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.
Which of the following is an alloy of mercury?
Stainless steel
Soft solder
Coinage bronze
Amalgam
Duralumin
Correct answer is D
No explanation has been provided for this answer.
The following alkanols will yield alkanoic acids on reacting with excess acidified K2Cr2O7 except
CH3CH2OH
(CH3)2CHCH2OH
(CH3)3CCH2OH
(CH3)3COH
CH3CH2CH2CH2OH
Correct answer is D
option D is a tertiary alkanol. tertiary alkanols are resistant to oxidation so cannot react with excess acidified \(K_2Cr_2O_7\) to give any product.
In which of the following processes are larger molecules broken down into smaller molecules?
Vulcanization of rubber
Hydrogenation of palm oil
Hydrolysis of starch
Polymerization
Esterification
Correct answer is C
No explanation has been provided for this answer.
The gas produced when a mixture of sodium propanoate and soda lime is heated is
methane
pentane
ethane
butene
ethyne
Correct answer is C
So during the presence of methane, sodium ethanoate with soda lime is used, using sodium propanoate with sodium will produce ethane according to the equation below
\(\CH_3CH_2COONa + NaOH → C_2H_6 + Na_2CO_3\)\
Fructose and glucose are classified as carbohydrates because they
are crystalline white solids
are energy -giving substances
are naturally occurring organic compounds
contain carbon oxygen and hydrogen
conform to the general formula Cx(H2O)y
Correct answer is E
No explanation has been provided for this answer.