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No verified paper has been uploaded for PPSC-PMS Paper Chemistry 2005 MCQs yet. The MCQs below are drawn from the Chemistry subject category.
A double bond is made up of one sigma bond and one Pi bond, which provides the necessary stability and reactivity to molecules. This combination allows for the unique properties of double bonds in chemistry.
ClO2 is a paramagnetic oxide of chlorine, meaning it is attracted to magnetic fields. The other options, Cl2O7 and Cl2O6, are not paramagnetic, while 'all' is an incorrect answer because it is not specific to the correct oxide.
Boron exhibits a unique ability to form molecular addition compounds, which is a notable feature of its chemistry. This property allows boron to combine with other molecules to form complexes, setting it apart from other elements.
J.Perrin studied the angle of deflection, a crucial aspect in understanding the behavior of particles. His work contributed significantly to the field of physics, particularly in the study of charged particles.
When exposed to air, the crystals of Na2CO3.10H2O lose water of crystallization and remain solid, a process known as dehydration.
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Phonons are quantized packets of energy that correspond to the vibrations of atoms in a solid, also known as elastic waves. They are the quanta of sound in a crystal lattice.
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Manual review recommended: automated enrichment was incomplete for this item. The original answer and options were preserved. No Gemini key is configured. Add GEMINI_API_KEY to the local server environment or save a Gemini provider key in Settings.
Chlorophyll is a magnesium-porphyrin complex. The magnesium ion is coordinated at the center of the porphyrin ring, playing a critical role in light absorption during photosynthesis. Other options like Vitamin B12 contain cobalt, while haemocyanine contains copper.
