Import Question JSON

Current Question (ID: 13626)

Question:

Choose the incorrect match with respect to animal, phylum and two features

Options:

1. Clarias - Chordata - Placoid scales, Operculum
2. Antedon - Echinodermata - Water vascular system, Radial symmetry
3. Locusta - Arthropoda - Jointed appendages, Open circulatory system
4. Nereis - Annelida - Dioecious, Parapodia

Solution:

Clarias is a genus of freshwater catfish that actually belongs to the phylum Actinopterygii (ray-finned fishes) and not Chordata. The correct phylum for Clarias is therefore Actinopterygii, and it does have opercula (protective bony plates covering the gills) but it does not have placoid scales, which are a characteristic feature of cartilaginous fishes such as sharks and rays.

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
}