Import Question JSON

Current Question (ID: 12633)

Question:

Select the wrong statement.

Options:

1. Bacterial cell wall is made up of peptidoglycan
2. Pili and fimbriae are mainly involved in motility of bacterial cells
3. Cyanobacteria lack flagellated cells
4. Mycoplasma is a wall-less microorganism

Solution:

Fimbriae or pili are fine hair like appendages used by bacteria for attachment rather than motility. These are formed of protein called pilin. Pili are longer than fimbriae and are one or two per cells. Some special type of pili called sex pili are present in certain strains of bacteria which help the bacterium for forming conjugation canal during sexual reproduction by conjugation method. Fimbriae also help bacterium for cell to cell adhering and colonisation. PAGE 128-129, XI NCERT

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
}