This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 1 Chemical Reactions And Equations – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 1 Chemical Reactions And Equations Quiz 13 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A solution of X is used for white washing walls. it reacts slowly with Y in air to form a thin layer of B on walls which gives walls a shiny finish. which of the following options correctly represents X, Y and B? A) X =slaked lime, Y = nitrogen, B=calcium oxide. B) X =Calcium Hydroxide, Y=Oxygen, B = Calcium carbonate. C) X= slaked lime, Y=Carbon oxide, B= calcium chloride. D) X= slaked lime, Y=Carbon dioxide, B=Calcium carbonate. Show Answer Correct Answer: D) X= slaked lime, Y=Carbon dioxide, B=Calcium carbonate. 2. REDOX REACTION MEANS A) OXIDATION AND REDUCTION AT THE SAME TIME. B) OXIDIZING AGENT. C) REDUCING AGENT. D) Rancidity. Show Answer Correct Answer: A) OXIDATION AND REDUCTION AT THE SAME TIME. 3. Chemical Reaction between quick lime and water is: A) Evolution of gas. B) Formation of slaked lime. C) Change in color. D) Change in temperature. Show Answer Correct Answer: D) Change in temperature. 4. True or False:Neutralization reaction is a type of Double Displacement Reaction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. Combination of phosphorus and oxygen is an example of- A) Oxidation. B) Reduction. C) Rancidity. D) None of these. Show Answer Correct Answer: A) Oxidation. 6. Which of the following does not corrode when exposed to the atmosphere- A) Fe. B) Cu. C) Au. D) Ag. Show Answer Correct Answer: C) Au. 7. Which of the following is NOT an Exothermic Reaction? A) Burning of Natural Gas. B) Respiration. C) Decomposition of Vegetable Matter. D) Formation of Ca(OH)$_{2}$. Show Answer Correct Answer: D) Formation of Ca(OH)$_{2}$. 8. When Lead nitrate is heated strongly in a dry test tube, what happens? A) Lead Nitrate evaporates. B) Heat is released. C) Brown residue is left behind. D) No change. Show Answer Correct Answer: C) Brown residue is left behind. 9. The number of atoms of each element is not conserved in any chemical reaction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 10. Oxidation is the loss of electrons from a substance. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. Potassium Chlorate is heated in presence of catalyst to produce oxygen and potassium chloride.Which of the following statement(s) is(are) correct about the reaction? A) (a) It is a decomposition reaction and endothermic in nature. B) (b) It is a combination reaction. C) It is a decomposition reaction and accompanied by release of heat. D) (d) It is a photochemical decomposition reaction and exothermic in nature. Show Answer Correct Answer: A) (a) It is a decomposition reaction and endothermic in nature. 12. Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to(i) the formation of silver by decomposition of silver chloride (ii) sublimation of silver chloride(iii) decomposition of chlorine gas from silver chloride (iv) oxidation of silver chloride A) (a) (i) only. B) (i) and (iii). C) (c) (iii) and (iii). D) (d) (iv) only. Show Answer Correct Answer: A) (a) (i) only. 13. How many Mn atoms are found in the reactants of the following equation as indicated by the coefficients?3 Cr(MnO$_{4}$)$_{6}$ + 6 Na$_{3}$N ..... > ..... A) 3. B) 4. C) 18. D) 24. Show Answer Correct Answer: C) 18. 14. Which of the following is a chemical reaction? A) Water freezes. B) Sugar dissolves in water. C) Salt and pepper are mixed in a dish. D) Iron rusts. Show Answer Correct Answer: D) Iron rusts. 