Import Question JSON

Current Question (ID: 14709)

Question:

In order to produce concentrated urine, large amounts of water can be reabsorbed from:

Options:

1. Ascending limb of loop of Henle
2. Descending limb of loop of Henle
3. Distal convoluted tubule
4. Collecting duct

Solution:

The collecting duct is the site where the final concentration of urine occurs. The loop of Henle and the distal convoluted tubule play important roles in the reabsorption of solutes from the filtrate, but the collecting duct is primarily responsible for regulating the amount of water that is reabsorbed back into the bloodstream. When the body needs to conserve water, the hormone ADH (antidiuretic hormone) is released, which makes the walls of the collecting duct more permeable to water. As a result, water moves out of the tubule and into the surrounding tissues, where it is then reabsorbed into the bloodstream. This process leads to the production of a small volume of highly concentrated urine. In the absence of ADH, the walls of the collecting duct are less permeable to water, and a large volume of dilute urine is produced.

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
}