Chemistry (General Concepts) MCQs with Answers

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The active part in organic molecules is called a functional group.

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The essential condition for optical activity of an organic compound is the presence of asymmetric carbon (a carbon atom bonded to four different groups).

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The Law of Conservation of Mass was given by Antoine Lavoisier.

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The functional group present in aldehydes is the carbonyl group (–CHO), where a carbon atom is double-bonded to oxygen and single-bonded to at least one hydrogen atom.

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Cu2+ salt solution appears blue due to the transition of electrons within the split d to d orbital (d-d transition).

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Strongest hydrogen bonding occurs in H₂O (water) because each water molecule can form up to four hydrogen bonds due to its two hydrogen atoms and two lone pairs on oxygen.

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Carboxylic acids are organic acids that contain the carboxyl group (–COOH).

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An example of a heterogeneous mixture is sand and water because its components are visibly distinct and can be separated by physical means.

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Hydrocarbons containing only single covalent bonds between carbon atoms are called Alkanes.

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The periodic table is divided into s, p, d, and f blocks based on the electronic configuration of elements, specifically which orbital the last electron enters.