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 oxides has a giant covalent structure?
Al\(_2\)O\(_3\)
Na\(_2\)O
P\(_4\)O\(_10\)
SiO\(_2\)
Correct answer is D
- Silicon dioxide is an example of a substance with a giant covalent structure . It contains many silicon and oxygen atoms. All the atoms in its structure are linked to each other by strong covalent bonds. The atoms are joined to each other in a regular arrangement, forming a giant covalent structure.
The bond between NH\(_3\) and H\(^+\) in NH4\(^+\) is?
dative
covalent
hydrogen
electrovalent
Correct answer is A
No explanation has been provided for this answer.
0.031
0.125
0.640
1.560
Correct answer is B
No explanation has been provided for this answer.
3.75 dm\(^3\)
7.59 dm\(^3\)
15.0 dm\(^3\)
30.0dm\(^3\)
Correct answer is C
1 mole of methane reacts with 2 moles of oxygen
1 vol of methane reacts with 2 vol of oxygen
: 7.5 vol of methane will yield 15 vol of oxygen in dm\(^3\)
3P
2P
\(frac{3}{2}\) P
\(frac{2}{3}\) P
Correct answer is C
No explanation has been provided for this answer.