Here Sodium and Barium are displaced from each other's salts hence it is a double displacement reaction.Ĩ. Which among the following is(are) double displacement reaction(s)? Purple color appeared due to potassium permanganate when all the permanganate solution is utilized.ħ. In this reaction potassium permanganate is an oxidizing agent. (a) KMnO 4 is an oxidising agent, it oxidises FeSO 4 (d) KMnO 4 is an unstable compound and decomposes in presence of FeSO 4 to a colourless compound. (c) The colour disappears due to dilution no reaction is involved (b) FeSO 4 acts as an oxidising agent and oxidises KMnO 4 (a) KMnO 4 is an oxidising agent, it oxidises FeSO 4 Which of the following is the correct explanation for the observation? The light purple colour of the solution fades and finally disappears. A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. (iv) In beaker C endothermic process has occurred.Įxothermic processes will increase the temperature wherease exothermic processes will decrease the temperature.Ħ. (iii) In beaker C exothermic process has occurred. (ii) In beakers A and B, endothermic process has occurred. (i) In beakers A and B, exothermic process has occurred. Which one of the following statement(s) is(are) correct? It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. A small amount of NaOH, anhydrous CuSO 4 and NaCl were added to the beakers A, B and C respectively. Three beakers labelled as A, B and C each containing 25 mL of water were taken. Which of the following are exothermic processes?Įxothermic process are the one which release enormous amount of heat When water reacts with water and acid reacts with water it releases enormous amount of heat.ĥ. Water is providing oxygen and it acts as an oxidizing agent.Ĥ. Oxygen is removed from water hence it is getting reduced. Here, Oxygen combines with water to get oxidized. Which of the following statements about the given reaction are correct?ģFe(s) + 4H 2O(g) → Fe 3O 4 (s) + 4H 2 (g) Here nitrogen is getting oxidized and oxygen is reduced.ģ. The reaction provided is a mixture of displacement and redox reaction because in this reaction oxygen displace hydrogen in the ammonia. The following reaction is an example of a 4NH 3 (g) + 5O 2 (g) → 4NO(g) + 6H 2O(g) (d) Combustion of Liquefied Petroleum Gas(LPG)Ĭombustion is always a chemical change because new compound is formed after burning and it is irreversible.Ģ. (d) Combustion of Liquefied Petroleum Gas (LPG) (a) Boiling of water to give water vapour Which of the following is not a physical change? NCERT Exemplar Solutions for Chapter 1 Chemical Reactions and Equations Class 10 Science Multiple Choice Questionsġ. Important Questions for Class 10 Science Chapter 1 Chemical Reactions and Equations.MCQ for Class 10 Science Chapter 1 Chemical Reactions and Equations.Revision Notes for Class 10 Science Chapter 1 Chemical Reactions and Equations.NCERT Solutions for Class 10 Science Chapter 1 Chemical Reactions and Equations.Chapter 1 Chemical Reactions and Equations
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