Class 9 Chemistry Chapter 4 Structure of Molecules MCQs Notes 2024

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Class 9 Chemistry Chapter 4 MCQs Notes

Post TopicSolved MCQs
Book CodeChemistry
Class9th Class
Chapter/FullChapter 4
BoardPunjab Board

Class 9 Chemistry Chapter 4 Structure of Molecules MCQs

1: Atoms react with each other because:

(a) they are attracted to each other.
(b) they are short of electrons
(c) they want to attain stability
(d) they want to disperse

2: An atom having six electrons in its valence shell will achieve noble gas electronic configuration by:

(a) gaining one electron
(b) losing all electrons
(c) gaining two electrons
(d) losing two electrons

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

(a) 6
(b) 8
(c) 10
(d) 12

4: Octet rule is:

(a) description of eight electrons
(b) picture of the electronic configuration
(c) the pattern of the electronic configuration
(d) attaining of eight electrons

5: Transfer of electrons between atoms results in:

(a) metallic bonding
(b) ionic bonding
(c) covalent bonding
(d) coordinate covalent bonding

6: When an electronegative element combines with an electropositive element the type of bonding is:

(a) covalent
(b) ionic
(c) polar covalent
(d) coordinate covalent

7: A bond formed between two non-metals is expected to be:

(a) covalent
(b) ionic
(c) coordinate covalent
(d) metallic

8: A bond pair in covalent molecules usually has:

(a) one electron
(b) two electrons
(c) three electrons
(d) four electrons

9: Which of the following compounds is not directional in its bonding?

(a) CH
(b) Kbr
(c) CO
(d). H O

10: Ice floats on water because:

(a) ice is denser than water
(b) ice is crystalline in nature
(c) water is denser than ice
(d) water molecules move randomly

11: A covalent bond involves the

(a) donation of electrons
(b) acceptance of electrons
(c) sharing of electrons
(d) repulsion of electrons

12: How many covalent bonds does the C H molecule have?

(a) two
(b) three
(c) four
(d) five

13: A triple covalent bond involves how many electrons?

(a) eight
(b) six
(c) four
(d) only three

14: Which pair of molecules have the same type of covalent bonds?

(a) O2 and HC1
(b) O2 and N2
(c) O2 and C2H2
(d) O2 and C2H2

15: Identify the compound which is not soluble in water.

(a) C6H6
(b) NaCl
(c) KBr
(d) MgCl2

16: Which one of the following is an electron-deficient molecule?

(a) NH3
(b) BF3
(c) N2
(d) O2

17: Identify which pair has polar covalent bonds.

(a) O2 and Cl2
(b) H2O and N2
(c) H2O and H2
(d) H2O and Hc1

18: Which one of the following is the weakest force among the atoms?

(a) ionic force
(b) metallic force
(c) intermolecular force
(d) covalent force

Chemistry Chapter 4 MCQs PDF Download

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Chemistry Chapter 4 MCQs


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