Import Question JSON

Current Question (ID: 16386)

Question:

$\text{When } 10^{19} \text{ electrons are removed from a neutral metal plate, the electric charge on it is?}$

Options:

1. $-1.6 \text{ C}$
2. $+1.6 \text{ C}$
3. $10^{19} \text{ C}$
4. $10^{-19} \text{ C}$

Solution:

$\text{Hint: Recall the properties of charge, one of them states that charge is quantized.}$ $\text{Step 1: Find charge by using the quantization of charge method.}$ $\text{Use the relation to solve the question.}$ $\text{By using } Q = ne$ $\Rightarrow Q = 10^{19} \times 1.6 \times 10^{-19}$ $= +1.6 \text{ C}$

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
}