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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
Why a covalent bond becomes polar?
- Ans 1: When there is a difference of electronegativity between two covalently bonded atoms there will be unequal attraction for the bond pair of electrons between such atoms. It will result in the formation of polar covalent bond.
9th Class Chemistry English Medium Chapter 4 Preparation - Set 1
Question # 1
Why a covalent bond becomes polar?
- Ans 1: When there is a difference of electronegativity between two covalently bonded atoms there will be unequal attraction for the bond pair of electrons between such atoms. It will result in the formation of polar covalent bond.
9th Class Chemistry English Medium Chapter 4 Preparation - Set 2
Question # 1
Define chemical bond.
- Ans 1: A chemical bond is defined as a force of attraction between atoms that holds them together in a molecule.
9th Class Chemistry English Medium Chapter 4 Preparation - Set 3
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 4
Question # 1
Why does oxygen molecule not form a polar covalent bond.
- Ans 1: In oxygen molecule there are two same atoms and have same electronegativity. Hence oxygen molecule does not form a polar covalent bond.
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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