Search SchoolNGR

Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 226:

Which of the following statement is not correct about esterification?

SchoolNGR Classroom

A It is a slow reaction
B The process is reversible
C It is similar to hydrolysis
D It is catalysed by acids
E The products usually have a fruity smell

View Answer & Explanation

Question 227:

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

SchoolNGR Classroom

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

View Answer & Explanation

Question 228:

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

SchoolNGR Classroom

A 2
B 5
C 7
D 8
E 13

View Answer & Explanation

Question 229:

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

SchoolNGR Classroom

A Cryolite
B Bauxite
C Potash alum
D Kaolin
E Mica

View Answer & Explanation

Question 230:

The product of the reaction between propanoic acid and ethanol is

SchoolNGR Classroom

A Prophlmethanoate
B Ethylethanoate
C Methylpropanoate
D Propylethanoate
E Ethylpropanoate

View Answer & Explanation

Stay Updated

Follow us on:

Subjects