Post Utme Chemistry Past Questions and Answers

Question 896:

The formula \(( CH 3)_{3} COH\) is that of ____________

A. Polyhydric alcohol
B. Secondary alkanol
C. Tertiary alkanol
D. Primary alkanol
E. Trihydricalkanol

Question 897:

What is the number of oxygen atoms in \(32 g\) of the gas? \(\left( O =16, L =6.0 \times 10^{24} mor \right)\).

A. \(3.2 \times 10^{23}\)
B. \(6.0 \times 10^{23} \)
C. \(1.20 \times 10^{24}\)
D. \(1.60 \times 10^{24}\)
E. \(2.0 \times 10^{24}\)

Question 898:

The ionic radii of metals are usually ____________

A. Greater than their atomic radii
B. Unaffected by the charge of the ion
C. Less than their atomic radii
D. Greater than those of non-metals
E. The same as their atomic radii

Question 899:

The number of electrons in the K. L. \(M\) and \(N-\) shells of calcium are respectively

A. \(2,8,8,2\)
B. \(2,2,8,8\)
C. \(2,8,2,8\)
D. \(8,8,2,2\)

Question 900:

The basic unit of synthetic rubber is ___________

A. Isoprene
B. Pentane
C. Butadiene
D. Butene