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 Van der waals' forces are dominant intermolecular forces in_______?
Ammonium chloride
Chlorine
Sodium chloride
Water
Correct answer is B
No explanation has been provided for this answer.
How many orbits are contained in an atom with atomic number 13?
7
6
5
3
Correct answer is D
No explanation has been provided for this answer.
The negatively charged particle in an atom is the
Electron
Neutron
Positron
Proton
Correct answer is A
No explanation has been provided for this answer.
The alkanol obtained from the production of soap is
Dihydric Alkanol
Tertiary Alkanol
Trihydric Alkanol
Monohydric Alkanol
Correct answer is C
No explanation has been provided for this answer.
Which of the following metals is common to both brass and bronze?
Aluminium
Copper
Lead
Iron
Correct answer is B
No explanation has been provided for this answer.
A consequences of global warming is
Air pollution
Flooding
Increased humidity
Water pollution
Correct answer is B
Global warming is a gradual increase in the earth’s temperature generally due to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants., consequences of global warming include: Seasonal/climate change, Rising oceans, Increase in flooding occurrences. Melting ice caps or polar ice. Increase in the average temperature of the world.
Which of the following sources of energy contributes to green-house effect?
Natural gas
Nuclear
Wind
Solar
Correct answer is A
No explanation has been provided for this answer.
64.2dm3
33.6dm3
11.2dm3
3.73dm3
Correct answer is B
C2H4(g) + 3O2(g) \(\to\) 2CO2(g) + 2H2O(l)
1 mole of ethene required 3 moles of O2
28g of ethene required 3 x 22.4dm3 of O2
14g will require \(\frac{14 \times 3 \times 22.4dm^3}{28}\)
= 33.6dm3
I only
II only
I and III only
II and III only
Correct answer is B
No explanation has been provided for this answer.
The compound that makes palm wine taste sour after exposure to the air for few days is
Ethanol
Ethanoic acid
Methanol
Methanoic acid
Correct answer is A
The ethanol (alcohol content) of the wine, is oxidized, by the oxygen in the air into ethanoic acid.
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