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.
In the reaction above, the most suitable catalyst is?
chromium(vi)oxide
iron(iii)oxide
copper(i)oxide
vanadium(v)oxide
Correct answer is D
During the Contact Process for manufacturing sulfuric acid, sulfur dioxide has to be converted into sulfur trioxide, which is done by passing sulfur dioxide and oxygen over a solid vanadium(V) oxide catalyst.
The IUPAC nomenclature of the structure is?
3-chloro-3-methylbutane
2,2,-dichloro-3-methylbutane
3-methylchlorobutane
2-chloro-2-methylbutane
Correct answer is D
Straight-chain hydrocarbon molecules that contain only singly-bonded carbons are called alkanes.
When naming these molecules, the final syllable in their name is "ane."
The sub-atomic particles located in the nucleus of an atom are?
neutron and proton
proton and electron
proton and ions
neutron and electron
Correct answer is A
The nucleus contains two types of subatomic particles, protons and neutrons.
The protons have a positive electrical charge and the neutrons have no electrical charge.
A third type of subatomic particle, electrons, move around the nucleus.
Which of the following scientists discovered the electrons?
Joseph J. Thompson
James Chadwick
Amedeo Avogadro
Ernest Rutherford
Correct answer is A
No explanation has been provided for this answer.
A coordinate covalent bond could be formed between?
NH3 and PCl3
BCl3 and AlCl3
BCl3 and NH3
H+ and AlCl3
Correct answer is C
A coordinate covalent bond, also known as a dative bond, dipolar bond, or coordinate bond is a kind of two-center, two-electron covalent bond in which the two electrons derive from the same atom.