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Uttarakhand Board Class 10 Class10 Chem Redox Energy — practice questions

Explore 2 free Class10 Chem Redox Energy questions in Uttarakhand Board Class 10 Science. Open each question or exercise to read its content, reference answers and available explanation.

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Class10 Chem Redox Energy questions and exercises with answers

Showing questions 1–2 of 2.

Oxidation in chemistry means:Read the answer and worked solution →Respiration is which kind of reaction?Read the answer and worked solution →

Worked practice questions

Oxidation in chemistry means:

  1. Loss of oxygen
  2. Gain of electrons
  3. Gain of oxygen or loss of electrons
  4. Splitting of the compound
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Correct answer: C. Gain of oxygen or loss of electrons

Oxidation is defined as gain of oxygen OR loss of electrons. The opposite of reduction.

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Respiration is which kind of reaction?

  1. Endothermic
  2. Neither
  3. Photochemical
  4. Exothermic
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Correct answer: D. Exothermic

Respiration releases energy (heat + ATP). It is exothermic; ΔH < 0.

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