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Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 1346:

How many moles of oxygen would contain 1.204 x 10²⁴ molecules?
[Avogadro's constant (NA) = 6.02 x 10²³]

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A 1
B 2
C 3
D 4

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Question 1347:

Which of the following statements about solids is correct?

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A Solid particles are less orderly than those of a liquid
B Solid have lower densities than liquids
C Solid particles have greater kinetic energies than those of liquids
D Solid particles cannot be easily compressed

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Question 1348:

Which of the following apparatus can be used to measure a specific volume of a liquid accurately?

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A Beaker
B Conical flask
C Measuring cyclinder
D Pipette

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Question 1349:

The general gas equation \(\frac{PV}{T}\) = K is a combination of

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A Boyle's and Charles' laws
B Boyle's and Graham's laws
C Charles' and Graham's laws
D Dalton's and Graham's laws

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Question 1350:

The spreading of the scent of a flower in a garden is an example of_____?

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A Brownian motion
B Diffusion
C Osmosis
D Tynadal effect

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