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Current Question (ID: 20913)

Question:

$\text{Which of the following oxide is basic in nature?}$

Options:

1. $\text{SiO}_2$
2. $\text{CaO}$
3. $\text{Al}_2\text{O}_3$
4. $\text{SO}_2$

Solution:

$\text{Hint: Basic oxides are typically metal oxides; check metals.}$ $\text{Explanation:}$ $\text{(i) Acidic oxides are compounds that have the properties of an acid and are formed when oxygen reacts with non-metals.}$ $\text{Examples of acidic oxides include } \text{SO}_2, \text{SiO}_2, \text{CO}_2, \text{P}_2\text{O}_5 \text{ etc.}$ $\text{(ii) A basic oxide can either react with water to form a base or with an acid to form a salt and water in a neutralization reaction. It generally forms when a metal reacts with oxygen.}$ $\text{CaO is a basic oxide. When calcium oxide reacts with water, it produces calcium hydroxide, a strong base.}$ $\text{(iii) Al}_2\text{O}_3 \text{ is amphoteric because it reacts with both acids and bases to form salts and water.}$ $\text{Hence, the correct answer is option 2.}$

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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
}