{
  "title": "Standard Form of Rational Numbers - Grade 8 CBSE",
  "total_questions": 60,
  "questions": [


    {"id": 1, "difficulty": "easy", "question": "What is the standard form of 6/12?", "options": {"A": "1/2", "B": "2/3", "C": "3/4", "D": "5/6"}, "correct_answer": "A"},
    {"id": 2, "difficulty": "easy", "question": "Reduce 15/45 to its standard form.", "options": {"A": "2/3", "B": "1/3", "C": "3/5", "D": "1/5"}, "correct_answer": "B"},
    {"id": 3, "difficulty": "easy", "question": "What is −8/16 in standard form?", "options": {"A": "−1/4", "B": "−1/3", "C": "−1/2", "D": "−3/4"}, "correct_answer": "C"},
    {"id": 4, "difficulty": "easy", "question": "Simplify 9/27.", "options": {"A": "1/4", "B": "1/3", "C": "2/3", "D": "1/2"}, "correct_answer": "D"},
    {"id": 5, "difficulty": "easy", "question": "Standard form of −12/48 is:", "options": {"A": "−1/2", "B": "−1/3", "C": "−1/4", "D": "−2/3"}, "correct_answer": "A"},
    {"id": 6, "difficulty": "easy", "question": "What is 20/50 in simplest form?", "options": {"A": "2/5", "B": "3/5", "C": "4/5", "D": "1/5"}, "correct_answer": "B"},
    {"id": 7, "difficulty": "easy", "question": "Reduce −14/21.", "options": {"A": "−2/3", "B": "−1/2", "C": "−1/3", "D": "−3/4"}, "correct_answer": "C"},
    {"id": 8, "difficulty": "easy", "question": "Standard form of 18/24 is:", "options": {"A": "4/5", "B": "2/3", "C": "3/4", "D": "5/6"}, "correct_answer": "D"},
    {"id": 9, "difficulty": "easy", "question": "Reduce −25/100.", "options": {"A": "−1/2", "B": "−1/3", "C": "−1/4", "D": "−1/5"}, "correct_answer": "A"},
    {"id": 10, "difficulty": "easy", "question": "Standard form of 30/45 is:", "options": {"A": "3/4", "B": "2/3", "C": "4/5", "D": "1/3"}, "correct_answer": "B"},
    {"id": 11, "difficulty": "easy", "question": "Simplify 28/49.", "options": {"A": "5/7", "B": "6/7", "C": "4/7", "D": "7/9"}, "correct_answer": "C"},
    {"id": 12, "difficulty": "easy", "question": "What is −9/27 in standard form?", "options": {"A": "−1/4", "B": "−1/3", "C": "−2/3", "D": "−1/2"}, "correct_answer": "D"},
    {"id": 13, "difficulty": "easy", "question": "Simplify 16/40.", "options": {"A": "3/5", "B": "2/5", "C": "4/5", "D": "1/4"}, "correct_answer": "A"},
    {"id": 14, "difficulty": "easy", "question": "Standard form of −10/20 is:", "options": {"A": "−3/4", "B": "−2/3", "C": "−1/4", "D": "−1/2"}, "correct_answer": "B"},
    {"id": 15, "difficulty": "easy", "question": "Reduce 5/15.", "options": {"A": "1/4", "B": "1/3", "C": "2/3", "D": "1/5"}, "correct_answer": "C"},
    {"id": 16, "difficulty": "easy", "question": "Simplify 12/36.", "options": {"A": "1/2", "B": "1/4", "C": "1/3", "D": "2/3"}, "correct_answer": "D"},
    {"id": 17, "difficulty": "easy", "question": "Standard form of −21/63 is:", "options": {"A": "−1/2", "B": "−1/3", "C": "−1/4", "D": "−2/3"}, "correct_answer": "A"},
    {"id": 18, "difficulty": "easy", "question": "Reduce 45/60.", "options": {"A": "4/5", "B": "2/3", "C": "3/5", "D": "1/2"}, "correct_answer": "B"},
    {"id": 19, "difficulty": "easy", "question": "Simplify −32/64.", "options": {"A": "−1/4", "B": "−1/2", "C": "−3/4", "D": "−2/5"}, "correct_answer": "C"},
    {"id": 20, "difficulty": "easy", "question": "Standard form of 22/44 is:", "options": {"A": "1/4", "B": "1/2", "C": "3/4", "D": "2/5"}, "correct_answer": "D"},

    {"id": 21, "difficulty": "medium", "question": "Write −18/30 in standard form.", "options": {"A": "−4/5", "B": "−3/5", "C": "−2/5", "D": "−1/5"}, "correct_answer": "B"},
    {"id": 22, "difficulty": "medium", "question": "Simplify 36/48.", "options": {"A": "3/4", "B": "2/3", "C": "4/5", "D": "5/6"}, "correct_answer": "C"},
    {"id": 23, "difficulty": "medium", "question": "Reduce −42/56 to standard form.", "options": {"A": "−3/4", "B": "−2/3", "C": "−1/2", "D": "−3/5"}, "correct_answer": "C"},
    {"id": 24, "difficulty": "medium", "question": "Find standard form of 75/90.", "options": {"A": "5/6", "B": "4/5", "C": "5/7", "D": "3/4"}, "correct_answer": "D"},
    {"id": 25, "difficulty": "medium", "question": "What is standard form of −63/81?", "options": {"A": "−5/7", "B": "−4/7", "C": "−7/9", "D": "−6/9"}, "correct_answer": "A"},
    {"id": 26, "difficulty": "medium", "question": "Reduce 48/72.", "options": {"A": "5/6", "B": "3/4", "C": "2/3", "D": "4/5"}, "correct_answer": "B"},
    {"id": 27, "difficulty": "medium", "question": "Standard form of −50/75 is:", "options": {"A": "−2/3", "B": "−3/5", "C": "−1/3", "D": "−5/6"}, "correct_answer": "C"},
    {"id": 28, "difficulty": "medium", "question": "Simplify 98/112.", "options": {"A": "6/7", "B": "7/8", "C": "5/6", "D": "4/5"}, "correct_answer": "D"},
    {"id": 29, "difficulty": "medium", "question": "Reduce −30/45.", "options": {"A": "−3/4", "B": "−2/3", "C": "−1/3", "D": "−1/2"}, "correct_answer": "A"},
    {"id": 30, "difficulty": "medium", "question": "Standard form of 64/80 is:", "options": {"A": "3/4", "B": "4/5", "C": "5/6", "D": "2/3"}, "correct_answer": "B"},
    {"id": 31, "difficulty": "medium", "question": "Simplify −84/126.", "options": {"A": "−3/4", "B": "−2/3", "C": "−1/3", "D": "−1/4"}, "correct_answer": "C"},
    {"id": 32, "difficulty": "medium", "question": "Reduce 40/56.", "options": {"A": "5/7", "B": "4/7", "C": "6/7", "D": "7/8"}, "correct_answer": "D"},
    {"id": 33, "difficulty": "medium", "question": "Standard form of −16/24 is:", "options": {"A": "−1/2", "B": "−2/3", "C": "−3/4", "D": "−1/3"}, "correct_answer": "A"},
    {"id": 34, "difficulty": "medium", "question": "Simplify 90/120.", "options": {"A": "3/4", "B": "2/3", "C": "5/6", "D": "4/5"}, "correct_answer": "B"},
    {"id": 35, "difficulty": "medium", "question": "Reduce −72/90.", "options": {"A": "−4/5", "B": "−6/9", "C": "−8/10", "D": "−2/5"}, "correct_answer": "C"},
    {"id": 36, "difficulty": "medium", "question": "Standard form of 33/66 is:", "options": {"A": "3/4", "B": "2/5", "C": "1/2", "D": "1/4"}, "correct_answer": "C"},
    {"id": 37, "difficulty": "medium", "question": "Simplify −54/72.", "options": {"A": "−3/4", "B": "−2/3", "C": "−5/6", "D": "−1/2"}, "correct_answer": "B"},
    {"id": 38, "difficulty": "medium", "question": "Reduce 120/160.", "options": {"A": "3/4", "B": "2/3", "C": "5/8", "D": "4/5"}, "correct_answer": "C"},
    {"id": 39, "difficulty": "medium", "question": "Standard form of −27/45 is:", "options": {"A": "−2/3", "B": "−3/5", "C": "−4/5", "D": "−1/3"}, "correct_answer": "B"},
    {"id": 40, "difficulty": "medium", "question": "Simplify 135/180.", "options": {"A": "3/4", "B": "2/3", "C": "5/6", "D": "7/8"}, "correct_answer": "C"},


