Chemistry Notes for Class-9 Chapter-4

Structure of Molecule 

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Chemistry Ch#04, 9th Class

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1 / 89

The position of an atom in the periodic table indicates its__________

2 / 89

Epoxy adhesives can be made________

3 / 89

Metals have the tendency to lose electrons due to ________

4 / 89

Which type of bond is present between NH3 and BF3?

5 / 89

The boiling point of NaCl is __________

6 / 89

Identify which pair has polar covalent bonds________

7 / 89

The boiling point of alcohol is ____________

8 / 89

The electro-negativity value of atoms is given by which scale?

9 / 89

Hydrogen and helium follow ________

10 / 89

Nitrogen molecule contain_________

11 / 89

A covalent bond formed by two similar atoms is known as________

12 / 89

Epoxy adhesives are________

13 / 89

If the difference of electro-negativities between two elements is more than 1.7, the bond will be__________

14 / 89

Which group of the periodic table have the tendency to gain electrons _______

15 / 89

Transfer of electrons between elements result in________

16 / 89

The formation of a chemical bond is a result of dominant net______

17 / 89

How many electrons are there in the valence shell of sodium atom?

18 / 89

Which of the following is the weakest force among the atoms?

19 / 89

Which of the following is a building block of matter?

20 / 89

How many covalent bonds does C2H2 molecule have?

21 / 89

How many electrons are involved in the formation single covalent bond?

22 / 89

Atom achieve stability by attaining electronic configuration of _________

23 / 89

At room temperature, higher molecular mass covalent compounds are ________

24 / 89

The electronegative elements have_________

25 / 89

A bond pair in covalent molecules usually has_________

26 / 89

A molecule is formed, when energy of a system___________

27 / 89

The compounds formed by oppositely charges are known as _________

28 / 89

The density of ice at 0°C is __________

29 / 89

How many lone pairs are present on nitrogen in ammonia molecule?

30 / 89

Which of the following is an electron deficient molecule?

31 / 89

The density of water at 0°C  is_________

32 / 89

Ionic compounds have________

33 / 89

The forces responsible for binding the atoms together in a molecule are called_______

34 / 89

Covalent bond involves the _______

35 / 89

Which molecule contains a single covalent bond?

36 / 89

Ice floats on water because____________

37 / 89

A bond formed due to complete transfer of electrons from one atom to another is called_____

38 / 89

Which of the following is an example of polar covalent compound?

39 / 89

A covalent bond formed by the mutual sharing of two pairs of electrons between bonded atom is called__________

40 / 89

Every atom has a natural tendency to achieve electrons in its valence shell________

41 / 89

Metals usually have ______________

42 / 89

Which type of adhesives is less expensive to produce?

43 / 89

The electropositive elements have tendency to _________

44 / 89

Intermolecular forces are collectively known as__________

45 / 89

How many valence shell electrons are there in group-01 elements?

46 / 89

The electro-negative value of fluorine is____________

47 / 89

Atoms react with each other because_________

48 / 89

In metals, the hold of nucleus over the valence shell electrons is weak due to _______

49 / 89

Hydrogen bonding is always found in____________

50 / 89

Covalent bond is most commonly found between the elements of group_________

51 / 89

Non-polar compounds are insoluble in_________

52 / 89

A bond formed by the mutual sharing of an electron pair is called________

53 / 89

The force of attractive between water molecules is__________

54 / 89

When an electro-negative element combines with electro-positive element the type of bonding is_______

55 / 89

Which of the following is the weakest bond amongst them?

56 / 89

If the difference of electronegativities between two elements is less than 1.7, the bond will be______

57 / 89

Which pair of the molecules has same type of covalent bonds?

58 / 89

Which of the following is an example of covalent compound?

59 / 89

The mobile electrons are responsible for holding the atoms of metals together, forming a ____

60 / 89

The valence electrons, which are involved in chemical bonding, are termed as_________

61 / 89

Epoxy adhesives are also known as_________

62 / 89

Which sign indicates partial positive and partial negative charge?

63 / 89

All the noble gases have their valence electrons_________

64 / 89

Water has high boiling points as compared to alcohol due to _______

65 / 89

Identify the compound which is not soluble in water__________

66 / 89

The electronic configuration of sodium atom is ____________

67 / 89

An atom having six electrons in its valence shell will achieve noble gas electronic configuration by_____________

68 / 89

Mode of reaction depends upon its_________

69 / 89

Which type of attractive forces are present in ionic compounds?

70 / 89

Octet rule is __________

71 / 89

Attaining two electrons in the valence shell is called__________

72 / 89

The difference between electronegativities of hydrogen and chlorine________

73 / 89

A bond formed between two non-metals is expected to be_________

74 / 89

How many valency shell electrons are there in Na+ ion?

75 / 89

During the formation of ionic bond, heat____________

76 / 89

The formation of ionic bond between two ions is due to ________

77 / 89

The melting point of NaCl is___________

78 / 89

The electrons that pair up to form a chemical bond are called__________

79 / 89

Considering the electronic configuration of atoms which atom with the given atomic number will be the most stable one?

80 / 89

Which force becomes operative, when two atoms come closer to each other?

81 / 89

Malleability is the property by virtue of which a metal can be drawn into________

82 / 89

The nature of a chemical bond can be predicted by using__________

83 / 89

Noble gases are non-reactive because they do not__________

84 / 89

The boiling point of water is ____________

85 / 89

Which of the following do not show ions in water?

86 / 89

Metals are good conductors of heat and electricity in solid and liquid state due to________

87 / 89

Dative covalent bond is also known as________

88 / 89

The energy required to break the intermolecular forces between one mole of liquid hydrogen chloride molecule to convert it into gas is___________

89 / 89

Triple covalent bond involves how many numbers of electrons?

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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. Chemistry Notes for Class-9 Chapter-4.

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 Notes for Class-9 Chapter-4.

Chemistry class 9 pdf / Chemistry Notes for Class-9 Chapter-4

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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




One thought on “Chemistry Notes for Class-9 Chapter-4”
  1. uchino shit suji says:

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