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Punjab (PTB) · Chapter test · Free

9th Class Chemistry Chapter 3 TestChemical Bonding

30 marks · 40 minutes · 21 questions. Covers: CHAP 3: Chemical Bonding.

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9th Class Chemistry Chapter 3 Test

9th Class · Chemistry · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. Nitrogen molecules contains:

    1. Polar covalent bond

    2. Single covalent bond

    3. Double covalent bond

    4. Triple covalent bond

  2. Role of doner atom in coordinate covalent bond:

    1. Accept electrons

    2. Donate electrons

    3. Share electron

    4. Form complex ion 

  3. Covalent bond is most commonly found between the elements of group:

    1. 13 to 17

    2. 1 to 13

    3. 16 to 18

    4. 15 to 18

  4. A bond pair in covalent molecules usually has:

    1. One electrons

    2. Two electrons

    3. Three electrons

    4. Four electrons

  5. Which one of the following compounds are soluble in organic solvents? 

    1. Ionic compound

    2. Covalent compounds.  

    3. Both   

    4. None of these

  6. Which is correct? 

    1. Bonding forces are weaker than attractive forces.   

    2. Both are equal.  

    3. Bonding forces are stronger than attractive force

    4. All of these

  7. A covalent bond formed by two similar atoms is known as:

    1. Polar covalent bond

    2. Non-polar covalent bond

    3. Metallic bond 

    4. Double covalent bond

  8. Which type of covalent bond is present in ethene?

    1. Triple

    2. Double

    3. Single

    4. No bond is formed

  9. Which one of the following is the weakest force among the atoms?

    1. Ionic force

    2. Metallic force

    3. Intramolecular force

    4. Covalent forces

  10. What type of elements form ionic bonds?

    1. Metals

    2. Non-metals

    3. Metals and non-metals

    4. None of these

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. What is the structure of graphite.

  2. Draw a structure of water molecules showing hydrogen bonding.

  3. Describe the phenomenon of forming ionic bond between sodium chloride by equations?

  4. Which compound is not able to form a coordinate covalent bond? 

  5. Give one example of an element which exists as a crystalline solid and it has covalent bonds between its atoms.

  6. Why diamonds is considered so hard?

  7. Compare the properties of ionic and covalent compounds? 

  8. What type of elements lose their outer electron easily and what type of elements gain electron easily?

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. Discuss formation of coordinate covalent bond with examples.

  2. What is metallic bond? On which factors the strength of metallic bond depends?

  3. The formula of AICI3 in vapour phase is AI2CI6 which means it exists as a dimer. Explain the bonding between its two molecules?