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Current Question (ID: 13565)

Question:

Which of the following is not an arthropod characteristic?

Options:

1. Jointed appendages
2. Non-segmented bodies
3. Periodic moulting
4. Articulated exoskeleton

Solution:

Arthropods are a large phylum of invertebrate animals that include insects, crustaceans, arachnids, and others. They are characterized by several common features, including jointed appendages, periodic moulting (ecdysis), and an articulated exoskeleton made of chitin. These characteristics are considered fundamental to the phylum Arthropoda. Option (2) Non-segmented bodies is not a characteristic of arthropods, as arthropods are characterized by having segmented bodies with distinct regions and appendages attached to each segment. This segmentation allows for greater flexibility and movement in arthropods.

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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
}