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 IUPAC name for the compound \(ClCH_{2}CH_{2}OH\) is
1- chloropropanol
2-chloropropanol
1-chloroethanol
2-chloroethanol
Correct answer is D
The parent chain for the compound is \(C_{2}H_{5}OH\) in which one of the hydrogen atoms is replaced by the Cl atom. Giving the chlorine the highest number while naming, we have 2- chloroethanol.
sucrose
maltose
galactose
mannose
Correct answer is B
A maltose is a dissacharide formed from two units of glucose.
Fats and oils can be obtained from any of the following sources except
paraffin oil
animals
groundnuts
palm kernel
Correct answer is A
Paraffin oil is gotten from petroleum distillation and can't be a source of fats and oil.
Which of the following pairs of gases are pollutants from car exhaust?
Nitrogen(II) oxide and Carbon(IV) oxide
Carbon(IV) oxide and Nitrogen
Carbon(II) oxide and Sulphur(IV) oxide
Carbon(II) oxide and oxygen
Correct answer is C
No explanation has been provided for this answer.
The name of the compound \(C_{4}H_{9}COOC_{3}H_{7}\) is
propyl pentanoate
pentyl propanoate
butyl propanoate
propyl butanoate
Correct answer is A
The alkyl group is attached to the parent chain being a carboxylic acid. The name of the compound is gotten by writing the name of the attached alkyl group first and then the parent carboxylic acid is written but you change the -oic acid to -oate.
The alkyl group in this case is \(C_{3}H_{7}\)
The parent carboxylic acid is \(C_{4}H_{9}COOH\) which is pentanoic acid.
Hence, the name is propyl pentanoate.