Post Utme Chemistry Past Questions and Answers

Question 501:

The equation \({ }_{7}^{14} N +{ }_{2}^{4} He \rightarrow{ }_{8}^{17} O +{ }_{1}^{1} P\) represents.

A. Nuclear fusion
B. Nuclear fission
C. Artificial radioactivity
D. Nuclear fission using positron

Question 502:

Which of the following is a general method of preparing acids?

A. Direct combination of constituent elements
B. Double decomposition involving a salt solution
C. Reaction between an anhydride and wate
D. Reaction between a base and an amphoteric oxide
E. Dissolution of hydroxides followed by neutralization

Question 503:

Monosaccharides are ____________

A. Hydrolysable
B. Non-hydrolysable
C. Not soluble in wate
D. Sweet but sometimes non sugary

Question 504:

The major air pollutants that can result from smoky vehicles include ____________

A. Acid fumes
B. Hydrogen sulphide
C. Carbon (II) oxide
D. Carbon particles

Question 505:

If an element has the electronic configuration \(1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p^{4}\), it is ____________

A. Metal
B. An alkaline earth metal
C. An S-block element
D. A P-block element