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Current Question (ID: 10670)

Question:

$\text{The oxide of a non-metal possesses the following characteristics:}$ $\text{i. It is both a proton donor and a proton acceptor.}$ $\text{ii. It is a poor conductor of electricity.}$ $\text{iii. It reacts readily with basic and acidic oxides.}$ $\text{iv. It oxidises Fe at boiling point.}$ $\text{The formula for oxide is:}$

Options:

1. $\text{H}_2\text{O}$ (Correct)
2. $\text{CO}_2$
3. $\text{H}_2\text{O}_2$
4. $\text{NO}$

Solution:

$\text{HINT: H}_2\text{O is neutral in nature.}$ $\text{Explanation:}$ $\text{H}_2\text{O is a proton donor and proton acceptor. Pure water is a poor conductor of electricity. Water readily reacts with basic and acidic oxides. Water also oxidises Fe at boiling point.}$ $\text{Carbon dioxide is covalent molecular bonding, it has neither delocalised electrons or ions and this lack of charged particles free to move means it does not conduct.}$ $\text{NO is neutral oxide. NO does not react readily with basic and acidic oxides.}$ $\text{H}_2\text{O}_2 \text{ did not oxidise Fe at boiling point.}$

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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
}