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The process of removing hydrogen from a substance is called:
Oxidation
Reduction
Hydrogenation
Electrolysis
Oxidation
Oxidation is chemically defined as the addition of oxygen or electronegative elements, or the removal of hydrogen or electropositive elements from a substance. Conversely, reduction involves the addition of hydrogen or the removal of oxygen.
Oxidation is chemically defined as the addition of oxygen or electronegative elements, or the removal of hydrogen or electropositive elements from a substance. Conversely, reduction involves the addition of hydrogen or the removal of oxygen.
Think of hydrogen as a protective blanket or shield; losing that hydrogen strips away that protective coat, which exposes the molecule to a higher oxidation state, much like metal losing its coating and rusting.
OILRIG (Oxidation Is Loss [of electrons/hydrogen], Reduction Is Gain) or LEO says GER (Lose Electrons/Hydrogen: Oxidation, Gain Electrons/Hydrogen: Reduction).
H2тАЛ тАФ Hydrogen gas
O2тАЛ тАФ Oxygen gas
During a chemical reaction involving oxidation, the species that loses hydrogen atoms undergoes an increase in its oxidation state. This typically involves the loss of electrons or an increase in oxygen-to-hydrogen ratio in organic or inorganic compounds.
Removal of hydrogen is defined as oxidation.
Addition of hydrogen is defined as reduction.
Oxidation can also involve the loss of electrons or addition of oxygen.
Combustion reactions
Metabolic dehydrogenation in cellular respiration
Option B (Reduction) is the exact opposite process involving the addition of hydrogen.
Option C (Hydrogenation) is the process of adding hydrogen to unsaturated compounds.
Option D (Electrolysis) is a process using electricity to drive a non-spontaneous chemical reaction.
A is correct тАФ Oxidation is defined as the process of removing hydrogen or adding oxygen to a substance.
Always remember the classical definitions of oxidation and reduction alongside electronic concepts to solve RRB JE questions quickly.
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