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Current Question (ID: 21213)

Question:

$\text{Given below are two statements:}$ $\text{Statement - I}$ $\text{Blood acts as a buffer solution, and its pH is maintained as an acidic buffer.}$ $\text{Statement - II}$ $\text{The pH of blood is regulated by the presence of bicarbonate (HCO}_3^-\text{) and carbonic acid (H}_2\text{CO}_3\text{).}$

Options:

1. $\text{Statement I is false but Statement II is true.}$
2. $\text{Both Statement I and Statement II are false.}$
3. $\text{Both Statement I and Statement II are true.}$
4. $\text{Statement I is true but Statement II is false.}$

Solution:

$\text{Hint: H}_2\text{CO}_3/\text{HCO}_3^-\text{ buffer system helps to maintain the pH of blood.}$ $\text{H}_2\text{CO}_3/\text{HCO}_3^-\text{ buffer system helps to maintain the pH of blood between 7.26 to 7.42. (Refer NCERT p-block group-14)}$ $\text{The buffer system is acidic in type.}$ $\text{The pH it maintains is basic (7.4)}$

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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
}