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.
The modern process of manufacturing steel for iron is by
treatment with acids
oxidation
blast reduction
treatment with alkanal
Correct answer is C
No explanation has been provided for this answer.
Chlorine gas turns a damp starch-iodide paper
pink
colourless
red
dark blue
Correct answer is D
No explanation has been provided for this answer.
The metal that liberates hydrogen from cold water in bubbles only is?
Na
K
Ca
Al
Correct answer is C
After a second or so, the calcium metal begins to bubble vigorously as it reacts with the water, producing hydrogen gas, and a cloudy white precipitate of calcium hydroxide.
The salt that will form a precipitate soluble in excess ammonia solution is
Ca(NO3)2
Cu(NO3)2
Mg(NO3)2
Al(NO3)3
Correct answer is B
No explanation has been provided for this answer.
Which of the following statements is true of sulphur (IV) oxide?
It forms tetraoxosulphate (VI) acid with water
It is an odourless gas
It is an acid hybride
It forms white precipitate with acidified barium chloride
Correct answer is C
No explanation has been provided for this answer.