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Fill in the blanks using the correct options:
Group 18 elements have ------ valence electrons (4 / 8) with the exception of ---- ( He / Ne) with -------- electrons (2 / 8) in valence shell.

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ICSE MODEL PAPER-SAMPLE PAPER 2022-SECTION I
  1. The following questions refer to the periodic table : Name the elem...

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  2. Fill in the blanks using the correct options: Metals have ------ io...

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  3. Fill in the blanks using the correct options: Group 18 elements hav...

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  4. Group II metals are called metals. (alkali/alkaline earth).

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  5. Draw different isomers having the following molecular formula: (i) ...

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  6. What is denatured alcohol?

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  7. Give two important uses of ethanol.

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  8. Write equation for : Preparation of ethanol by hydration of C2H4.

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  9. Write equation for : Preparation of acetic acid from ethanol.

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  10. Name the method by which following compounds can be prepared: Select ...

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  11. Name the method by which following compounds can be prepared: Select ...

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  12. Name the method by which following compounds can be prepared: Select ...

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  13. How will you distinguish between following pairs of compounds using NH...

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  14. How will you distinguish between following pairs of compounds using NH...

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  15. How will you distinguish between following pairs of compounds using NH...

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  16. Name: A greenish yellow gas with pungent smell.

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  17. Name: An oxide which is yellow when hot and white when cold.

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  18. Name: A chemical used to deplete ozone layer.

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  19. Name: A crystalline salt without water of crystallization.

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  20. This metal is a liquid at room temperature.

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