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

Identify which pair has polar covalent bonds________

2 / 89

Nitrogen molecule contain_________

3 / 89

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

4 / 89

The density of water at 0°C  is_________

5 / 89

How many covalent bonds does C2H2 molecule have?

6 / 89

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

7 / 89

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

8 / 89

Mode of reaction depends upon its_________

9 / 89

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

10 / 89

Noble gases are non-reactive because they do not__________

11 / 89

Which of the following is a building block of matter?

12 / 89

During the formation of ionic bond, heat____________

13 / 89

Covalent bond involves the _______

14 / 89

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

15 / 89

Epoxy adhesives can be made________

16 / 89

Transfer of electrons between elements result in________

17 / 89

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

18 / 89

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

19 / 89

Epoxy adhesives are________

20 / 89

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

21 / 89

Dative covalent bond is also known as________

22 / 89

The electropositive elements have tendency to _________

23 / 89

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

24 / 89

The compounds formed by oppositely charges are known as _________

25 / 89

The melting point of NaCl is___________

26 / 89

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

27 / 89

Epoxy adhesives are also known as_________

28 / 89

The electronegative elements have_________

29 / 89

Which of the following is an electron deficient molecule?

30 / 89

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

31 / 89

Non-polar compounds are insoluble in_________

32 / 89

All the noble gases have their valence electrons_________

33 / 89

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

34 / 89

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

35 / 89

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

36 / 89

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

37 / 89

Octet rule is __________

38 / 89

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

39 / 89

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

40 / 89

Ice floats on water because____________

41 / 89

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

42 / 89

Which type of attractive forces are present in ionic compounds?

43 / 89

The force of attractive between water molecules is__________

44 / 89

A covalent bond formed by two similar atoms is known as________

45 / 89

Which of the following is an example of covalent compound?

46 / 89

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

47 / 89

The electronic configuration of sodium atom is ____________

48 / 89

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

49 / 89

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

50 / 89

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

51 / 89

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

52 / 89

Which type of bond is present between NH3 and BF3?

53 / 89

The position of an atom in the periodic table indicates its__________

54 / 89

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

55 / 89

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

56 / 89

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

57 / 89

A molecule is formed, when energy of a system___________

58 / 89

Which molecule contains a single covalent bond?

59 / 89

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

60 / 89

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

61 / 89

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

62 / 89

Atoms react with each other because_________

63 / 89

The electro-negative value of fluorine is____________

64 / 89

The density of ice at 0°C is __________

65 / 89

Which of the following do not show ions in water?

66 / 89

The boiling point of water is ____________

67 / 89

Metals have the tendency to lose electrons due to ________

68 / 89

At room temperature, higher molecular mass covalent compounds are ________

69 / 89

Covalent bond is most commonly found between the elements of group_________

70 / 89

Hydrogen and helium follow ________

71 / 89

Identify the compound which is not soluble in water__________

72 / 89

The difference between electronegativities of hydrogen and chlorine________

73 / 89

The nature of a chemical bond can be predicted by using__________

74 / 89

Which of the following is the weakest bond amongst them?

75 / 89

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

76 / 89

Which sign indicates partial positive and partial negative charge?

77 / 89

Attaining two electrons in the valence shell is called__________

78 / 89

Intermolecular forces are collectively known as__________

79 / 89

The boiling point of alcohol is ____________

80 / 89

Which type of adhesives is less expensive to produce?

81 / 89

Metals usually have ______________

82 / 89

Atom achieve stability by attaining electronic configuration of _________

83 / 89

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

84 / 89

Ionic compounds have________

85 / 89

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

86 / 89

Hydrogen bonding is always found in____________

87 / 89

Triple covalent bond involves how many numbers of electrons?

88 / 89

The boiling point of NaCl is __________

89 / 89

A bond pair in covalent molecules usually has_________

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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