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Current Question (ID: 12119)

Question:

Ovules present on loose megasporophylls, unbranched stem and dicotyledonous condition are features related to

Options:

1. Cycas
2. Pinus
3. Cedrus
4. Ephedra

Solution:

Cycas is a genus of gymnosperms, commonly known as cycads. Cycads have several distinctive features, including ovules that are present on loose megasporophylls (also known as ovuliferous scales), unbranched stems, and dicotyledonous (two cotyledons) condition of their seeds. These features are characteristic of Cycas and differentiate it from other plants such as Pinus (a genus of conifers), Cedrus (a genus of conifers), and Ephedra (a genus of gymnosperms).

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Upload a JSON file containing LaTeX/MathJax formatted question, options, and solution.

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
}