Import Question JSON

Current Question (ID: 8060)

Question:

$\text{Mg}_2\text{C}_3$ reacts with water forming propyne $\text{C}_3^{4-}$. The number of sigma and pie bonds in $\text{C}_3^{4-}$ is-

Options:

1. $\text{Two sigma and two pi bonds.}$ (Correct)
2. $\text{Three sigma and one pi bonds.}$
3. $\text{Two sigma and one pi bonds.}$
4. $\text{Two sigma and three pi bonds.}$

Solution:

$\text{HINT: C}_3^{4-} \text{ contains triple bond.}$ $\text{Explanation:}$ $\text{Mg}_2\text{C}_3 \Rightarrow 2\text{Mg}^{2+} + \text{C}_3^{4-}$ $\text{C}_3^{4-}$ has $\text{:}\text{C} \text{ } \text{—} \text{ C } \text{ } \text{≡} \text{ } \text{C}^{ \ominus}$ structure. $\text{In this structure, it contains two sigma and two pi bonds.}$

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
}