15. State true or False:During a chemical reaction atoms of one element do no change to those of another element: A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 16. What does CH4 represent in the balanced chemical equation:C + 2 H2 ..... > CH4 A) Atom CH4. B) Atoms CH4. C) Molecule CH4. D) G CH4. Show Answer Correct Answer: C) Molecule CH4. 17. Reactions including both oxidation and reduction are called ..... A) Combination reaction. B) Decomposition reaction. C) Displacement reaction. D) Redox reaction. Show Answer Correct Answer: D) Redox reaction. 18. Which of the following is(are) an endothermic process(es)? (i) Dilution of sulphuric acid(ii) Sublimation of dry ice (iii) Condensation of water vapours (iv) Evaporation of water A) (i) and (iii). B) (ii) only. C) (iii) only. D) (ii) and (iv). Show Answer Correct Answer: D) (ii) and (iv). 19. State as always true, sometimes true, or never true.In a decomposition reaction, there is a single reactant. A) Always true. B) Sometimes true. C) Never true. D) None of the above. Show Answer Correct Answer: A) Always true. 20. Select the correct balanced equation for this single replacement reaction in aqueous solution. Fe(s) + Pb(NO$_{3}$)$_{2}$(aq) ..... > A) 2Fe(s) + Pb(NO$_{3}$)$_{2}$(aq) > Pb(s) + 2FeNO$_{3}$(aq). B) Fe(s) + Pb(NO$_{3}$)$_{2}$(aq) > Fe(s) + Pb(NO$_{3}$)$_{2}$(aq). C) Fe(s) + Pb(NO$_{3}$)$_{2}$(aq) > Pb(s) + Fe(NO$_{3}$)$_{2}$(aq). D) No reaction. Show Answer Correct Answer: C) Fe(s) + Pb(NO$_{3}$)$_{2}$(aq) > Pb(s) + Fe(NO$_{3}$)$_{2}$(aq). 21. Which among the following is(are) double displacement reaction(s)?(i) Pb + CuCl2 $\rightarrow$ PbCl2 + Cu (ii) Na2SO4 + BaCl2 $\rightarrow$ BaSO4 + 2NaCl (iii) C + O2 $\rightarrow$ CO2 (iv) CH4 + 2O2 $\rightarrow$ CO2 + 2H2O A) (i) and (iv). B) (ii) only. C) (i) and (ii). D) (iii) and (iv). Show Answer Correct Answer: B) (ii) only. 22. Pb + CuCl2 $\rightarrow$ PbCl2 + CuThe above reaction is an example of: A) Combination. B) Double displacement. C) Decomposition. D) Displacement. Show Answer Correct Answer: D) Displacement. 23. When Mg ribbon is burnt in air, What is the colour of the ash formed? A) Colourless. B) Transparent. C) White. D) Yellow. Show Answer Correct Answer: C) White. 24. Anything that has mass and takes up space is considered A) Matter. B) Energy. C) Chemistry. D) Endothermic. Show Answer Correct Answer: A) Matter. 25. In the double displacement reaction between aqueous pottasium Iodine and aqueous lead nitrate, a yellow precipitate of lead Iodine is formed. While performing the activity if Lead nitrate isn't available which of the following can be used as a substitute of lead nitrate? A) Pottasium Nitrate. B) Lead Iodine. C) Acetic acid. D) Lead acetate. Show Answer Correct Answer: D) Lead acetate. ← PreviousNext →Related QuizzesClass 10 Science Chapter 1 Chemical Reactions And Equations Quiz 1Class 10 Science Chapter 1 Chemical Reactions And Equations Quiz 2Class 10 Science Chapter 1 Chemical Reactions And Equations Quiz 3Class 10 Science Chapter 1 Chemical Reactions And Equations Quiz 4Class 10 Science Chapter 1 Chemical Reactions And Equations Quiz 5Class 10 Science Chapter 1 Chemical Reactions And Equations Quiz 6Class 10 Science Chapter 1 Chemical Reactions And Equations Quiz 7Class 10 Science Chapter 1 Chemical Reactions And Equations Quiz 8Class 10 Science Chapter 1 Chemical Reactions And Equations Quiz 9Class 10 Science Chapter 1 Chemical Reactions And Equations Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books