "750 g", "D": "800 g"}, "correct_answer": "C"},
    {"id": 26, "difficulty": "medium", "question": "A truck carries 150 boxes, each weighing 15 kg. What is the total weight in metric tonnes? (1 tonne = 1000 kg)", "options": {"A": "2.15 tonnes", "B": "2.25 tonnes", "C": "2.35 tonnes", "D": "2.45 tonnes"}, "correct_answer": "B"},
    {"id": 27, "difficulty": "medium", "question": "A baby elephant weighed 125 kg at birth. After one year, its weight became 250 kg. How much weight did it gain?", "options": {"A": "115 kg", "B": "120 kg", "C": "125 kg", "D": "130 kg"}, "correct_answer": "C"},
    {"id": 28, "difficulty": "medium", "question": "A recipe needs 2.5 kg of flour. If you have 1 kg 200 g, how much more flour do you need?", "options": {"A": "1.2 kg", "B": "1.3 kg", "C": "1.4 kg", "D": "1.5 kg"}, "correct_answer": "B"},
    {"id": 29, "difficulty": "medium", "question": "The total weight of 5 people is 325 kg. What is their average weight?", "options": {"A": "60 kg", "B": "62 kg", "C": "64 kg", "D": "65 kg"}, "correct_answer": "D"},
    {"id": 30, "difficulty": "medium", "question": "A packet of biscuits weighs 1.2 kg. If each biscuit weighs 15 g, how many biscuits are in the packet?", "options": {"A": "70", "B": "75", "C": "80", "D": "85"}, "correct_answer": "C"},
    {"id": 31, "difficulty": "medium", "question": "A shopkeeper sold 15 kg of sugar on Monday, 22 kg 500 g on Tuesday, and 18 kg 750 g on Wednesday. How much sugar did he sell in these three days?", "options": {"A": "55 kg 250 g", "B": "56 kg 250 g", "C": "57 kg 250 g", "D": "58 kg 250 g"}, "correct_answer": "B"},
    {"id": 32, "difficulty": "medium", "question": "A box of 12 soap bars weighs 1 kg 800 g. If the empty box weighs 300 g, what is the weight of one soap bar?", "options": {"A": "115 g", "B": "120 g", "C": "125 g", "D": "130 g"}, "correct_answer": "C"},
    {"id": 33, "difficulty": "medium", "question": "A bag of wheat weighs 45 kg. How many such bags can be loaded in a truck that can carry 9000 kg?", "options": {"A": "190", "B": "195", "C": "200", "D": "205"}, "correct_answer": "C"},
    {"id": 34, "difficulty": "medium", "question": "If 1 kg of grapes costs ₹120, what is the cost of 750 g?", "options": {"A": "₹80", "B": "₹85", "C": "₹90", "D": "₹95"}, "correct_answer": "C"},
    {"id": 35, "difficulty": "medium", "question": "A man weighs 72 kg 500 g. His wife weighs 58 kg 750 g. What is their combined weight?", "options": {"A": "130 kg 250 g", "B": "131 kg 250 g", "C": "131 kg 500 g", "D": "132 kg 250 g"}, "correct_answer": "B"},
    {"id": 36, "difficulty": "medium", "question": "The weight of a watermelon is 4 kg 200 g. The weight of a pineapple is 1 kg 750 g. How much heavier is the watermelon?", "options": {"A": "2 kg 350 g", "B": "2 kg 400 g", "C": "2 kg 450 g", "D": "2 kg 500 g"}, "correct_answer": "C"},
    {"id": 37, "difficulty": "medium", "question": "A container holds 25 kg of oil. If 13 kg 750 g is used, how much oil is left?", "options": {"A": "10 kg 250 g", "B": "11 kg 250 g", "C": "11 kg 500 g", "D": "12 kg 250 g"}, "correct_answer": "B"},
