Question 11: VerticalCOMPREHENSIONWhich of the following revisions changes the meaning of the text in the following unedited passage?In this study, successful synthesis of graphene oxide (GO) by the modified Hummers method, as the precursor for preparing graphene. The structures of materials were measured by Fourier-transform infrared spectra analyzer and X-ray diffraction. The transmission electron microscopy and dynamic force microscopy analyses showed successful preparation of GO films on microscopic morphology. The presentation of oxygen-containing functional groups, such as C=O and C–O, confirmed that the graphite indeed was oxidized into GO and was consistent with the literatures.In this study, we successfully synthesized graphene oxide (GO), a precursor for preparing graphene, by the modified Hummers method.The material structures were characterized using Fourier-transform infrared spectroscopy and X-ray diffraction.We successfully prepared GO films on microscopic morphology using transmission electron microscopy and dynamic force microscopy analyses.The presentation of oxygen-containing functional groups, such as C=O and C–O, was observed in the literature; accordingly, we confirmed that the graphite was indeed oxidized into GO.

For decades, the existence of graphene, a material only one atom thick, was considered purely theoretical, but in 2004, physics researchers Andre Geim and Konstantin Novoselov created it in a lab by arranging carbon in a hexagonal lattice structure. Their subsequent studies documenting the material, for which they jointly won the Nobel Prize in Physics in 2010, ------- graphene’s extraordinary strength, electric conductivity, transparency, and density.Which choice completes the text so that it conforms to the conventions of Standard English?to demonstrateeliminateand demonstratedeliminatedemonstratedeliminatedemonstrating

Despite being composed entirely of carbon atoms, diamond and graphite exhibit distinct structures and properties due to their unique atomic ______ its tetrahedral structure where each carbon atom bonds to four others, diamond emerges as the hardest known material, while in contrast, graphite, comprised of layers of carbon atoms linked in hexagonal patterns but weakly bonded to other layers, displays both hardness and slipperiness, making it an ideal choice for pencil lead.15 Mark For Review15Which choice completes the text so that it conforms to the conventions of Standard English?A) arrangements withB) arrangements, withC) arrangements. WithD) arrangements and with

____________ is the perfectly crystalline allotropic pair of carbon.A Coal and fullerene B Graphite and Lampblack C Graphite and fullerene D Diamond and coke

Graphene and fullerenes are carbon-based nanoparticles.Group of answer choicesTrueFalse

In the electrolysis of aluminium oxide, the electrodes are made of carbon in the form of graphite. Which of the following statements is not true?The presence of carbon electrodes reduces the amount of energy required for the electrolysis reactionGraphite is used as an electrode because it is a good conductor of electricityCarbon is relatively unreactive, and the electrodes do not therefore react with the aluminium oxide during electrolysisAt extremely high temperatures, the oxygen produced during electrolysis reacts with the carbon anode to form carbon dioxide