Chemistry class-9 chapter-4 short questions

Chemistry Notes for Class-9 Chapter-4

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Chemistry Notes for Class-9 Chapter-4

Structure of Molecule 

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Here are important MCQs for Chemistry Notes for Class 9, chapter 4

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Chemistry Ch#04, 9th Class

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1 / 89

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

2 / 89

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

3 / 89

Nitrogen molecule contain_________

4 / 89

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

5 / 89

The melting point of NaCl is___________

6 / 89

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

7 / 89

The boiling point of alcohol is ____________

8 / 89

The density of water at 0°C  is_________

9 / 89

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

10 / 89

Metals have the tendency to lose electrons due to ________

11 / 89

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

12 / 89

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

13 / 89

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

14 / 89

Mode of reaction depends upon its_________

15 / 89

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

16 / 89

Triple covalent bond involves how many numbers of electrons?

17 / 89

The electro-negative value of fluorine is____________

18 / 89

The nature of a chemical bond can be predicted by using__________

19 / 89

Which of the following is the weakest bond amongst them?

20 / 89

Hydrogen and helium follow ________

21 / 89

The force of attractive between water molecules is__________

22 / 89

Which type of attractive forces are present in ionic compounds?

23 / 89

Which of the following is an electron deficient molecule?

24 / 89

Epoxy adhesives are also known as_________

25 / 89

A molecule is formed, when energy of a system___________

26 / 89

The position of an atom in the periodic table indicates its__________

27 / 89

Dative covalent bond is also known as________

28 / 89

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

29 / 89

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

30 / 89

Which sign indicates partial positive and partial negative charge?

31 / 89

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

32 / 89

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

33 / 89

Covalent bond is most commonly found between the elements of group_________

34 / 89

Octet rule is __________

35 / 89

Which molecule contains a single covalent bond?

36 / 89

The electropositive elements have tendency to _________

37 / 89

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

38 / 89

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

39 / 89

All the noble gases have their valence electrons_________

40 / 89

Epoxy adhesives can be made________

41 / 89

Atoms react with each other because_________

42 / 89

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

43 / 89

Atom achieve stability by attaining electronic configuration of _________

44 / 89

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

45 / 89

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

46 / 89

The electronegative elements have_________

47 / 89

How many covalent bonds does C2H2 molecule have?

48 / 89

Identify which pair has polar covalent bonds________

49 / 89

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

50 / 89

The boiling point of NaCl is __________

51 / 89

Epoxy adhesives are________

52 / 89

Identify the compound which is not soluble in water__________

53 / 89

The compounds formed by oppositely charges are known as _________

54 / 89

A bond pair in covalent molecules usually has_________

55 / 89

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

56 / 89

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

57 / 89

Intermolecular forces are collectively known as__________

58 / 89

Which of the following is an example of covalent compound?

59 / 89

Metals usually have ______________

60 / 89

The density of ice at 0°C is __________

61 / 89

Ice floats on water because____________

62 / 89

Which of the following do not show ions in water?

63 / 89

Ionic compounds have________

64 / 89

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

65 / 89

Attaining two electrons in the valence shell is called__________

66 / 89

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

67 / 89

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

68 / 89

Non-polar compounds are insoluble in_________

69 / 89

During the formation of ionic bond, heat____________

70 / 89

Covalent bond involves the _______

71 / 89

The difference between electronegativities of hydrogen and chlorine________

72 / 89

At room temperature, higher molecular mass covalent compounds are ________

73 / 89

Which type of bond is present between NH3 and BF3?

74 / 89

Which type of adhesives is less expensive to produce?

75 / 89

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

76 / 89

Transfer of electrons between elements result in________

77 / 89

A covalent bond formed by two similar atoms is known as________

78 / 89

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

79 / 89

The boiling point of water is ____________

80 / 89

The electronic configuration of sodium atom is ____________

81 / 89

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

82 / 89

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

83 / 89

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

84 / 89

Hydrogen bonding is always found in____________

85 / 89

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

86 / 89

Which of the following is a building block of matter?

87 / 89

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

88 / 89

Noble gases are non-reactive because they do not__________

89 / 89

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

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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.

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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