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.
1.80g
3.55g
7.10g
15.50g
Correct answer is B
1 mole Cl\(_2\) occupy 22.4dm\(^3\)
i.e 2 x 35.5 → 22.4 ; x → 1. 12
:. x = \(\frac{1.12}{22.4}\) x 2 x 35.5 = 3.55
50cm3
150cm3
200cm3
300cm3
Correct answer is B
According to the equation 2NH3 → N3 + 3H2
2 x 22400cm3 of ammonia will produce
3 x 22400cm3 of hydrogen
If 100cm3 of NH3 is used.
:. H2 volume = \(\frac{100}{2x22400} x 3x22400
=150cm3
Which of the following decreases when a given mass of gas is compressed to half its initial volume?
Average intermolecular distance
Frequency of collisions
Number of molecules present
Atomic radius of each particle
Correct answer is A
No explanation has been provided for this answer.
If a metal R forms a compound with the formula R(NO3)2 , the formula of its tetraoxosulphate (IV) is
R(SO4)2
RSO4
R2SO4
R2(SO4)3
Correct answer is B
No explanation has been provided for this answer.
3
4
5
6
Correct answer is A
No explanation has been provided for this answer.