Import Question JSON

Current Question (ID: 14336)

Question:

Which of the following events happen when air expelled from lungs

Options:

1. Ribs and sternum returned to original position
2. volume of thorax decreased
3. Diaphragm relaxed and arched upwards
4. All of the above

Solution:

When air is expelled from the lungs during expiration, several events happen: Ribs and sternum returned to original position: During inspiration, the ribcage and sternum move upwards and outwards, expanding the thoracic cavity. During expiration, they return to their original position. Volume of thorax decreased: During expiration, the volume of the thorax decreases as the ribcage and sternum move downwards and inwards and the diaphragm moves up. Diaphragm relaxed and arched upwards: During expiration, the diaphragm relaxes and moves up, becoming more arched. This reduces the volume of the thoracic cavity and helps to expel air from the lungs.

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
}