Import Question JSON

Current Question (ID: 14628)

Question:

The concentrations of which plasma electrolyte is not regulated mainly by the kidneys?

Options:

1. hydrogen
2. potassium
3. iron
4. Bicarbonate

Solution:

The kidneys play an important role in regulating the concentrations of various electrolytes in the plasma, including hydrogen (pH regulation), potassium, and bicarbonate. However, iron is not an electrolyte and its concentration in the plasma is not regulated primarily by the kidneys. Iron is an essential trace element that is involved in many biological processes, such as oxygen transport, energy metabolism, and DNA synthesis. The concentration of iron in the plasma is primarily regulated by the balance between dietary intake and iron storage in the body. Therefore, the concentration of plasma electrolyte that is not regulated mainly by the kidneys is iron, which is not an electrolyte.

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
}