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Current Question (ID: 14287)

Question:
Which of the following is not supported by cartilaginous rings
Options:
  • 1. Primary bronchioles
  • 2. tertiary bronchioles
  • 3. tracheae
  • 4. alveoli
Solution:
Alveoli are tiny air sacs in the lungs where the exchange of gases takes place. They are surrounded by a network of capillaries and do not have cartilaginous rings for support. The bronchial tree, on the other hand, is supported by cartilaginous rings which help to maintain their patency and prevent their collapse. The primary bronchioles, secondary bronchioles, and tertiary bronchioles are part of the bronchial tree and are supported by cartilaginous rings. The trachea, also known as the windpipe, is also part of the bronchial tree and is supported by C-shaped cartilaginous rings.

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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
}