    {"id": 38, "difficulty": "medium", "question": "A baby gains 1 kg 200 g in one month. If its weight was 4 kg 500 g at the beginning of the month, what is its new weight?", "options": {"A": "5 kg 600 g", "B": "5 kg 700 g", "C": "5 kg 800 g", "D": "5 kg 900 g"}, "correct_answer": "B"},
    {"id": 39, "difficulty": "medium", "question": "A bag of cement weighs 50 kg. What is the weight of 15 such bags in tonnes?", "options": {"A": "0.5 tonnes", "B": "0.6 tonnes", "C": "0.7 tonnes", "D": "0.75 tonnes"}, "correct_answer": "D"},
    {"id": 40, "difficulty": "medium", "question": "If 5 packets of chips weigh 1 kg 250 g, what is the weight of 1 packet?", "options": {"A": "220 g", "B": "230 g", "C": "240 g", "D": "250 g"}, "correct_answer": "D"},
    {"id": 41, "difficulty": "medium", "question": "A crate contains 24 bottles, each weighing 1 kg 200 g. What is the total weight of the crate if the empty crate weighs 3 kg?", "options": {"A": "30 kg 600 g", "B": "31 kg 800 g", "C": "32 kg 600 g", "D": "33 kg 800 g"}, "correct_answer": "B"},
    {"id": 42, "difficulty": "medium", "question": "A box of 50 identical items weighs 12 kg 500 g. What is the weight of each item?", "options": {"A": "220 g", "B": "230 g", "C": "240 g", "D": "250 g"}, "correct_answer": "D"},
    {"id": 43, "difficulty": "medium", "question": "A shopkeeper bought 100 kg of rice. He sold 45 kg 500 g. How much rice is left?", "options": {"A": "54 kg 400 g", "B": "54 kg 500 g", "C": "55 kg 400 g", "D": "55 kg 500 g"}, "correct_answer": "B"},
    {"id": 44, "difficulty": "medium", "question": "The weight of 1 liter of water is 1 kg. What is the weight of 2.5 liters of water?", "options": {"A": "2.2 kg", "B": "2.3 kg", "C": "2.4 kg", "D": "2.5 kg"}, "correct_answer": "D"},
    {"id": 45, "difficulty": "medium", "question": "A person's weight is 65 kg 400 g. After exercise, he loses 2 kg 300 g. What is his new weight?", "options": {"A": "62 kg 900 g", "B": "63 kg 100 g", "C": "63 kg 200 g", "D": "63 kg 300 g"}, "correct_answer": "B"},
    {"id": 46, "difficulty": "medium", "question": "A bag of fruits weighs 3 kg 750 g. If the bag alone weighs 250 g, what is the net weight of the fruits?", "options": {"A": "3 kg 400 g", "B": "3 kg 450 g", "C": "3 kg 500 g", "D": "3 kg 550 g"}, "correct_answer": "C"},
    {"id": 47, "difficulty": "medium", "question": "If 1 kg of almonds costs ₹800, what is the cost of 250 g?", "options": {"A": "₹180", "B": "₹190", "C": "₹200", "D": "₹210"}, "correct_answer": "C"},
    {"id": 48, "difficulty": "medium", "question": "A truck carries 2 tonnes of sand. How many kg is that?", "options": {"A": "1500 kg", "B": "1800 kg", "C": "2000 kg", "D": "2200 kg"}, "correct_answer": "C"},
    {"id": 49, "difficulty": "medium", "question": "A baby weighed 3.2 kg at birth. After 3 months, she weighs 5.8 kg. How much weight has she gained?", "options": {"A": "2.4 kg", "B": "2.5 kg", "C": "2.6 kg", "D": "2.7 kg"}, "correct_answer": "C"},
    {"id": 50, "difficulty": "medium", "question": "A box of 12 eggs weighs 720 g. What is the weight of one egg?", "options": {"A": "55 g", "B": "58 g", "C": "60 g", "D": "62 g"}, "correct_answer": "C"},
    {"id": 51, "difficulty": "medium", "question": "A bag contains 4 kg 500 g of flour. If 2 kg 750 g is used for baking, how much flour is left?", "options": {"A": "1 kg 650 g", "B": "1 kg 700 g", "C": "1 kg 750 g", "D": "1 kg 800 g"}, "correct_answer": "C"},
