Import Question JSON

Current Question (ID: 14808)

Question:

Arrange the following events involved in muscular contraction (i) Action potential enters muscle fibre through T-tubules (ii) Ca²⁺ binds with troponin-C (iii) Actomyosin cross bridge formation (iv) Sliding of thin myofilament along the thick myofilament (v) Exposure of active sites on actin filaments (vi) Release of Ca²⁺ from sarcoplasmic reticulum

Options:

1. (i) → (ii) → (iii) → (iv) → (v) → (vi)
2. (vi)→(v)→(iv)→(iii)→(ii)→(i)
3. (i) → (ii) → (vi) → (v) → (iii) → (iv)
4. (i) → (vi) → (ii) → (v) → (iii) → (iv)

Solution:

The correct sequence of events involved in muscular contraction is: (i) Action potential enters muscle fibre through T-tubules (vi) Release of Ca²⁺ from sarcoplasmic reticulum (ii) Ca²⁺ binds with troponin-C (v) Exposure of active sites on actin filaments (iii) Actomyosin cross bridge formation (iv) Sliding of thin myofilament along the thick myofilament

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
}