Post Utme Chemistry Past Questions and Answers

Question 921:

What mass of a divalent metal M (atomic mass 40 ) would react with excess hydrochloric acid to liberate \(224 cm ^{3}\) of dry hydrogen gas measured as s.t.p.? ( GMV =22.4 dm 3)\)

A. 8.0gb
B. 0.04g
C. 0.4g
D. 1.0g

Question 922:

Which of the folfowing is ankacid salt?

A. \(NaHSO _{2}\)
B. \(Na _{2} SO _{4}\)
C. \(CH _{3} COONa\)
D. \(Nab S\)

Question 923:

An element with afomic number twelve is likely to be of _____________

A. Electrovalent whal with a valency of the
B. Electrovalent with a valency of 2
C. Covalent with a valency
D. Covalent with a valency of 4

Question 924:

The approximate volume of air containing \(10 cm 3\) of oxygen is _____________

A. 10 cm
B. 20 cm
C. 50 cm
D. 100cm

Question 925:

Duralumin consist of aluminium, copper and _____________

A. Zinc and gold
B. Lead and manganese
C. Nickel and silver
D. Manganese and magnesium