    {"id": 41, "difficulty": "hard", "question": "Find standard form of −144/216.", "options": {"A": "−2/3", "B": "−3/4", "C": "−4/5", "D": "−5/6"}, "correct_answer": "A"},
    {"id": 42, "difficulty": "hard", "question": "Reduce 180/240 completely.", "options": {"A": "3/4", "B": "4/5", "C": "5/6", "D": "2/3"}, "correct_answer": "B"},
    {"id": 43, "difficulty": "hard", "question": "Simplify −250/400.", "options": {"A": "−1/3", "B": "−2/3", "C": "−5/8", "D": "−3/4"}, "correct_answer": "C"},
    {"id": 44, "difficulty": "hard", "question": "Standard form of 154/231 is:", "options": {"A": "2/3", "B": "3/4", "C": "4/5", "D": "5/7"}, "correct_answer": "D"},
    {"id": 45, "difficulty": "hard", "question": "Reduce −168/252 completely.", "options": {"A": "−2/3", "B": "−3/4", "C": "−4/5", "D": "−1/2"}, "correct_answer": "A"},
    {"id": 46, "difficulty": "hard", "question": "Simplify 192/288.", "options": {"A": "3/4", "B": "2/3", "C": "4/5", "D": "5/6"}, "correct_answer": "B"},
    {"id": 47, "difficulty": "hard", "question": "Standard form of −225/375 is:", "options": {"A": "−3/5", "B": "−2/5", "C": "−4/7", "D": "−1/3"}, "correct_answer": "C"},
    {"id": 48, "difficulty": "hard", "question": "Simplify 350/500.", "options": {"A": "3/4", "B": "2/3", "C": "5/7", "D": "7/10"}, "correct_answer": "D"},
    {"id": 49, "difficulty": "hard", "question": "Reduce −108/162.", "options": {"A": "−2/3", "B": "−3/5", "C": "−4/5", "D": "−1/2"}, "correct_answer": "A"},
    {"id": 50, "difficulty": "hard", "question": "Simplify 240/360.", "options": {"A": "3/4", "B": "2/3", "C": "4/5", "D": "5/6"}, "correct_answer": "B"},
    {"id": 51, "difficulty": "hard", "question": "Find standard form of 416/520.", "options": {"A": "4/5", "B": "3/4", "C": "8/10", "D": "6/7"}, "correct_answer": "C"},
    {"id": 52, "difficulty": "hard", "question": "Simplify −144/192.", "options": {"A": "−4/5", "B": "−3/4", "C": "−2/3", "D": "−1/2"}, "correct_answer": "D"},
    {"id": 53, "difficulty": "hard", "question": "Reduce 128/160.", "options": {"A": "4/5", "B": "3/4", "C": "5/6", "D": "2/3"}, "correct_answer": "A"},
    {"id": 54, "difficulty": "hard", "question": "Standard form of −252/336 is:", "options": {"A": "−3/4", "B": "−2/3", "C": "−5/6", "D": "−4/5"}, "correct_answer": "B"},
    {"id": 55, "difficulty": "hard", "question": "Simplify 500/625.", "options": {"A": "4/5", "B": "3/5", "C": "2/3", "D": "5/6"}, "correct_answer": "C"},
    {"id": 56, "difficulty": "hard", "question": "Reduce 378/504.", "options": {"A": "3/4", "B": "2/3", "C": "4/7", "D": "5/6"}, "correct_answer": "D"},
    {"id": 57, "difficulty": "hard", "question": "Simplify −288/432.", "options": {"A": "−2/3", "B": "−3/4", "C": "−4/5", "D": "−1/2"}, "correct_answer": "A"},
    {"id": 58, "difficulty": "hard", "question": "Standard form of 360/480 is:", "options": {"A": "3/4", "B": "2/3", "C": "5/6", "D": "4/5"}, "correct_answer": "B"},
    {"id": 59, "difficulty": "hard", "question": "Simplify −400/600.", "options": {"A": "−2/3", "B": "−3/5", "C": "−4/6", "D": "−1/2"}, "correct_answer": "C"},
    {"id": 60, "difficulty": "hard", "question": "Reduce 432/576 completely.", "options": {"A": "3/4", "B": "2/3", "C": "4/5", "D": "5/6"}, "correct_answer": "D"}

  ]
}