Import Question JSON

Current Question (ID: 9202)

Question:

$\text{The effect of addition of gypsum to cement is-}$

Options:

1. $\text{It reduces the setting time of cement.}$
2. $\text{The setting time of cement increases.}$
3. $\text{The colour of cement becomes light.}$
4. $\text{A shining surface is obtained.}$

Solution:

$\text{HINT: Gypsum slows down the setting of cement so that cement is adequately hardened.}$ $\text{Explanation:}$ $\text{Gypsum material is added for controlling the setting time of cement.}$ $\text{Gypsum plays a very important role in controlling the rate of hardening of the cement.}$ $\text{During the manufacturing of the cement process, upon the cooling of clinker, a small quantity of gypsum is introduced at that time of the final grinding process.}$ $\text{The retardation mechanism of gypsum is:}$ $\text{When cement is hydrated, gypsum reacts with H}_2\text{O quickly to generate calcium sulfoaluminate hydrate and delay the setting time of cement.}$

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
}