Import Question JSON

Current Question (ID: 17907)

Question:

$\text{Incorrect statement among the following about amorphous solids is -}$

Options:

1. $\text{On heating they may become crystalline at a certain temperature.}$
2. $\text{They may become crystalline on keeping for a long time.}$
3. $\text{Amorphous solids can be moulded by heating.}$
4. $\text{They are anisotropic in nature.}$

Solution:

$\text{HINT: Amorphous solids are isotropic in nature.}$ $\text{Explanation:}$ $\text{Amorphous solid, any noncrystalline solid in which the atoms and molecules are not organized in a definite lattice pattern. Such solids include glass, plastic, and gel.}$ $\text{Amorphous solids are isotropic in nature because it has no long-range order and any physical property will be same on all direction.}$ $\text{On the other hand, anisotropic nature is a characteristic feature of crystalline solid.}$ $\text{They may become crystalline at some temperature. Some glass objects from ancient civilizations are found to become milky in appearance because of some crystallization.}$

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
}