Import Question JSON

Current Question (ID: 14509)

Question:

During a cardiac cycle: 1. About 70 ml of blood is pumped by the two ventricles 2. The left atrium and the left ventricle contract simultaneously 3. More blood is pumped into the systemic than in pulmonary circulation 4. The atria contract prior to the ventricles

Options:

1. About 70 ml of blood is pumped by the two ventricles
2. The left atrium and the left ventricle contract simultaneously
3. More blood is pumped into the systemic than in pulmonary circulation
4. The atria contract prior to the ventricles

Solution:

The atria contract prior to the ventricles. Statement 1 is incorrect. The stroke volume (amount of blood pumped by each ventricle in one contraction) of a healthy human heart is around 70 ml, but the total amount of blood pumped by the two ventricles in one complete cardiac cycle (including both systole and diastole) is about 5 liters. Statement 2 is incorrect. The left atrium and left ventricle do not contract simultaneously. The contraction of the atria is followed by the contraction of the ventricles. Statement 3 is incorrect. The same amount of blood is pumped to the systemic and pulmonary circulation during a cardiac cycle.

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
}