    {"id": 52, "difficulty": "medium", "question": "The total weight of 8 students is 360 kg. What is the average weight per student?", "options": {"A": "44 kg", "B": "44.5 kg", "C": "45 kg", "D": "45.5 kg"}, "correct_answer": "C"},
    {"id": 53, "difficulty": "medium", "question": "A packet of 10 pencils weighs 120 g. What is the weight of 25 such pencils?", "options": {"A": "280 g", "B": "290 g", "C": "300 g", "D": "310 g"}, "correct_answer": "C"},
    {"id": 54, "difficulty": "medium", "question": "A box of 24 chocolate bars weighs 3 kg 600 g. What is the weight of one chocolate bar?", "options": {"A": "140 g", "B": "145 g", "C": "150 g", "D": "155 g"}, "correct_answer": "C"},
    {"id": 55, "difficulty": "medium", "question": "A sack of potatoes weighs 40 kg. If 15 kg 750 g is sold, how much is left?", "options": {"A": "23 kg 250 g", "B": "24 kg 250 g", "C": "24 kg 500 g", "D": "25 kg 250 g"}, "correct_answer": "B"},
    {"id": 56, "difficulty": "medium", "question": "If 1 kg of tomatoes has 8 tomatoes, how many tomatoes are there in 3.5 kg?", "options": {"A": "26", "B": "27", "C": "28", "D": "29"}, "correct_answer": "C"},
    {"id": 57, "difficulty": "medium", "question": "A person buys 2 kg 500 g of apples, 1 kg 750 g of oranges, and 3 kg of bananas. What is the total weight of fruits bought?", "options": {"A": "7 kg 150 g", "B": "7 kg 200 g", "C": "7 kg 250 g", "D": "7 kg 300 g"}, "correct_answer": "C"},
    {"id": 58, "difficulty": "medium", "question": "A box with 15 books weighs 9 kg. If the empty box weighs 1.5 kg, what is the average weight of one book?", "options": {"A": "450 g", "B": "480 g", "C": "500 g", "D": "520 g"}, "correct_answer": "C"},
    {"id": 59, "difficulty": "medium", "question": "A bag of rice weighs 25 kg. How many such bags are needed to have 1 tonne of rice?", "options": {"A": "35", "B": "38", "C": "40", "D": "42"}, "correct_answer": "C"},
    {"id": 60, "difficulty": "medium", "question": "The weight of a metal ball is 450 g. What is the weight of 12 such balls in kg?", "options": {"A": "5.2 kg", "B": "5.3 kg", "C": "5.4 kg", "D": "5.5 kg"}, "correct_answer": "C"},
    {"id": 61, "difficulty": "medium", "question": "A shopkeeper had 50 kg of sugar. He sold 18 kg 500 g in the morning and 15 kg 750 g in the evening. How much sugar is left?", "options": {"A": "15 kg 650 g", "B": "15 kg 750 g", "C": "16 kg 650 g", "D": "16 kg 750 g"}, "correct_answer": "B"},
    {"id": 62, "difficulty": "medium", "question": "If 1 kg of pulses costs ₹90, what is the cost of 5 kg 500 g?", "options": {"A": "₹485", "B": "₹490", "C": "₹495", "D": "₹500"}, "correct_answer": "C"},
    {"id": 63, "difficulty": "medium", "question": "A box of 50 soap cakes weighs 12 kg 500 g. What is the weight of one soap cake?", "options": {"A": "240 g", "B": "245 g", "C": "250 g", "D": "255 g"}, "correct_answer": "C"},
    {"id": 64, "difficulty": "medium", "question": "A baby weighed 4.25 kg at birth. After 6 months, she weighs 8.75 kg. How much weight has she gained?", "options": {"A": "4.25 kg", "B": "4.35 kg", "C": "4.45 kg", "D": "4.5 kg"}, "correct_answer": "D"},
