Import Question JSON

Current Question (ID: 13611)

Question:

Identify the chordates in which the notochord persists in the adult?

Options:

1. Tunicates
2. Lancelets
3. Cyclostomata
4. Bony fishes

Solution:

Lancelets, also known as amphioxus, are small marine chordates in the subphylum Cephalochordata. They are the only chordates in which the notochord persists in the adult stage. In other chordates, including tunicates (subphylum Urochordata), cyclostomes (jawless fishes, including lampreys and hagfishes), and bony fishes (class Osteichthyes), the notochord is present only during the embryonic stage or is replaced by a vertebral column or backbone in the adult stage.

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
}