Chemistry For Class IX (New Book ) - Chapter No. 4 - Chemical Bonding - Multiple Choice Questions And Fill In The Blanks

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Chapter No.4 - Chemical Bonding
MCQs And Fill In The Blanks
Text Book Exercise

SECTION- A: MULTIPLE CHOICE QUESTIONS
Tick Mark (✓) the correct answer

1. An example of ionic compound is:
(a)H₂
(b)CH₄
(c) N₂
(d)NaCl ✓

2. Interaction between highly electron deficient hydrogen and highly electronegative atom is called:
(a) covalent bond
(b) ionic bond
(c) hydrogen bond ✓
(d) metallic bond

3. Two fluorine atoms share one electron each in their outermost shell to achieve electronic configuration of:
(a) Xe
(b) Ar
(c) Kr
(d) Ne ✓

4. Number of electrons lost by atoms of group IIIA equals:
(a) 1
(b) 2
(c) 3 ✓
(d) 4

5. Atom which loses two electrons from its outer shell to form ion is called:
(a) oxygen
(b) potassium
(c) magnesium ✓
(d) carbon

6. In NaCl crystal lattice each Na⁺ ion is surrounded by:
(a) 6 Cl^- ions ✓
(b) 6 Na⁺ ions
(c) 8 Cl^- ions
(d) 12 Cl^- ions

7. At room temperature most of ionic compounds are:
(a) amorphous solids
(b) crystalline solids ✓
(c) liquids
(d) gases

8. Tendency of atoms to acquire eight electrons in their valence shell is:
(a) octet rule ✓
(b) duplet rule
(c) triplet rule
(d) none of above

9. When one atom forms cation by losing electron and other forms anion by accepting that electron then bond form between them is:
(a) Covalent bond
(b) Ionic bond ✓
(c) coordinate covalent bond
(d) hydrogen bond

10. Nobel gases are stable because they contain:
(a) 4 electrons in valence shell
(b) 6 electrons in valence shell
(c) 8 electrons in valence shell ✓
(d) 10 electrons in valence shell

11. Bond which involve 3 shared electron pairs is a:
(a) double covalent bond
(b) single covalent bond
(b) triple covalent bond ✓
(d) none of above

12. A non-metal atom form anion by:
(a) loses of electrons
(b) gain of electrons ✓
(c) loses of protons
(d) gain of protons

13. When two identical atoms share electron pairs and exert force on each other than bond form is:
(a) non-polar covalent bond ✓
(b) polar covalent bond
(c) double covalent bond
(d) coordinate covalent bond

14. Synthetic resins are used on places where:
(a) electric resistance is required
(b) water resistance is required
(c) adhesion is required ✓
(d) friction is required

15. Oxygen belongs to group VIA so number of electrons in its valence shell are:
(a) 3
(b) 4
(c) 5
(d) 6 ✓

16. Electron pairs which are not shared by atoms are called:
(a) electron pairs
(b) lone pairs ✓
(c) bond pairs
(d) shared pairs

17. Strength of intermolecular forces from ionic to covalent bond is:
(a) Weaker ✓
(b) stronger
(c) equal
(d) none of above

18. Ionic crystals have:
(a) high melting points✓
(b) moderate melting points
(c) low melting points
(d) none of above

19. Bond formed by mutual sharing of electron is:
(a) ionic bond
(b) coordinate covalent bond
(c) covalent bond ✓
(d) metallic bond

20. Which of the following diagram shows atoms are bonded with same electronegativity?
(a) A -----:----- B ✓
(b) A ----------: B
(c) A :---------- B
(d) A --:-------- B