Chemical reactions and equations Class 10 MCQ Online Test

Chemical reactions and equations Class 10 MCQ Online Test

Which of the following reaction is correct?

 
 
 
 

What type of chemical reactions take place when electricity is passed through water?

 
 
 
 

Pb + CuCl2 → PbCl2 + Cu

The above reaction is an example of:

 
 
 
 

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

 
 
 
 

Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is:

 
 
 
 

In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate?

 
 
 
 

Oxidation is a process which involves

 
 
 
 

The condition produced by aerial oxidation of fats and oils in foods marked by unpleasant smell and taste is called:

 
 
 
 

Which of the following do you think is a correct statement?

 
 
 
 

SnCl2 + 2FeCl2 → SnCl4 + 2FeCl2 is an example of __________________ reaction.

 
 
 
 

Formation of zinc sulphide is an example of ___________

 
 
 
 

Oxidation is the same as __________

 
 
 
 

Reduction involves in __________ oxidation number.

 
 
 
 

Removal of oxygen from a compound is an example of ________

 
 
 
 

In the reaction of formation of magnesium oxide magnesium undergoes ________

 
 
 
 

What is Corrosion?

 
 
 
 

The chemical formula of rust is ______

 
 
 
 

Which of the following materials will undergo Corrosion?

 
 
 
 

Corrosion of material by furnace gases is classified as _____

 
 
 
 

Which of the following is an example of wet corrosion?

 
 
 
 

Class 10 Science Online Test (Chapter-wise)

Chapter 1: Chemical reactions and equationsOnline TestMCQs and Answers
Chapter 2: Acids, bases and saltOnline TestMCQs and Answers
Chapter 3: Metals and Non-metalsOnline TestMCQs and Answers
Chapter 4: Carbon and Its CompoundsOnline TestMCQs and Answers
Chapter 5: Periodic Classification Of ElementsOnline TestMCQs and Answers
Chapter 6: Life ProcessesOnline TestMCQs and Answers
Chapter 7: Control and CoordinationOnline TestMCQs and Answers
Chapter 8: How do Organisms Reproduce?Online TestMCQs and Answers
Chapter 9: Heredity and EvolutionOnline TestMCQs and Answers
Chapter 10: Light Reflection and RefractionOnline TestMCQs and Answers
Chapter 11: The Human Eye and Colourful WorldOnline TestMCQs and Answers
Chapter 12: ElectricityOnline TestMCQs and Answers
Chapter 13: Magnetic Effects of Electric CurrentOnline TestMCQs and Answers
Chapter 14: Sources of EnergyOnline TestMCQs and Answers
Chapter 15: Our EnvironmentOnline TestMCQs and Answers
Chapter 16: Sustainable Management of Natural ResourcesOnline TestMCQs and Answers

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