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 mass of one Avogadro number of helium atom is
1.00 gram
4.00 gram
8.00 gram
4 x 6.02 x 1023 gram
Correct answer is B
No explanation has been provided for this answer.
The number of waves in n x 10th Bohr's orbit are
n2
n
n-2
n3
Correct answer is B
No explanation has been provided for this answer.
The oil used in the froth floatation process is
coconut oil
olive oil
kerosene oil
pine oil
Correct answer is D
No explanation has been provided for this answer.
platinum
silver
iron
gold
Correct answer is D
No explanation has been provided for this answer.
The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is
1.568 x 103
6.023 x 1019
4.84 x 1017
6.023 x 1023
Correct answer is B
No explanation has been provided for this answer.