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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 41:

A fixed mass of gas has a volume of 92cm₃ at 3 ^oC. When will be its volume at 18 ^oC if the pressure remains constant

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A 15.3cm³
B 87.3cm³
C 552.0cm³
D 97.0cm³

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Question 42:

The processes which return carbon (IV) oxide to the atmosphere include

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A Respiration, decay and combustion
B Photosynthesis, respiration and transpiration
C Ozone depletion, combustion and decay
D Photosynthesis, decay and respiration

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Question 43:

The postulate of Dalton's atomic theory which still holds is that

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A Atoms can neither be created nor destroyed
B The particles of the same element are exactly alike
C Particles of different elements combine in simple whole number ratio
D All elemets are made of small indivisible particles

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Question 44:

¹⁴₆C â†’ X + B
X in the equation above represents

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A ¹²₆C
B ¹²₅B
C ¹⁴₇N
D ¹³₆C

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Question 45:

If 0.75 mole of cyclopropane and 0.66 mole of oxygen are mixed in vessel with a total pressure of 0.7 atmosphere, what is the partial pressure of oxygen in the mixture

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A 0.44 atmosphere
B 0.22 atmosphere
C 0.55 atmosphere
D 0.33 atmosphere

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