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.
In a chemical reaction, ∆H is positive when
H (product) >H (reactant)
H(product) < H (reactant)
H (product) = H (reactant)
H (product) = Zero (reactant)
Correct answer is A
No explanation has been provided for this answer.
atmospheric pressure
partial pressure
total pressure
vapour pressure
Correct answer is B
No explanation has been provided for this answer.
What is the value of -14oC on the Kelvin temperature scale?
259K
287 K
287oK
259oK
Correct answer is A
No explanation has been provided for this answer.
What is the percentage by weight of calcium in Ca(OCI)2? [Ca = 40, Cl = 35.5, O = 16]
28.0%
31.6%
43.8%
44.5%
Correct answer is A
No explanation has been provided for this answer.
10.6 g
16.8 g
21.2 g
42.4 g
Correct answer is C
No explanation has been provided for this answer.