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 presence of nitrogen in air is to slow down
respiration and combustion
combustion and corrosion
corrosion and respiration
respiration and transpiration
Correct answer is B
No explanation has been provided for this answer.
A supersaturated solution is said to contain
more solute than it can dissolve at that temperature in the presence of undissolved solute
as much solute as it can dissolve at that temperature in the presence of undissolved solute
as much solute as it can dissolve at that temperature
more solute than it can dissolve at that temperature
Correct answer is D
No explanation has been provided for this answer.
calcium tetraoxosulphate(VI)
calcium trioxocarbonate (IV)
calcium hydrogentrioxocarbonate (IV)
aluminium trioxocarbonate (IV)
Correct answer is B
No explanation has been provided for this answer.
The IUPAC nomenclature of compound CH3CH2COOCH2CH3 is
propyl ethanoate
ethyl butanoate
ethyl propanoate
methyl butanoate
Correct answer is C
No explanation has been provided for this answer.
Certain useful waxes are composed mainly of
amino acids
glycerols
alkanols
alkanoates
Correct answer is D
Waxes are esters of higher fatty acids with long chain of monohydric alcohols. It is a simple lipid that is an ester of a long-chain alcohol and a fatty acid. The alcohol may contain around 12-32 carbon atoms. Waxes are found in nature as coatings on leaves and stems. The wax prevents the plant from losing excessive amounts of water.