CHEMICAL PROPERTIES OF BENZENE ASSIGNMENT

1. The history of the chemical benzene is rather interesting in that it proved devilishly difficult to ascertain its structure. What was the name of the scientist who came up with the first plausible arrangement of benzene?
 Kekulé
 de Broglie
 van der Waals
 Planck
2. Benzene, also known as benzol, is a chemical that is known as a planar hexagonal ring and it consists of two different types of atom. Apart from carbon, which of the following elements is a constituent of benzene?
 Lithium
 Helium
 Argon
 Hydrogen
3. Benzene is more stable than what chemists first believed as it has a cloud of delocalised electrons. This cloud of electrons is formed by overlapping p-orbitals and is known by what Greek letter?
 Pi
 Beta
 Theta
 Epsilon
4. Benzene, instead of undergoing electrophilic addition reactions that would reduce its stability, is involved in electrophilic substitution reactions. One product of a substitution reaction involving benzene is 2,4,6-trinitromethylbenzene. By what name is this molecule more commonly known?
 Methane
 TNT
 Ozone
 Aspirin
5. When a molecule of benzene partakes in an electrophilic substitution reaction a derivative of formula -C6H5 exists. Therefore, in a monosubstituted molecule of benzene, what is the name given to -C6H5?
 Phenyl Group
 Hydroxyl Group
 Methyl Group
 Carboxyl Group
6. Due to benzene having a cloud of delocalised electrons, the molecule is more stable. This stability generated by delocalisation is known as what type of energy?
 Kinetic
 Ionisation
 Potential
 Resonance
7. An example of the electrophilic substitution reactions of benzene is halogenation. Which of the following chemical elements could be the substitute of the hydrogen that is lost during the reaction?
 Sodium
 Tungsten
 Chlorine
 Krypton
8. The molecule benzene can undergo a chemical reaction known as nitration. To carry out this reaction there is need for the presence of two concentrated acids. Nitric acid is one, but, what is the other?
 Citric Acid
 Sulfuric Acid
 Hydrochloric Acid
 Propanoic Acid
9. During the nitration of benzene, the two acids involved react to form a cation. The formula of this positive ion is NO2+, but, what is the name of this?
 Deuterium
 Nitroglycerin
 Polonium
 Nitronium
10. Due to its cyclic structure with a surrounding cloud of delocalised electrons, benzene is accurately described by which of the following chemical adjectives?
 Smelly
 Odorous
 Aromatic
 Pungent
Mugisa Geofrey and SOLOMON TATWEBWA

Mugisa Geofrey Zziwa is a learning facilitator with Ultimate MultiMedia Consult. With knowledge of the following topics:  Digital Pedagogy training or digital teaching skills, how to integrate ICT in teaching.  Journalism and the Internet/Computers (How internet helps journalism)  Basic web design & CMS and Multimedia Content publishing  Digital security and safety basics for journalists  Best practices for ensuring safety online  Data Mashups  Collaborative digital content development tools  Live streaming and Live reporting  Immersive Storytelling tools and practices  Among others I have conducted a number of trainings which include: • Multimedia Journalism and Digital Safety training for university Students held in Makerere University, Kampala International University and Cavendish University and sponsored by the American Embassy Uganda. • Digital Pedagogy training for Science Technology Engineering and Mathematics (STEM) Teachers held in Iganga Girls SSS in Iganga District for Eastern region Uganda, St. Maria Gorretti in MPigi District for Central region Uganda, and Teso College ALOET for the Karamoja region Uganda. Sponsored by Forum for African Women Educationalists Uganda (FAWEU) Training Teachers on integration of ICT in teaching and delivering lessons to students. • Digital Pedagogy at American Center for Teachers by Teachers In Need (TIN) Uganda. • Facilitator on Digital Pedagogy with ICT Teachers Association Uganda (ITAU) at American Center, Kyebambe Girls SSS in FortPortal for western region Uganda, Dr. Obote College Boro Boro Lira for Nothern Region Uganda.

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