Class 9 Chemistry notes chapter 8

Chemistry Notes for Class-9 Chapter-8

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Chemical Reactivity

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Chemistry Ch#08, 9th Class

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1 / 44

Boiling point of Magnesium is________

2 / 44

Group-17 elements are called___________

3 / 44

Flame color of Sodium is_________

4 / 44

Sodium is extremely reactive metal, but it does not react with______

5 / 44

Boiling point of Calcium is________

6 / 44

Metals are the elements which__________

7 / 44

Which compounds are widely used in photography films and dental preparations?

8 / 44

The flame Color of Calcium is________

9 / 44

Nonmetals form________

10 / 44

Which of the following is less malleable?

11 / 44

Density of Calcium is___________

  • 0.98 gcm-3
  • 1.74 gcm-3
  • 1.55 gcm-3
  • 1.60 gcm-3

Which Option is Correct ?

12 / 44

All metals bear________

13 / 44

Which Metal belongs to Group-11?

14 / 44

Which one is a least reactive metal?

15 / 44

Metals can form ions carrying charges____________

16 / 44

Which one of the following is brittle?

17 / 44

Which group of elements has low ionization energies?

18 / 44

Boiling point of Sodium is___________

19 / 44

Melting point of Sodium is__________

20 / 44

The melting and boiling points of nonmetals are_________

21 / 44

Non-Metals are ____________ conductor of heat and electricity.

22 / 44

Which one the following is the lightest and floats on water?

23 / 44

Density of sodium metal is_______

  • 0.98 gcm-3
  • 1.74 gcm-3
  • 1.55 gcm-3
  • 1.60 gcm-3

Which Option is Correct ?

24 / 44

Which one of the following will not react with dilute HCI?

25 / 44

Non-metals are generally soft, but which one of the following is extremely hard?

26 / 44

Metals oxides are________

27 / 44

The Elements in which d-orbital is in the process of filling constitute a group of metals called________

28 / 44

Sodium metal has electrons____________

29 / 44

Melting point of Calcium is___________

30 / 44

Metals are conductor of heat and electricity________

31 / 44

Which one is very reactive metal?

32 / 44

Density of magnesium is______

  • 0.98 gcm-3
  • 1.74 gcm-3
  • 1.55 gcm-3
  • 1.60 gcm-3

Which Option is Correct ?

33 / 44

Which one of the following non-metal is lustrous?

34 / 44

Platinum alloyed with which metal are used as catalyst in automobiles as catalytic convertor?

35 / 44

Which one of the following metals burn with a brick red flame when heated in air?

36 / 44

Which element has high electro-negativity value?

37 / 44

Which metal exists in liquid form at room temperature?

38 / 44

The flame color of Magnesium is________

39 / 44

Metals possess________

40 / 44

Metals lose their electrons easily because________

41 / 44

Nonmetallic oxides are________

42 / 44

Which of the following is a yellow metal?

43 / 44

Pure alkali metals can be cut simply by knife but iron cannot because of alkali metals have_____

44 / 44

22 Carat Gold means that 22-part pure gold is alloyed with 2 parts of__________

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Chemistry Notes, Problems for Class 9th

Chemistry, a new subject for 9th Class, having a lot of concepts all 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, we 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