    {"id": 65, "difficulty": "medium", "question": "A bag of wheat weighs 75 kg. How many such bags can be loaded in a truck that can carry 3000 kg?", "options": {"A": "38", "B": "39", "C": "40", "D": "41"}, "correct_answer": "C"},
    {"id": 66, "difficulty": "medium", "question": "The weight of 1 cubic cm of water is 1 g. What is the weight of 1 liter of water in kg?", "options": {"A": "0.5 kg", "B": "1 kg", "C": "1.5 kg", "D": "2 kg"}, "correct_answer": "B"},
    {"id": 67, "difficulty": "medium", "question": "A box contains 20 packets of biscuits, each weighing 150 g. What is the total weight of the box in kg?", "options": {"A": "2.8 kg", "B": "3.0 kg", "C": "3.2 kg", "D": "3.4 kg"}, "correct_answer": "B"},
    {"id": 68, "difficulty": "medium", "question": "A man weighs 80 kg. His son weighs 35 kg 500 g. What is the difference in their weights?", "options": {"A": "44 kg 400 g", "B": "44 kg 500 g", "C": "45 kg 400 g", "D": "45 kg 500 g"}, "correct_answer": "B"},
    {"id": 69, "difficulty": "medium", "question": "A bag of cement weighs 25 kg. What is the weight of 12 such bags in tonnes?", "options": {"A": "0.2 tonnes", "B": "0.3 tonnes", "C": "0.4 tonnes", "D": "0.5 tonnes"}, "correct_answer": "B"},
    {"id": 70, "difficulty": "medium", "question": "If 10 identical boxes weigh 75 kg, what is the weight of one box?", "options": {"A": "7.2 kg", "B": "7.3 kg", "C": "7.4 kg", "D": "7.5 kg"}, "correct_answer": "D"},
    {
  "id": 71,
  "difficulty": "medium",
  "question": "A crate of 24 bottles of oil weighs 30 kg. If each bottle contains 1 liter of oil and the empty crate weighs 2 kg, what is the weight of one empty bottle?",
  "options": {
    "A": "150 g",
    "B": "160 g",
    "C": "170 g",
    "D": "180 g"
  },
  "correct_answer": "C"
}
,  {"id": 72, "difficulty": "medium", "question": "A shopkeeper sold 25 kg 500 g of sugar on Monday and 32 kg 750 g on Tuesday. How much more sugar did he sell on Tuesday?", "options": {"A": "7 kg 150 g", "B": "7 kg 200 g", "C": "7 kg 250 g", "D": "7 kg 300 g"}, "correct_answer": "C"},
    {"id": 73, "difficulty": "medium", "question": "The weight of a dictionary is 1 kg 200 g. What is the weight of 5 such dictionaries?", "options": {"A": "5 kg 800 g", "B": "6 kg", "C": "6 kg 200 g", "D": "6 kg 400 g"}, "correct_answer": "B"},
    {"id": 74, "difficulty": "medium", "question": "A bag contains 10 kg of rice. If 3 kg 750 g is used, how much rice is left?", "options": {"A": "6 kg 150 g", "B": "6 kg 200 g", "C": "6 kg 250 g", "D": "6 kg 300 g"}, "correct_answer": "C"},
    {"id": 75, "difficulty": "medium", "question": "If 1 kg of cheese costs ₹450, what is the cost of 600 g?", "options": {"A": "₹260", "B": "₹265", "C": "₹270", "D": "₹275"}, "correct_answer": "C"},
    {"id": 76, "difficulty": "medium", "question": "A box of 50 notebooks weighs 10 kg. What is the weight of one notebook?", "options": {"A": "180 g", "B": "190 g", "C": "200 g", "D": "210 g"}, "correct_answer": "C"},
    {"id": 77, "difficulty": "medium", "question": "A person's weight was 68 kg. He gained 2 kg 500 g. What is his new weight?", "options": {"A": "70 kg 300 g", "B": "70 kg 400 g", "C": "70 kg 500 g", "D": "70 kg 600 g"}, "correct_answer": "C"},
