Import Question JSON

Current Question (ID: 18481)

Question:

$\text{Which are the most abundant elements present inside the earth's crust?}$

Options:

1. $\text{Al, and Fe}$
2. $\text{Al, and Cu}$
3. $\text{Fe, and Cu}$
4. $\text{Cu, and Ag}$

Solution:

$\text{Al and Fe are most abundant among these.}$ $\text{Among a number of elements which are available in earth crust, the most abundant elements are aluminium and iron.}$ $\text{Aluminium is third most abundant element in earth crust. i.e., 8.3\% by weight while iron present in earth crust with 4.2\% by weight.}$ $\text{Copper and silver are also found in earth crust but their abundance percentage is low.}$

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
}