Import Question JSON

Current Question (ID: 11907)

Question:

Select the correct statement:

Options:

1. Cholera, typhoid, tetanus are well-known diseases caused by viruses.
2. Dinoflagellates, euglenoids and slime moulds are placed under kingdom Monera
3. Members of kingdom Protista are primarily aquatic
4. Dinoflagellates are the chief 'producers' in the oceans

Solution:

Cholera, typhoid, and tetanus are not caused by viruses. Cholera is caused by the bacterium Vibrio cholerae, typhoid is caused by the bacterium Salmonella typhi, and tetanus is caused by the bacterium Clostridium tetani. Therefore, statement 1 is incorrect. Dinoflagellates, euglenoids, and slime moulds are not placed under kingdom Monera. Dinoflagellates and euglenoids are protists, which belong to kingdom Protista, while slime moulds are fungi-like protists and are classified in the kingdom Protista as well. Therefore, statement 2 is incorrect. Members of kingdom Protista are primarily aquatic. Protists are a diverse group of eukaryotic microorganisms that can be found in various aquatic habitats such as freshwater, marine environments, and moist soils. Therefore, statement 3 is correct. Dinoflagellates are not the chief 'producers' in the oceans. Dinoflagellates are a type of protist that can be photosynthetic and play a role in marine ecosystems as primary producers, but they are not the chief producers. In marine environments, other organisms such as diatoms and cyanobacteria are also important primary producers. Therefore, statement 4 is incorrect.

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
}