    {"id": 78, "difficulty": "medium", "question": "A bag of fruits weighs 4 kg 800 g. If the bag alone weighs 300 g, what is the net weight of the fruits?", "options": {"A": "4 kg 400 g", "B": "4 kg 450 g", "C": "4 kg 500 g", "D": "4 kg 550 g"}, "correct_answer": "C"},
    {"id": 79, "difficulty": "medium", "question": "The total weight of 6 boxes is 42 kg. What is the weight of 10 such boxes?", "options": {"A": "68 kg", "B": "69 kg", "C": "70 kg", "D": "71 kg"}, "correct_answer": "C"},
    {"id": 80, "difficulty": "medium", "question": "A baby weighed 3.5 kg at birth. After 4 months, she weighs 6.8 kg. How much weight has she gained?", "options": {"A": "3.1 kg", "B": "3.2 kg", "C": "3.3 kg", "D": "3.4 kg"}, "correct_answer": "C"},
  {
  "id": 81,
  "difficulty": "hard",
  "question": "A shopkeeper mixes 15 kg of sugar costing ₹40 per kg with 25 kg of sugar costing ₹35 per kg. What is the cost of the mixture per kg?",
  "options": {
    "A": "₹36.25",
    "B": "₹36.50",
    "C": "₹36.75",
    "D": "₹36.88"
  },
  "correct_answer": "D"
}
,  {"id": 82, "difficulty": "hard", "question": "The weight of an empty box is 2 kg 300 g. When filled with apples, it weighs 15 kg 700 g. If the apples are packed in 10 packets of equal weight, what is the weight of each packet?", "options": {"A": "1 kg 320 g", "B": "1 kg 330 g", "C": "1 kg 340 g", "D": "1 kg 350 g"}, "correct_answer": "C"},
    {"id": 83, "difficulty": "hard", "question": "A container has 20 liters of oil. If 1 liter of oil weighs 910 grams, what is the total weight of the oil in kg?", "options": {"A": "17.8 kg", "B": "18.0 kg", "C": "18.2 kg", "D": "18.4 kg"}, "correct_answer": "C"},
   {
  "id": 84,
  "difficulty": "hard",
  "question": "A man bought 5 kg of rice at ₹50 per kg and 4 kg of rice at ₹55 per kg. He mixed them and sold the mixture at ₹60 per kg. What was his total profit?",
  "options": {
    "A": "₹60",
    "B": "₹70",
    "C": "₹80",
    "D": "₹90"
  },
  "correct_answer": "B"
}
,  {"id": 85, "difficulty": "hard", "question": "The average weight of 5 children is 38 kg. If one child weighing 42 kg leaves, what is the average weight of the remaining children?", "options": {"A": "36 kg", "B": "37 kg", "C": "37.5 kg", "D": "38 kg"}, "correct_answer": "B"},
    {"id": 86, "difficulty": "hard", "question": "A box contains 24 identical items. If the total weight is 18 kg 240 g, and the empty box weighs 1 kg 200 g, what is the weight of one item?", "options": {"A": "680 g", "B": "700 g", "C": "710 g", "D": "720 g"}, "correct_answer": "C"},
    {"id": 87, "difficulty": "hard", "question": "A person's weight on the Moon is 1/6 of his weight on Earth. If a person weighs 72 kg on Earth, what is his weight on the Moon?", "options": {"A": "10 kg", "B": "11 kg", "C": "12 kg", "D": "13 kg"}, "correct_answer": "C"},
    {"id": 88, "difficulty": "hard", "question": "A shopkeeper had 100 kg of sugar. He sold some at ₹45 per kg and the rest at ₹50 per kg. If his total revenue was ₹4750, how many kg did he sell at ₹45 per kg?", "options": {"A": "40 kg", "B": "45 kg", "C": "50 kg", "D": "55 kg"}, "correct_answer": "C"},
