Post Utme Chemistry Past Questions and Answers

Question 1066:

The number of isomeric forms that can be formed from \(C _{3} H _{6} Br _{2}\) is ____________

A. 5
B. 4
C. 3
D. 2

Question 1067:

\(1500 cm ^{3}\) of a hydrocarbon at s.t.p burns in air to give \(450 cm ^{3}\) of \(CO _{2}\) and \(0.392 g _{2}\) of \(H _{2} O\). What is the empirical formula of the compound?

A. \(C _{3} H _{5}\)
B. \(C _{3} H _{6}\)
C. \(C _{3} H _{8}\)
D. \(C _{3} H _{7}\)

Question 1068:

One of the following is an acid salt?

A. \(NaHCO _{3}\)
B. \(\left( NH _{4}\right)^{2} SO _{4}\)
C. \(Ca \left( NO _{3}\right)_{2}\)

Question 1069:

What will be the indicator used when \(Na _{2} CO _{3}\) react with \(HCl\) in complete neutralization.

A. Universal indicator
B. No indicator
C. Methyl orange
D. Phenolphthalein

Question 1070:

The mass of \(Al\) produced during electrolysis is \(1.56 g\), what will be the mass of \(Cu\) deposited if the same quantity of electricity is used? \(Cu 63.5 Al -27\).

A. \(11.84 g\)
B. \(238 g\)
C. \(23.6 g\)
D. \(5.3 g\)