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Current Question (ID: 14875)

Question:

The characteristics and an example of a synovial joint in humans is

Options:

1. Fluid cartilage between two bones, limited movements - Knee joints
2. Fluid filled between two joints, provides cushion - Skull bones
3. Fluid filled synovial cavity between two bones - Joint between atlas and axis
4. Lymph filled between two bones, limited movement - Gliding joint between carpals

Solution:

Joint between atlas and axis is pivot joint, which is an example of synovial joint characterised by the presence of a fluid-filled synovial cavity between the articulating surface of the two bones. Knee joint (hinge joint) is a synovial joint characterised by the presence of fluid filled synovial cavity between the articulating surfaces of the two bones. Fluid cartilage between two bones having limited movements is slightly movable joint. In freely movable joints fluid filled between two joints provides cushion In gliding joint, the articulating bones can slide upon one another.

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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
}