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Which of the following is/are an example of Exothermic reaction?
Respiration
  • Rusting of Iron
  • Mixing water and Lime
    Select the correct answer using the code given below.
    • a)
      1 only
    • b)
      1 and 3 only
    • c)
      2 and 3 only
    • d)
      1, 2 and 3
    Correct answer is option 'D'. Can you explain this answer?
    Verified Answer
    Which of the following is/are an example of Exothermic reaction? Re...
    Reactions in which heat is given out along with the products are called exothermic reactions.
    Option 1 is correct: We all know that we need energy to stay alive. We get this energy from the food we eat. During digestion, food is broken down into simpler substances. For example, rice, potatoes and bread contain carbohydrates. These carbohydrates are broken down to form glucose. This glucose combines with oxygen in the cells of our body and provides energy. The special name of this reaction is respiration.
    Option 2 is correct: You must have observed that iron articles are shiny when new, but get coated with a reddish brown powder when left for some time. This process is commonly known as rusting of iron. Some other metals also get tarnished in this manner. Have you noticed the colour of the coating formed on copper and silver? When a metal is attacked by substances around it such as moisture, acids, etc., it is said to corrode and this process is called corrosion. The black coating on silver and the green coating on copper are other examples of corrosion.
    Option 3 is correct: An exothermic reaction is a chemical reaction that releases energy in the form of light or heat. It gives net energy to its surroundings. That is, the energy needed to initiate the reaction is less than the energy that is subsequently released. (reactants → products + energy) Examples of exothermic reactions: Calcium oxide reacts vigorously with water to produce slaked lime (Calcium hydroxide) used in white washing, releasing large amounts of heat.
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    Which of the following is/are an example of Exothermic reaction? Respiration Rusting of Iron Mixing water and Lime Select the correct answer using the code given below.a)1 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?
    Question Description
    Which of the following is/are an example of Exothermic reaction? Respiration Rusting of Iron Mixing water and Lime Select the correct answer using the code given below.a)1 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following is/are an example of Exothermic reaction? Respiration Rusting of Iron Mixing water and Lime Select the correct answer using the code given below.a)1 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is/are an example of Exothermic reaction? Respiration Rusting of Iron Mixing water and Lime Select the correct answer using the code given below.a)1 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?.
    Solutions for Which of the following is/are an example of Exothermic reaction? Respiration Rusting of Iron Mixing water and Lime Select the correct answer using the code given below.a)1 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
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