Electrochemistry

Chemistry Notes for Class 9 Chapter 7

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Electrochemistry:

If you are looking for Chemistry Notes for Class 9 Chapter-7, then you are on right place, and have found the your required result. on this post you can find the all type Solution for chemistry class 9 problems. so read this post and take benefits for your studies and share with your Friends.

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Chemistry Ch#07, 9th Class

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1 / 59

A region on iron surface when rusting takes place is known as____________

2 / 59

In galvanic cell cathode electrode carries__________

3 / 59

The oxidation number of chromium in K2Cr2O7 is____________

4 / 59

Corrosion of iron is called____________

5 / 59

Which medium accelerates the process of rusting?

6 / 59

Sterling silver is an alloy of silver and________

7 / 59

Stainless steel contains___________

8 / 59

Chemical formula of sodium hyposulphite is _____________

9 / 59

During the formation of water from hydrogen and oxygen, which of the: following does not occur?

10 / 59

Which of the following is a weak electrolyte?

11 / 59

Rusting occurs on___________

12 / 59

Pure water is a ___________

13 / 59

The substances which do not ionize in solution and do not allow to pass current through them are called________

14 / 59

Which cell is used in the manufacturing of sodium metal from fused NaCl?

15 / 59

The oxidation number of all elements in free state is_______

16 / 59

Formation of water from hydrogen and oxygen is________

17 / 59

Which of the following is a common example of silver plating?

18 / 59

Which of the following is a good electrolyte?

19 / 59

Oxidation involves__________

20 / 59

In which cell electrical energy is converted into chemical energy?

21 / 59

In the Redox reaction between Zn and HCI, the oxidizing agent is_______

22 / 59

  1. Chemical formula of rust is__________

23 / 59

Sodium hyposulphite dissolves____________

24 / 59

Which acts as anode in Down’s cell?

25 / 59

Which gas is evolved during the electrolysis of fused sodium chloride?

26 / 59

The branch of chemistry which deals with the relationship between electricity and chemical reactions.

27 / 59

The percentage of any metal can make up the non-silver portion of a sterling is_______

28 / 59

Oxidation always takes place at_______________

29 / 59

The oxidation number of hydrogen in metal hydrides is________

30 / 59

The percentage of silver in sterling silver is_______

31 / 59

In early nineteenth century photographers produce crude images using papers covered with_____

32 / 59

During electrolysis of sodium chloride in aqueous state, which gas is evolved from the cathode electrode?

33 / 59

Which is not a property of fine silver?

34 / 59

The most common example of corrosion is________

35 / 59

Which of the following is NOT an electrolyte?

36 / 59

In Nelson’s cell, cathode is made up of__________

37 / 59

Spontaneous chemical reactions take place in____________

38 / 59

Which ion is not formed during electrolysis of aqueous sodium chloride?

39 / 59

In HCl, oxidation number of H is_________

40 / 59

Which of the following is NOT an electrolytic cell?

41 / 59

Which of the following is a non-electrolyte?

42 / 59

A process of coating a thin layer of Zn on iron is called___________

43 / 59

In order to give longer life, the containers of iron are coated by_________

44 / 59

The oxidation number of sulphur in H2SO4 is_______

45 / 59

Which of the following is a corrosion resistant metal?

46 / 59

The oxidation number of oxygen is +2 in_________

47 / 59

The electrolytic cell is made up of____________

48 / 59

Who invented first electrolytic cell?

49 / 59

In neutral molecules, the algebraic sum of the oxidation numbers of all the elements is______

50 / 59

Which ionizes in small extent in water___________

51 / 59

Cl2 gas is formed, when Cl ions are_________

52 / 59

Chemical reaction in which the oxidation state of one or more substances changes are called____

53 / 59

Example of electrolytic cell is___________

54 / 59

Sodium hydroxide is manufactured in__________

55 / 59

Which metal has a great tendency to corrosion?

56 / 59

Nelson’s cell is used to prepare caustic soda along with gases. Which of the following gas is produced at cathode?

57 / 59

The oxidation number of Group-I elements is_________

58 / 59

Oxidizing agent is a substance which___________

59 / 59

Which is produced as a result of Redox reaction?

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Chemistry Notes, Problems for Class 9th

Chemistry, a new subject for 9th Class, having a lot of concepts, starting from a single definition of the smallest particle of our universe which is called ‘atom’. In the 8th grade usually, we have to study only one book of science that combines chemistry, physics, and biology. But as, we got into 9th class and with every passing day things starts to get more complex now. similarly we got three books instead of just one science book.

And, if you any student of 9th Class feeling difficult to understand the concept of chemistry. Then, these chemistry notes for class 9 are enough. by Understanding chemistry Notes for 9th class means remembering a lot of concepts. Consider that particular subject important in which you want to study for your whole life. And, read more than just the textbook about that particular subject. If you think you want to study chemistry for your whole life that’s great, our country also need chemists.

Chemistry class 9 pdf

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Chapter wise PDF Notes / Problems / Solution of Chemistry 9th Class

                     Chapter-01 – Fundamentals of Chemistry

                     Chapter-02 – Structure of Atoms 

                     Chapter-03 – Periodic Table and Periodicity of Properties

                     Chapter-04 – Structure of Molecules 

                     Chapter-05 – Physical States of Matter 

                     Chapter-06 – Solutions 

                     Chapter-07 – Electrochemistry 

                     Chapter-08 – Chemical Reactivity 

                     Pairing Scheme for 2021 – Chemistry 9th Class