CBSE Class 10 Science Chapter 1 Chemical Reactions and Equations Multiple Choice Questions with Answers. MCQ Class 10 Science Chemical Reactions and Equations with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 10 Science Chemical Reactions and Equations MCQs with Answers to know their preparation level.
Multiple Choice Questions - Set - 6
Question 1:
Which of the following does show an oxidation reaction?
(a) Gain of oxygen
(b) Loss of oxygen
(c) Gain of hydrogen
(d) None of the above
Correct Answer – (A)
Question 2 :
What happens when lead nitrate reacts with potassium iodide?
(a) They will not react
(b) Large amount of hydrogen release
(c) Yellow ppt of lead iodide and potassium nitrate will be produced
(d) Evolution of gas will occur
Correct Answer – (C)
Question 3 :
A student adds lead and silver to two different test tubes containing an equal amount of copper sulphate solution. The student observes that the color of the solution in the test tube with lead changes. What explains the change in the colour of the solution?
(a) A displacement reaction takes place as lead replaces copper from the solution.
(b) A combination reaction takes place as lead combines with sulphate in the solution.
(c) decomposition reaction takes place as copper dissociates from sulphate in the solution.
(d) A double displacement reaction takes place as copper dissociates from sulphate and lead combines with sulphate in the solution.
Correct Answer – (A)
Question 4 :
The chemical formula of magnesium oxide is?
(a) MgO2
(b) Mg2O
(c) MgO
(d) Mg(OH)2
Correct Answer – (C)
Question 5 :
One of the following processes does not involve a chemical reaction, that is:
(a) Melting of candle wax when heated
(b) Burning of candle wax when heated
(c) Digestion of food in your stomach
(d) Ripening of banana
Correct Answer – (A)
Question 6 :
The chemical reaction between potassium chloride and silver nitrate is given by the chemical equation.
AgNO3 + KCl → AgCl + KNO3
What can be inferred from the chemical equation?
(a) silver nitrate and potassium undergo a decomposition reaction to form silver chloride and potassium nitrate
(b) silver nitrate and potassium undergo a displacement reaction to form silver chloride and potassium nitrate
(c) silver nitrate and potassium undergo a combination reaction to form silver chloride and potassium nitrate
(d) silver nitrate and potassium undergo double displacement reaction to form silver chloride and potassium nitrate
Correct Answer – (D)
Question 7 :
Which of the reactions is used in black and white photography?
(a) Combination Reaction
(b) Decomposition Reaction
(c) Displacement reaction
(d) Oxidation reaction
Correct Answer – (B)
Question 8 :
From the following which one is the example of chemical reaction
(a) Grapes get fermented
(b) Breakdown of food
(c) Formation of curd
(d) All of the above
Correct Answer – (D)
Question 9 :
A student writes a chemical equation of the reaction between carbon monoxide and hydrogen.
CO2 + 2H2 → CH3OH
How can the reaction be classified?
(a) The reaction is an example of a combination reaction as a compound separates into two compounds.
(b) The reaction is an example of a decomposition reaction as a compound dissociates into two compounds.
(c) The reaction is an example of a combination reaction as two compounds react to form a single compound.
(d) The reaction is an example of a decomposition reaction as two compounds react to form a single compound.
Correct Answer – (C)
Question 10 :
A researcher adds barium hydroxide to hydrochloric acid to form a white-colored barium
chloride. Which option gives the balanced chemical equation of the reaction?
(a) HCl + Ba(OH)2 → BaCl2 + 2HOH
(b) 2HCl + Ba(OH)2 → BaCl2 + 2HOH
(c) 2HCl + Ba(OH)2 → BaH2 + 2HCl + O2
(d) HCl + 2Ba(OH) → 2BaCl2 + 2HOH + O2
Correct Answer – (B)
- NCERT Solutions Class 10 Science Chapter 1 : Chemical Reactions and Equation
- NCERT Solutions Class 10 Science Chapter 2 : Acids, Bases & Salts
- NCERT Solutions Class 10 Science Chapter 3 : Metals and Non-metals
- NCERT Solutions Class 10 Science Chapter 4 : Carbon And Its Compounds
- NCERT Solutions Class 10 Science Chapter 5 : Periodic Classification of Elements
- NCERT Solutions Class 10 Science Chapter 6 : Life Precesses
- NCERT Solutions Class 10 Science Textbook Download
