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Short questions of the 9th class short Questions English Medium Chemistry subject chapter 3 are available here. Students look forward to the platform where they could get the short questions in chapter wise. Here at this platform of ilmkidunya.com students can get the short questions of the Chemistry in apt sequence.
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English Medium Chemistry subject short Questions
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9th Class Chemistry Chapter 3 Online Preparation
9th Class English Medium Subjects
9th Class Urdu Medium Subjects
Online Short Questions For Chapter 3 "9th Class Chemistry English Medium Chapter 3 Preparation "
Try The Short Questions For 9th Class Chemistry English Medium Chapter 3 Preparation
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Total Questions10
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Available Sets4
Chemistry (New Book) - 9th Class Chemistry English Medium Chapter 3 Preparation
Question # 1
What is meant by periodic function?
- Ans 1: When any property, whether its chemical or physical of all periodic table elements repeats after a fixed number of elements in increasing atomic number it is referred as periodic function.
9th Class Chemistry English Medium Chapter 3 Preparation - Set 1
Question # 1
What is meant by periodic function?
- Ans 1: When any property, whether its chemical or physical of all periodic table elements repeats after a fixed number of elements in increasing atomic number it is referred as periodic function.
9th Class Chemistry English Medium Chapter 3 Preparation - Set 2
Question # 1
How many elements are placed in first period and what are their names and symbols.
- Ans 1: There are two elements in first period, Hydrogen (H), Helium(He)
9th Class Chemistry English Medium Chapter 3 Preparation - Set 3
Question # 1
Waht are Dobereiner's Triads?
- Ans 1: A German chemist Dobereiner observed relationship between atomic masses of several groups of three elements called Triads. In triads the central and middle element had atomic mass average of the other two elements.
9th Class Chemistry English Medium Chapter 3 Preparation - Set 4
Question # 1
Why ionization energy of Na is less than Ma?
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Ans 1: Ionization energy is the energy required to remove the most loosely bound electron from an atom. As the nuclear charge of an atom increases as more energy is required to remove an electron. Mg atom has a smaller
redius and higher nuclear charge thanNa atom, thus more energy will requireto remove the electron from the same orbital (3s), making the first ionization energy of Mg higher than that ofNa .
9th class Chemistry Chapter 3 Preparation
Here you can prepare 9th chemistry chapter 3 online Short Questions Preparation (Unit 3 Periodic Table and Periodicity of Properties). Click the button for 100% free full practice test.
