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 processes is used in food preservation in an industry?
Carbon dating
Ieeadiation of gamma rays
Nuclear fission
Nuclear fusion
Correct answer is B
No explanation has been provided for this answer.
Which of the following arrangements is in decreasing order of atomic radius?
Li>Be>C>
Li>B>Be>C
Li>Be>B>C
C>B>Be>Li
Correct answer is C
No explanation has been provided for this answer.
The two elements 11X and 19Y are in the same group because they have the same
valence electrons
ionization energy
number of shell
atomic size
Correct answer is A
No explanation has been provided for this answer.
Hydrogen bonds are formed between molecules containing a hydrogen atom bonded to a
strongly electronegative atom
non-polar species
diatomic element
complex ion
Correct answer is A
No explanation has been provided for this answer.
The crystal layers in graphite are held together by
covalent bond
electrostatic forces
ionic bond
van der Waal's forces
Correct answer is D
The atoms in a given layer are held together by strong covalent linkages, but the forces between the layers are the weak van der waals forces