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 diagram above represents an atom of
magnesium
helium
chlorine
neon
Correct answer is A
The diagram refers to an atom with electronic configuration 2,8,2 hence the atomic number = 12. From the periodic table, we have the atom to be Mg (Magnesium).
The function of the copper (ll)tetraoxosulphate (IV) in dilute H2SO4 in the figure above is to
dry the gas
absorb phosphine impurity
absorb ethene impurity
from an acetylide with ethyne
Correct answer is B
No explanation has been provided for this answer.
The IUPAC nomenclature for the compound above is
dimethlhexane
3,5 dimethylhexane
1.1 dmethyl, 3 methylpentane
2.4 dimethylhexane
Correct answer is D
No explanation has been provided for this answer.
The two functional groups in the above compound are
alcohol and amine
acid and amine
aldehyde and acid
ketone and amine
Correct answer is B
No explanation has been provided for this answer.
Increase in temperature
Increase in the concentration of a reactant
Addition of a catalyst
Increase in pressure
Correct answer is C
No explanation has been provided for this answer.