Post Utme Chemistry Past Questions and Answers

Question 26:

A side effect of soft water is that ____________

A. It gives offensive taste
B. Excess calcium is precipitated
C. It encourages the growth of bacteria
D. It attacks lead contained in pipes

Question 27:

Ammonia is very soluble in water because it is a /an molecule

A. Non-polar
B. Polar
C. B reactive
D. Basic
E. Acidic

Question 28:

Elements \(P, Q, R, S\), have \(6,11,15\) and 17 electrons respectively, therefore ____________

A. \(P\) will form an electrovalent bond with \(R\)
B. \(Q\) will form a covalent bond with \(S\)
C. R will form an electrovalent bond with \(S\)
D. Q will form an electrovalent bond with \(S\)

Question 29:

In the oil drop experiment, Millikan determined the ____________

A. Charge to mass ratio of the electron
B. Mass of the electron
C. Charge of the electron
D. Mass of the proton

Question 30:

One of these atomic shells is the most stable

A. \(M\)
B. \(N\)
C. \(KD. L\)
D. O