Chemistry (General Concepts) MCQs with Answers

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A solution that can dissolve more solute at a given temperature is called an Unsaturated Solution.

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Burning of wood is an example of a chemical change because it produces new substances (ash, carbon dioxide, water vapour) that cannot be reversed to the original wood.

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Most molecular crystals melt below 200°C because they are held together by weak intermolecular forces (van der Waals forces or hydrogen bonds) rather than strong ionic or covalent bonds.

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When a substance dissolves in a liquid without forming a new substance, the resulting homogeneous mixture is called a solution.

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Metal chlorides are preferred for flame tests because they are highly volatile and produce distinct, easily observable flame colours.

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EDTA is called a polydentate ligand because it can donate multiple electron pairs from several donor atoms to a central metal ion simultaneously.

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Dipole moment is a measure of polarity of a chemical bond or molecule.

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The oxidation number of Cl in Ca(ClO₂)₂ is +3.

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In a suspension, the solute is not completely dissolved in the solvent and particles remain visibly dispersed.

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Crystals formed as a result of Van der Waals interactions are called molecular crystals.