The chemical formula of glucose is mathrm{C}_{6}…

Question

The chemical formula of glucose is $\mathrm{C}_{6}\mathrm{H}_{12}\mathrm{O}_{6}$. The weight % of carbon in glucose is:

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Question & Answer (English)

The chemical formula of glucose is $\mathrm{C}_{6}\mathrm{H}_{12}\mathrm{O}_{6}$. The weight % of carbon in glucose is:

  1. 53
  2. 25
  3. 72
  4. 40 — Correct Answer
Explanation:

To find the weight percentage of Carbon in Glucose, follow these steps:

  1. Identify Atomic Weights:
    • Carbon ($C$) = 12
    • Hydrogen ($H$) = 1
    • Oxygen ($O$) = 16
  2. Calculate Molar Mass of Glucose ($\mathrm{C}_{6}\mathrm{H}_{12}\mathrm{O}_{6}$):$$= (6 \times 12) + (12 \times 1) + (6 \times 16)$$ $$= 72 + 12 + 96$$ $$= 180 \text{ g/mol}$$
  3. Calculate Mass of Carbon in one mole:$$= 6 \times 12 = 72 \text{ g}$$
  4. Calculate Percentage:$$\text{Weight }\% = \frac{\text{Mass of Carbon}}{\text{Total Molar Mass}} \times 100$$ $$\text{Weight }\% = \frac{72}{180} \times 100$$ $$\text{Weight }\% = 0.4 \times 100 = 40\%$$

Thus, the weight % of carbon is 40.

प्रश्न एवं उत्तर (हिंदी)

ग्लूकोज का रासायनिक सूत्र $\mathrm{C}_{6}\mathrm{H}_{12}\mathrm{O}_{6}$ है। ग्लूकोज में कार्बन का भार % (weight %) कितना है:

  1. 53
  2. 25
  3. 72
  4. 40 — सही उत्तर
स्पष्टीकरण:

ग्लूकोज में कार्बन का भार प्रतिशत (weight percentage) ज्ञात करने के लिए, इन चरणों का पालन करें:

  1. परमाणु भार (Atomic Weights) जानें:
    • कार्बन ($C$) = 12
    • हाइड्रोजन ($H$) = 1
    • ऑक्सीजन ($O$) = 16
  2. ग्लूकोज ($\mathrm{C}_{6}\mathrm{H}_{12}\mathrm{O}_{6}$) का आणविक द्रव्यमान (Molar Mass) निकालें:$$= (6 \times 12) + (12 \times 1) + (6 \times 16)$$ $$= 72 + 12 + 96$$ $$= 180 \text{ g/mol}$$
  3. एक मोल में कार्बन का द्रव्यमान:$$= 6 \times 12 = 72 \text{ g}$$
  4. प्रतिशत गणना:$$\text{भार }\% = \frac{\text{कार्बन का द्रव्यमान}}{\text{कुल आणविक द्रव्यमान}} \times 100$$ $$\text{भार }\% = \frac{72}{180} \times 100$$ $$\text{भार }\% = 0.4 \times 100 = 40\%$$

अतः, कार्बन का भार % 40 है।

📚 About this Topic — General Awareness

This multiple choice question is from General Awareness, General Awareness (2024), General Awareness (2024)-6, SSC CGL Tier-1 (PYQs). It has 4 options with a detailed explanation of the correct answer and is available in both English and Hindi (द्विभाषी). Practice more MCQs from General Awareness to strengthen your preparation.

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