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State modern periodic law of classificat...

State modern periodic law of classification of elements.

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Modern Periodic Law states that the properties of elements are the periodic functions of their atomic number .
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ICSE-SAMPLE QUESTION PAPER -4-SECTION - II
  1. An element X belongs to 3rd period and group II of the periodic tabl...

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  2. An element X belongs to 3rd period and group II of the periodic tabl...

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  3. State modern periodic law of classification of elements.

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  4. Atomic size increases down a group of the periodic table. Explain.

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  5. Give reason why ? People suffering from acidity are advised to dr...

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  6. Give reasons why : Sodium chloride will conduct electricity only in...

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  7. Give reason why ? Anhydrous HCl is a poor conductor while aqueous ...

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  8. Give reasons for the following : (i) Methane does not undergo addit...

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  9. Write balanced equation for the following: (i) Preparation of ethane...

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  10. Write the equation for the ethene from iodoethane

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  11. Write the equation for the laboratory preparation of ethyne (acetylene...

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  12. Give chemical equation for: The laboratory preparation of methane f...

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  13. Deifne isomerism.

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  14. Give the IUPAC name of the isomer C4H10 which has a branched chain.

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  15. Compare the properties of covalent and electrovalent compounds on...

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  16. Draw an electron dot diagram to show the structure of hydronium ion. S...

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  17. Some properties of Sulphuric acid are listed below . Choose the pro...

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  18. Some properties of Sulphuric acid are listed below . Choose the pro...

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  19. Some properties of Sulphuric acid are listed below . Choose the pro...

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  20. Following is the sketch of electrolytic cell used in the extraction ...

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