Waec Chemistry 1992 Past Questions and Answers

Question 31:

• WAEC 1992

Which of the following statements is not correct? The 4s orbital

A. Is defined by the quantum number 1 = O
B. Is of higher energy than the 3d orbital
C. Contains a maximum of two electrons
D. Is spherical about the nucleus
E. Is filled before the 4p orbital

Question 32:

• WAEC 1992

Which of the following pH values is likely to be that of a slightly alkaline solution?

A. 2
B. 5
C. 7
D. 8
E. 13

Question 33:

• WAEC 1992

Which of the following minerals contains flurine as one of its constituent elements?

A. Cryolite
B. Bauxite
C. Potash alum
D. Kaolin
E. Mica

Question 34:

• WAEC 1992

The product of the reaction between propanoic acid and ethanol is

A. Prophlmethanoate
B. Ethylethanoate
C. Methylpropanoate
D. Propylethanoate
E. Ethylpropanoate

Question 35:

• WAEC 1992

Which of the following groups contains entirely linear molecules?

A. H ₂NH₃O ₂
B. CO₂NH ₃₂
C. H ₂CH₄N₂
D. CO₂H₂N₂
E. CH ₄O ₂CO ₂