Import Question JSON

Current Question (ID: 14457)

Question:

Human Heart has SA node which makes it–

Options:

1. myogenic heart
2. neurogenic heart
3. Digenic Heart
4. Rhinogenic Heart

Solution:

The human heart has the ability to generate its own electrical impulses and contract rhythmically without being stimulated by external nerves. This property is called myogenicity, and it is due to the presence of specialized cardiac muscle cells called pacemaker cells. The pacemaker cells are located in the sinoatrial (SA) node, which is a small mass of tissue located in the right atrium. The SA node generates electrical impulses that spread throughout the atria and cause them to contract. The impulses also travel to the atrioventricular (AV) node, where they are delayed briefly before passing into the ventricles and causing them to contract. In contrast, a neurogenic heart relies on external nerves to stimulate contraction.

Import JSON File

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
}