Import Question JSON

Current Question (ID: 9162)

Question:

$\text{An amphoteric hydroxide among the following is :}$

Options:

1. $\text{Be}(\text{OH})_2$
2. $\text{Sr}(\text{OH})_2$
3. $\text{Ca}(\text{OH})_2$
4. $\text{Mg}(\text{OH})_2$

Solution:

$\text{Hint: Amphoteric oxide reacts with both acids and bases.}$ $\text{Explanation:}$ $\text{The metal hydroxides with highly charged central metal atoms are amphoteric oxide or amphoteric hydroxides.}$ $\text{Down the group the basicity of group II increases down the group. So, }\text{Be}(\text{OH})_2\text{ is amphoteric oxide.}$ $\text{Be}(\text{OH})_2 + 2\text{HCl} \rightarrow \text{BeCl}_2 + 2\text{H}_2\text{O}$ $\text{Be}(\text{OH})_2 + 2\text{NaOH} \rightarrow \text{Na}_2\text{BeO}_2 + 2\text{H}_2\text{O}$

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
}