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.
X(g) → X\(^-\)(g). The type of energy involved in the above transformation is?
ionization energy
sublimation energy
lattice energy
electron affinity
Correct answer is D
No explanation has been provided for this answer.
Which of the following terms indicates the number of bonds that can be formed by an atom?
Oxidation number
Valence
Atomic number
Electronegativity
Correct answer is B
No explanation has been provided for this answer.
P
Q
R
S
Correct answer is D
No explanation has been provided for this answer.
collisions are perfectly elastic
forces of repulsion exist
forces of repulsion are in equilibrium
collision are inelastic
Correct answer is A
Collisions between gas particles or collisions with the walls of the container are perfectly elastic. None of the energy of a gas particle is lost when it collides with another particle or with the walls of the container.
CO, SO2,NO2,H2S
SO2,NO2,H2S,CO
CO,H2S,SO2,NO2
CO,H2S,NO2,SO2
Correct answer is D
- At a constant temperature and pressure, the rate lof diffusion of a gas is inversely proportional to the rate of its relative molecular mass.
- The higher the RMM of a gas the Lower the rate of diffusion and vice versa
- Hence; CO,H2S,NO2,SO2 will be the order of diffusion.