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.
Avogadro’s
Boyle’s
Charles’
Faraday’s
Graham’s
Correct answer is B
No explanation has been provided for this answer.
The type of reaction ethyne mainly undergoes is
addition
carboxylation
esterification
saponification
substitution
Correct answer is A
No explanation has been provided for this answer.
1
0.25
0.05
0.025
0.01
Correct answer is D
no of mole in 250\(cm^3\) of its solution is about molar concentration.
using n = cv
c = \(\frac{n}{v}\)
where c = molar concentration, n = number of moles and v = volume in \(dm^3\)
number of mole of NaHCO3 = mass of NaHCO3 / molar mass of NaHCO3 = \(\frac{8.4}{84}\) = 0.1moles
but v = 250\(cm^3\) = 250/1000 = 0.25\(dm^3\)
therefore c = 0.25 x 0.1 = 0.025mol\(dm^3\)
In the reaction 2H2S(g) + SO2(g) → 2H2SO(I)+3S(s)SO2is acting as _agent
a bleaching
a dehydrating
an oxidizing
a precipitating
a reducing
Correct answer is C
No explanation has been provided for this answer.
0 to 2
0 to 5
4 to 2
4 to 5
4 to 10
Correct answer is B
No explanation has been provided for this answer.