The Gaseous state — Important Questions
Telangana Open School (TOSS) · Class 12 · Chemistry
52 important questions from The Gaseous state for Telangana Open School (TOSS) Class 12 Chemistry, with answers. Written for the board exams 2027.
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Important Questions from The Gaseous state
What is the value of absolute zero in Celsius?
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-273°C
Absolute zero is 0 K, which equals -273°C. At this temperature, the volume of an ideal gas becomes zero.
Which scale of temperature is used in gas laws?
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Kelvin
Gas laws use absolute temperature, which is measured in Kelvin (K).
What is the molar volume of an ideal gas at STP?
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22.4 L
At STP (273 K and 1 atm), one mole of any ideal gas occupies 22.4 liters.
Which gas law relates volume and number of moles at constant temperature and pressure?
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Avogadro's law
Avogadro's law states that V ∝ n at constant T and P, meaning equal volumes of gases contain equal number of molecules.
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