Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
Which of the these metals will not liberate hydrogen from dilute HCI?
Copper
Iron
Magnesium
Zinc
Correct answer is A
No explanation has been provided for this answer.
What volume will 0.5 g of H2 occupy at s.t.p? [H = 1; 1 mole of a gas occupy 22.4 dm3 at s.t.p.]
2.24 dm3
5.60dm3
11.20dm3
44.80dm3
Correct answer is B
No explanation has been provided for this answer.
Pig-iron is brittle because it contains
a high percentage of carbon as impurity
calcium trioxosilicate (IV)
unreacted haematite
undecomposed limestone
Correct answer is A
No explanation has been provided for this answer.
The following substances are heavy chemicals except
sodium trioxocarbonate (IV)
tetraoxosulphate (VI) acid
lead (lV) tetraethyl
sodium hydroxide
Correct answer is C
No explanation has been provided for this answer.
Decantation
Distillation
Evaporation
Filtration
Correct answer is B
No explanation has been provided for this answer.