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

The electronegative elements have_________

2 / 89

Mode of reaction depends upon its_________

3 / 89

Which type of bond is present between NH3 and BF3?

4 / 89

A bond pair in covalent molecules usually has_________

5 / 89

Covalent bond involves the _______

6 / 89

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

7 / 89

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

8 / 89

The boiling point of NaCl is __________

9 / 89

The difference between electronegativities of hydrogen and chlorine________

10 / 89

The boiling point of water is ____________

11 / 89

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

12 / 89

The density of water at 0°C  is_________

13 / 89

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

14 / 89

Which type of attractive forces are present in ionic compounds?

15 / 89

Which of the following is a building block of matter?

16 / 89

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

17 / 89

Which of the following is the weakest bond amongst them?

18 / 89

Atom achieve stability by attaining electronic configuration of _________

19 / 89

The position of an atom in the periodic table indicates its__________

20 / 89

Identify which pair has polar covalent bonds________

21 / 89

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

22 / 89

Which of the following is an electron deficient molecule?

23 / 89

Which of the following do not show ions in water?

24 / 89

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

25 / 89

At room temperature, higher molecular mass covalent compounds are ________

26 / 89

Hydrogen bonding is always found in____________

27 / 89

Which of the following is an example of covalent compound?

28 / 89

The density of ice at 0°C is __________

29 / 89

Atoms react with each other because_________

30 / 89

Non-polar compounds are insoluble in_________

31 / 89

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

32 / 89

Covalent bond is most commonly found between the elements of group_________

33 / 89

The force of attractive between water molecules is__________

34 / 89

Epoxy adhesives are also known as_________

35 / 89

Hydrogen and helium follow ________

36 / 89

Noble gases are non-reactive because they do not__________

37 / 89

The nature of a chemical bond can be predicted by using__________

38 / 89

Ice floats on water because____________

39 / 89

During the formation of ionic bond, heat____________

40 / 89

A molecule is formed, when energy of a system___________

41 / 89

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

42 / 89

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

43 / 89

Intermolecular forces are collectively known as__________

44 / 89

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

45 / 89

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

46 / 89

The boiling point of alcohol is ____________

47 / 89

Octet rule is __________

48 / 89

Transfer of electrons between elements result in________

49 / 89

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

50 / 89

Attaining two electrons in the valence shell is called__________

51 / 89

Which sign indicates partial positive and partial negative charge?

52 / 89

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

53 / 89

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

54 / 89

The electropositive elements have tendency to _________

55 / 89

The electronic configuration of sodium atom is ____________

56 / 89

Which molecule contains a single covalent bond?

57 / 89

A covalent bond formed by two similar atoms is known as________

58 / 89

Nitrogen molecule contain_________

59 / 89

How many covalent bonds does C2H2 molecule have?

60 / 89

Metals usually have ______________

61 / 89

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

62 / 89

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

63 / 89

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

64 / 89

Which type of adhesives is less expensive to produce?

65 / 89

Metals have the tendency to lose electrons due to ________

66 / 89

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

67 / 89

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

68 / 89

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

69 / 89

Dative covalent bond is also known as________

70 / 89

Identify the compound which is not soluble in water__________

71 / 89

All the noble gases have their valence electrons_________

72 / 89

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

73 / 89

Epoxy adhesives can be made________

74 / 89

Ionic compounds have________

75 / 89

The electro-negative value of fluorine is____________

76 / 89

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

77 / 89

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

78 / 89

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

79 / 89

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

80 / 89

Epoxy adhesives are________

81 / 89

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

82 / 89

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

83 / 89

The melting point of NaCl is___________

84 / 89

Triple covalent bond involves how many numbers of electrons?

85 / 89

The compounds formed by oppositely charges are known as _________

86 / 89

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

87 / 89

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

88 / 89

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

89 / 89

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

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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