Waec Chemistry Past Questions
Question 1421
The IUPAC name for CH\(_{3}\)CHCH\(_{3}\)CHCLCHCH\(_{3}\)CH\(_{2}\)CH\(_{3}\) is
- A. 2, 4 - dimethyl - 3 - chlorohexane
- B. 3, 5 - dimethyl - 4 - chlorohexane
- C. 4 - chloro - 3, 5 - dirnethylhexane
- D. 3 - chloro - 2, 4 - dimethylhexane
Question 1422
Graphite is used as a dry lubricant due to the presence of
- A. mobile electrons
- B. free electrons
- C. octahedral structures
- D. layered structures
Question 1423
What is the partial pressure of oxygen at s.t.p. in a gaseous mixture containing 100 cm3 of oxygen and 900 cm3 of nitrogen gas?
- A. 1.0 atm
- B. 0.1 atm
- C. 9.0 atm
- D. 0.9 atm
Question 1424
Which of the following acids would form normal salt only?
- A. Tetraoxosulphate(VI) acid
- B. Trioxonitrate(V) acid
- C. Tetraoxophosphate(V) acid
- D. Trioxosulphate(IV) acid
Question 1425
Consider the following reaction equation:
CaO + SiO\(_{2}\) ------> CaSiO\(_{3}\)
Silicon(IV) oxide is acting as
- A. a basic oxide
- B. a reducing agent
- C. an acidic oxide
- D. an oxidizing agent
