JAMB Chemistry questions: Kinetic theory of matter and gas laws

27 questions with answers and explanations. Tap an option to check yourself.

1. Question 21· Kinetic theory of matter and gas laws· JAMB

   Under the same conditions, hydrogen (H₂ = 2) diffuses how many times as fast as oxygen (O₂ = 32)?

   • A16
   • B4
   • C2
   • D8

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2. Question 22· Kinetic theory of matter and gas laws· JAMB

   What volume does 2 g of hydrogen gas occupy at s.t.p.? (H = 1; molar volume = 22.4 dm³)

   • A22.4 dm³
   • B11.2 dm³
   • C44.8 dm³
   • D2 dm³

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3. Question 23· Kinetic theory of matter and gas laws· JAMB

   A gas has a vapour density of 32. Find its relative molecular mass.

   • A64
   • B32
   • C16
   • D128

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4. Question 24· Kinetic theory of matter and gas laws· JAMB

   According to Graham's law, the ratio of the rate of diffusion of hydrogen to that of oxygen is [H = 1, O = 16]

   • A4 : 1
   • B1 : 4
   • C16 : 1
   • D1 : 16

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5. Question 25· Kinetic theory of matter and gas laws· JAMB

   A gas occupies 100 cm³ at 2 atm and 300 K. Find its volume at 1 atm and 450 K.

   • A33.3 cm³
   • B75 cm³
   • C150 cm³
   • D300 cm³

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6. Question 26· Kinetic theory of matter and gas laws· JAMB

   A gas occupies 300 cm³ at 27 °C. Find its volume at 87 °C if the pressure stays constant.

   • A600 cm³
   • B966 cm³
   • C250 cm³
   • D360 cm³

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7. Question 27· Kinetic theory of matter and gas laws· JAMB

   A gas X diffuses at half the rate of methane (CH₄ = 16) under the same conditions. Find the relative molecular mass of X.

   • A8
   • B32
   • C64
   • D4

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   Explanation and discussion