Waec Chemistry Past Questions For Year 2010
Question 11
Which of the following molecules has a triple bond in its structure?
- A. CH4
- B. NH3
- C. N2
- D. O 2
Question 12
Which of the following molecules has a linear shape?
- A. CH4
- B. CO 2
- C. H2S
- D. NH 3
Question 13
The determination of heat of combustion is carried out with
- A. a thermometer
- B. a bomb calorimeter
- C. an evaporating dish
- D. a boiling tube
Question 14
Which of the following gases contains the highest number of atoms at s.t.p?
- A. 6 moles of neon
- B. 3 moles of oxygen
- C. 2 moles of chlorine
- D. 1 mole of ethane
Question 15
A given volume of oxygen diffused through a porous partition in 8 seconds. How long would it take the same volume of carbon (IV) oxide to diffuse under the same condition? [C = 12.0, O = 16.0]
- A. 5.8 seconds
- B. 6.8 seconds
- C. 9.4 seconds
- D. 11.0 seconds
