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Current Question (ID: 12823)

Question:

In the living plant body, the PGRs can be broadly divided into two groups. This classification is actually based on

Options:

1. Function
2. Structure
3. Metabolism
4. Kinetin

Solution:

PGRs (Plant Growth Regulators) are classified into two broad groups based on their physiological function in the plant body: Plant Growth Promoters (PGPs) and Plant Growth Inhibitors (PGIs). The PGPs include auxins, gibberellins, cytokinins, brassinosteroids, and some other minor PGRs. These hormones promote plant growth and development by stimulating cell division, cell elongation, and differentiation. The PGIs include abscisic acid, ethylene, and some other minor PGRs. These hormones inhibit plant growth and development by inhibiting cell division, cell elongation, and other developmental processes.

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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
}