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Current Question (ID: 15527)

Question:

Which of the following statement is incorrect about menstrual cycle? 1. LH Surge causes ovulation at the mid of the menstrual cycle 2. Corpus luteum is formed by graafian follicle on the next day of ovulation under the influence of progesterone 3. Abrupt fall in progesterone is the instant cause of menstruation 4. Corpus luteum remains active about 10-12 days in a normal menstruating female

Options:

1. LH Surge causes ovulation at the mid of the menstrual cycle
2. Corpus luteum is formed by graafian follicle on the next day of ovulation under the influence of progesterone
3. Abrupt fall in progesterone is the instant cause of menstruation
4. Corpus luteum remains active about 10-12 days in a normal menstruating female

Solution:

Page 47, XI NCERT

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Expected JSON Format:

{
  "question": "The mass of carbon present in 0.5 mole of $\\mathrm{K}_4[\\mathrm{Fe(CN)}_6]$ is:",
  "options": [
    {
      "id": 1,
      "text": "1.8 g"
    },
    {
      "id": 2,
      "text": "18 g"
    },
    {
      "id": 3,
      "text": "3.6 g"
    },
    {
      "id": 4,
      "text": "36 g"
    }
  ],
  "solution": "\\begin{align}\n&\\text{Hint: Mole concept}\\\\\n&1 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\text{ moles of carbon atom}\\\\\n&0.5 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\times 0.5 \\text{ mol} = 3 \\text{ mol}\\\\\n&1 \\text{ mol of carbon} = 12 \\text{ g}\\\\\n&3 \\text{ mol carbon} = 12 \\times 3 = 36 \\text{ g}\\\\\n&\\text{Hence, 36 g mass of carbon present in 0.5 mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6].\n\\end{align}",
  "correct_answer": 4
}