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the Short question of 9th class English medium of chemistry subjects chapter 4 is available on our website ilmkidunya.pk, we always try to facilitate students so that why we are giving you a chance to download the short question. Student always wants the best material for study. For which student have to suffer allot but now the get best shot question from our web site easily
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9th Class Chemistry Chapter 4 Online Preparation
9th Class English Medium Subjects
9th Class Urdu Medium Subjects
Online Short Questions For Chapter 4 "9th Class Chemistry English Medium Chapter 4 Preparation "
Try The Short Questions For 9th Class Chemistry English Medium Chapter 4 Preparation
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Total Questions10
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Available Sets4
Chemistry (New Book) - 9th Class Chemistry English Medium Chapter 4 Preparation
Question # 1
What is relationship between electronegativity and polarity?
- Ans 1: Electronegativity values of the atoms play a very important role in polarity of compounds. These two terms have direct relationship with one another, because of electronegativity difference is high then more polar bond will be and vice versa.
9th Class Chemistry English Medium Chapter 4 Preparation - Set 1
Question # 1
What is relationship between electronegativity and polarity?
- Ans 1: Electronegativity values of the atoms play a very important role in polarity of compounds. These two terms have direct relationship with one another, because of electronegativity difference is high then more polar bond will be and vice versa.
9th Class Chemistry English Medium Chapter 4 Preparation - Set 2
Question # 1
Why is BF3 electron deficient?
- Ans 1: In BF3 molecule, three valence electrons of boron atom pair up with three electrons. One from each of three fluorine atoms. The boron atom even after the sharing of electron remain shortage of 2 electrons in its outer most shell.
9th Class Chemistry English Medium Chapter 4 Preparation - Set 3
Question # 1
Define intermolecular forces.
- Ans 1: Along the strong forces, relatively weak forces also exist in between molecules called intermolecular force.
9th Class Chemistry English Medium Chapter 4 Preparation - Set 4
Question # 1
Why noble gases are non-reactive?
- Ans 1: The noble gases do have 2 or 8 electrons in their valence shells. It means all the noble gases have their valence shells completely filled . Their atoms do not have vacant space in their valence shell to accommodate extra electrons. therefore noble gases do not gain, lose or share electrons. That's why they aare non-reactive.
9th class Chemistry Chapter 4 Preparation
Here you can prepare 9th chemistry chapter 4 online Short Questions Preparation (Unit 4 Structure of Molecules). Click the button for 100% free full practice test.
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