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 is a measure of the average kinetic energy of the molecules of a substance?
Volume
Mass
pressure from age grades
Temperature
Correct answer is D
No explanation has been provided for this answer.
400 k
480 k
550 k
600 k
Correct answer is D
No explanation has been provided for this answer.
2,2,5 and 1
3,2,5 and 2
3,2,6 and 1
2,2,6 and 2
Correct answer is C
No explanation has been provided for this answer.
How many moles of (H+) are there in 1 dm3 of 0.5 M solution of H2SO4?
2.0 moles
1.0 moles
0.5 mole
0.25 mole
Correct answer is B
mole = (M x V ) / (1000cm3) = (0.5 x 1000cm3) = 0.5 moles
For H2SO4 → 2H+SO42-
1 mole of H+ = 0.5 moles
2H+ = 2 x 0.5 mole = 1.0 mole
metals have very high melting points
metals conduct heat very repaidly
melting does not break the metalic bond but boiling does
the crystal lattice of metals is easily broken
Correct answer is A
No explanation has been provided for this answer.