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 compounds would release hydrogen when reacted with sodium metal?
I. CH3COOH
II. CH3CH2OH
III. CH3COOCH3
I only
I and II only
Il and IIl only
I and Ill only
Correct answer is B
No explanation has been provided for this answer.
An alkanol containing 60% carbon by mass would have a molecular formula [H=1.0. C-12.0, O= 16.0]
CH3OH
C2H5OH
C3H7OH
C4H9OH
Correct answer is C
No explanation has been provided for this answer.
Which of the following compounds has the lowest boiling point?
C4H10
CH3COOH
H2O
C2H5OH
Correct answer is A
| COMPOUNDS | BOILING POINTS |
| Butane |
-1 °C |
| Ethanoic acid |
118 °C |
| Water |
100 °C |
| Ethanol |
78.37 °C |
The type of isomerism exhibited by cis and trans isomers is?
positional
geometrical
functional
optical
Correct answer is B
- Cis–trans isomerism, also known as geometric isomerism or configurational isomerism arises when atoms or groups are arranged differently in space due to restricted rotation of a bond or bonds in a molecule.
The following molecules have double covalent bonds between two atoms except?
oxygen
carbon (IV)oxide
ethene
water
Correct answer is D
In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond.