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

Example of electrolytic cell is___________

2 / 59

Who invented first electrolytic cell?

3 / 59

In galvanic cell cathode electrode carries__________

4 / 59

Which is not a property of fine silver?

5 / 59

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

6 / 59

Oxidizing agent is a substance which___________

7 / 59

Which ionizes in small extent in water___________

8 / 59

In which cell electrical energy is converted into chemical energy?

9 / 59

The oxidation number of Group-I elements is_________

10 / 59

Oxidation involves__________

11 / 59

Formation of water from hydrogen and oxygen is________

12 / 59

The most common example of corrosion is________

13 / 59

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

14 / 59

Which medium accelerates the process of rusting?

15 / 59

Chemical formula of sodium hyposulphite is _____________

16 / 59

Which of the following is a good electrolyte?

17 / 59

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

18 / 59

Which of the following is a weak electrolyte?

19 / 59

Sodium hydroxide is manufactured in__________

20 / 59

The electrolytic cell is made up of____________

21 / 59

The oxidation number of hydrogen in metal hydrides is________

22 / 59

Which of the following is a corrosion resistant metal?

23 / 59

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

24 / 59

Which acts as anode in Down’s cell?

25 / 59

Stainless steel contains___________

26 / 59

Which of the following is a non-electrolyte?

27 / 59

Which metal has a great tendency to corrosion?

28 / 59

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

29 / 59

Which is produced as a result of Redox reaction?

30 / 59

The oxidation number of chromium in K2Cr2O7 is____________

31 / 59

  1. Chemical formula of rust is__________

32 / 59

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

33 / 59

Sodium hyposulphite dissolves____________

34 / 59

Sterling silver is an alloy of silver and________

35 / 59

The oxidation number of sulphur in H2SO4 is_______

36 / 59

The percentage of silver in sterling silver is_______

37 / 59

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

38 / 59

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

39 / 59

Cl2 gas is formed, when Cl ions are_________

40 / 59

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

41 / 59

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

42 / 59

Corrosion of iron is called____________

43 / 59

Oxidation always takes place at_______________

44 / 59

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

45 / 59

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

46 / 59

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

47 / 59

Rusting occurs on___________

48 / 59

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

49 / 59

Spontaneous chemical reactions take place in____________

50 / 59

Which of the following is NOT an electrolytic cell?

51 / 59

Which of the following is NOT an electrolyte?

52 / 59

Pure water is a ___________

53 / 59

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

54 / 59

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

55 / 59

The oxidation number of all elements in free state is_______

56 / 59

In Nelson’s cell, cathode is made up of__________

57 / 59

In HCl, oxidation number of H is_________

58 / 59

The oxidation number of oxygen is +2 in_________

59 / 59

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

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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

 

 

 

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