    {"id": 89, "difficulty": "hard", "question": "The ratio of the weights of two objects is 5:7. If the heavier object weighs 35 kg, what is the weight of the lighter object?", "options": {"A": "20 kg", "B": "22 kg", "C": "24 kg", "D": "25 kg"}, "correct_answer": "D"},
    {"id": 90, "difficulty": "hard", "question": "A container weighs 12.5 kg when empty. When filled with water, it weighs 62.5 kg. What is the capacity of the container in liters? (1 liter water = 1 kg)", "options": {"A": "48 liters", "B": "49 liters", "C": "50 liters", "D": "51 liters"}, "correct_answer": "C"},
    {"id": 91, "difficulty": "hard", "question": "The total weight of 3 boxes is 45 kg. The first box is twice as heavy as the second, and the third is 5 kg heavier than the second. What is the weight of the first box?", "options": {"A": "18 kg", "B": "19 kg", "C": "20 kg", "D": "21 kg"}, "correct_answer": "C"},
   {
  "id": 92,
  "difficulty": "hard",
  "question": "A fruit seller bought 50 kg of mangoes at ₹40 per kg. He sold 30 kg at ₹50 per kg and the rest at ₹35 per kg. What was his overall profit or loss?",
  "options": {
    "A": "₹150 profit",
    "B": "₹150 loss",
    "C": "₹200 profit",
    "D": "₹200 loss"
  },
  "correct_answer": "C"
}
, {"id": 93, "difficulty": "hard", "question": "The weight of a metal is 60% of the weight of another metal. If the heavier metal weighs 250 kg, what is the total weight of both metals?", "options": {"A": "390 kg", "B": "400 kg", "C": "410 kg", "D": "420 kg"}, "correct_answer": "B"},
    {"id": 94, "difficulty": "hard", "question": "A bag contains 20 kg of rice. If 15% of the rice is used, how much rice is left?", "options": {"A": "16 kg", "B": "16.5 kg", "C": "17 kg", "D": "17.5 kg"}, "correct_answer": "C"},
    {"id": 95, "difficulty": "hard", "question": "The average weight of 6 people is 65 kg. When one person leaves, the average becomes 63 kg. What was the weight of the person who left?", "options": {"A": "70 kg", "B": "72 kg", "C": "75 kg", "D": "78 kg"}, "correct_answer": "C"},
 {
  "id": 96,
  "difficulty": "hard",
  "question": "A box of 50 tools weighs 40 kg. If 10 tools are removed, the weight becomes 32 kg. What is the weight of the empty box?",
  "options": {
    "A": "0 kg",
    "B": "2 kg",
    "C": "4 kg",
    "D": "6 kg"
  },
  "correct_answer": "A"
}
,   {"id": 97, "difficulty": "hard", "question": "A person's weight increases by 20% to 84 kg. What was his original weight?", "options": {"A": "68 kg", "B": "69 kg", "C": "70 kg", "D": "71 kg"}, "correct_answer": "C"},
    {"id": 98, "difficulty": "hard", "question": "The weight of 1 cubic meter of a metal is 9000 kg. What is the weight of 1 cubic cm of the metal in grams?", "options": {"A": "7 g", "B": "8 g", "C": "9 g", "D": "10 g"}, "correct_answer": "C"},
    {"id": 99, "difficulty": "hard", "question": "A mixture of 30 kg contains rice and wheat in the ratio 2:3. How much rice should be added to make the ratio 1:1?", "options": {"A": "4 kg", "B": "5 kg", "C": "6 kg", "D": "7 kg"}, "correct_answer": "C"},
    {"id": 100, "difficulty": "hard", "question": "The total weight of 8 identical boxes is 72 kg. What is the weight of 15 such boxes?", "options": {"A": "130 kg", "B": "132 kg", "C": "134 kg", "D": "135 kg"}, "correct_answer": "D"}
  ]
}