Compounds MCQs with Answers

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The molecular mass of water (H₂O) is 18 amu.

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An example of an ionic compound is NaCl (sodium chloride), which is formed by the transfer of electrons between sodium and chlorine atoms.

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Solid CO₂ (dry ice) has a linear molecular structure, where individual CO₂ molecules are held together by weak van der Waals forces in a molecular crystal lattice.

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In water, the ratio of oxygen to hydrogen by mass is 8:1.

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The structure of Na⁺Cl⁻ is face-centered cubic (FCC).

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The functional group -COOH is used for Carboxylic acids.

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The molecular shape of carbon dioxide (CO₂) is linear structure because the two oxygen atoms are arranged at 180° on opposite sides of the central carbon atom.

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CsF (caesium fluoride) has the highest ionic character because it has the largest difference in electronegativity between its constituent atoms.

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C₂H₆O has 2 structural isomers: ethanol (ethyl alcohol) and dimethyl ether (methoxymethane).

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Phenols do not contain a carbonyl group; they consist of a hydroxyl group (–OH) directly attached to a benzene ring.