حقیقی گیسیں _____ پر مثالی رویے سے انحراف ظاہر کرتی ہیں؟
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A. Low temperature and high pressure
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B. Low temperature and low pressure
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C. High temperature and high pressure
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D. High temperature and low pressure
Explanation
Real gases show deviation from ideal behavior at low temperature and high pressure.
Due to increased intermolecular forces and reduced volume available for gas molecules, which contradicts the assumptions of ideal gas behavior.
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A. 22.4L
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B. 0.224L
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C. 224L
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D. None of these
Explanation
- At STP (Standard Temperature and Pressure), 1 mole of any gas occupies 22.4L.
- For 10 moles of O₂, the volume is:
10 × 22.4L = 224L.
وین ڈیر والز کی تعمیل کرنے والی ایک حقیقی گیس مثالی گیس سے ملتی جلتی ہوگی اگر ______؟
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A. Both A and B small
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B. None of these
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C. A small and B larger
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D. Both A and B larger
Explanation
In Van der Waals equation, ‘a’ accounts for intermolecular forces and ‘b’ for volume of gas molecules.A small ‘a’ (weak attraction) and large ‘b’ (small molecular size) make a real gas behave more like an ideal gas.
مثالی طرز عمل سے گیس کا انحراف زیادہ سے زیادہ _____ ہے؟
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A. None of these
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B. -10°C and 5 atm
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C. -100°C and 5 atm
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D. -10°C and 2 atm
Explanation
Deviation from ideal gas behavior is maximum at low temperatures and high pressures due to intermolecular forces and finite volume of gas molecules.-10°C (low temp) and 5 atm (high pressure) causes maximum deviation from ideal gas behavior.
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A. 22.4dm³
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B. None of these
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C. 2.24dm³
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D. 224.14dm³
Explanation
Molar mass of CH₄ = 12 (C) + 4×1 (H) = 16 g/mol, so 16 g = 1 mole of CH₄.
At standard temperature and pressure (STP), 1 mole of any gas occupies 22.4 dm³, so CH₄ also occupies 22.4 dm³.
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A. Newton's gravitational law
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B. Ideal gas law
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C. Boyle's law
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D. Charles law
Explanation
PV = nRT is the mathematical form of the ideal gas law.
It relates the pressure, volume, and temperature of an ideal gas with the amount of gas in moles and the universal gas constant.
مندرجہ ذیل میں سے کون سا زیادہ مثالی رویہ ظاہر کرتا ہے؟
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A. Oxygen (O₂)
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B. None of these
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C. Helium (He)
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D. Nitrogen (N₂)
Explanation
- Helium is a noble gas with weak intermolecular forces, leading to ideal gas behavior.
- As a monoatomic gas, it has minimal interactions between particles compared to diatomic gases like oxygen and nitrogen.
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