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.
To what temperature must a gas at 273k be heated in order to double both its volume and pressure?
298K
546K
819K
1092K
Correct answer is D
No explanation has been provided for this answer.
Which of the following is an example of a chemical change?
dissolution of salt in water
rusting of iron
melting of ice
separating a mixture by distillation
Correct answer is B
No explanation has been provided for this answer.
The type of bonding in [Cu(NH3)4]2+ is
coordinate
electrovalent
metallic
covalent
Correct answer is A
No explanation has been provided for this answer.
What is the PH of 0.00 1 moldm3 solution of the sodium hydroxide
14
13
12
11
Correct answer is D
No explanation has been provided for this answer.
A substance that is used as a ripening agent for fruits is
ethene
propane
methane
butane
Correct answer is A
No explanation has been provided for this answer.