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.
What are the two gases associated with the formation of acid rain?
CO2 and HCI
CO2 and N2
CO2 and NO2
HCI ans SO2
Correct answer is C
No explanation has been provided for this answer.
magnesium tetraoxosulphate (VI)
suspended solids
Organic impurities
calcium hydrogentrioxocarbonate (IV)
Correct answer is D
No explanation has been provided for this answer.
What is the main impurity in haematite?
CaSiO3
CaCO3
SiO3
Fe2O3
Correct answer is C
No explanation has been provided for this answer.
Which of the following compound is used for removing impurities from bauxite?
NaOH
CaCO3
Na3AIF6
H2SO4
Correct answer is A
No explanation has been provided for this answer.
400 cm3
625 cm3
1000 cm3
1600 cm 3
Correct answer is B
Conc. g/dm3 = 0.20 x 40 gmol -1 = 8 g/dm3
1000 cm3 of 0.20m NaOH contains 8g of NaOH :. 5g of NaOH will be contained in 5/8 x 1000 x 625cm3