Class 9th Chemistry Chapter 4


Total Marks: 29

1. Chlorine-Chlorine has covalent bond:
Single Polar Triple Double
2. Covalent bond involves the
Donation of electrons Sharing of electrons Repulsion of electrons Acceptance of electrons
3. Triple covalent bond involves how many electrons?
6 8 4 3
4. Which of the following does not has polar covalent bond?
Cl2 HI HF HCl
5. Which one the following is a covalent compound :
CH4 KCI NaCl CaO
6. The force among the molecules is :
Covalent force Metallic force Intermolecular force ionic force
7. What type of bond will be formed between two atoms of hydrogen?
Covalent bond Ionic bond Metallic bond Coordinate covalent bond
8. Covalent bond between two different atoms is:
Polar non polar Ionic Coordinate covalent
9. Which of the following forces is weak?
ionic force covalent force intermolecular force co ordinate covalent force
10. A bond formed between two non metals is expected to be:
Covalent Ionic Coordinate covalent Metallic
11. When an electronegative element combine with an electropositive element the type of bonding is:
Covalent Ionic Polar covalent Coordinate covalent
12. Transfer of electrons between atoms results in:
metallic bonding Covalent bonding Ionic bonding Coordinate covalent bonding
13. Octate rule is:
Description of eight electrons Pattern of electronic configuration Picture of electronic configuration Attaining of eight electrons
14. Considering the electronic configuration of atoms which atom with the given atomic number will be the most stable one?
6 10 8 12
15. An atom having 6 electrons inits valence shell will achieve noble gas electronic configuration by:
Gaining one electron Gaining 2 electrons Losing all electrons Losing 2 electrons
16. Atoms react with each other because
They are attracted to each other They are short of electrons They want to attain stability They want to disperse
17. A bond pair in covalent molecules usually has
One electron Two electrons Three electrons Four electrons
18. Which of the following compounds is not directional in its bonding
CH4 KBr CO2 H2 O
19. Ice floats on water because
Ice is denser than water Water is denser than ice Ice is crystalline in nature Water molecules move randomly
20. Covalent bond involves the
Donation of electrons Sharing of electrons Repulsion of electrons Acceptance of electrons
21. Which one of the following is an electron deficient molecule?
NH3 BF3 N2 O2
22. The number of electrons in the valence shell of noble gases is.
8 7 6 17
23. The melting point of sodium chloride (NaCl) is.
600 C 800 C 1000 C 1200 C
24. The boiling point of sodium chloride is.
1413 C 1513 C 1613 C 1713 C
25. Which type of bond is present in NaCl ?
Covalent Ionic Metallic Co-ordinate covalent
26. How much energy is required to break a chemical bond?
428 kJ 429 kJ 430 kJ 431 kJ
27. Which of the following compunds are mostly found in crystalline form?
Ionic compounds Polar compounds Non-polar compounds Covalent compouns
28. Noble gases are stable because.
Their valence shell is complete Their valence shell is half filled There is no electron in their valence shel There are three electrons in their valence shell
29. The noble gas which does not have eight electrons in valence shell is
He Ne Ar Xe