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The following table represent the elemen...

The following table represent the elements and the atomic number:
With reference to this, answer the following using only the alphabets given in the table.

Which element combines with hydrogen to form a basic gas ?

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Q (`QH_(3)` is the basic gas)
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ICSE-SAMPLE PAPER 2020-SECTION-II (40 Marks) Attempt any four questions from this Section
  1. The following table represent the elements and the atomic number: Wi...

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  2. The following table represent the elements and the atomic number: Wi...

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  3. The following table represent the elements and the atomic number: Wi...

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  4. Draw the electron dot diagram for the compounds given below. Represent...

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  5. Draw the electron dot diagram for the compounds given below. Represent...

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  6. Draw the electron dot diagram for the compounds given below. Represent...

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  7. Choose the correct word which refers to the process of electrolysis fr...

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  8. Choose the correct word which refers to the process of electrolysis fr...

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  9. Choose the correct word which refers to the process of electrolysis fr...

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  10. Choose the correct word which refers to the process of electrolysis fr...

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  11. Write chemical reactions taking place in the extracion of Aluminium fr...

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  12. Complete the by selecting the correct option from the choices given : ...

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  13. Complete the statements given below using the correct word /s The...

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  14. Select the correct word or formula from the same give in bracket : ...

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  15. Match the gases given in column I to the identification of the gases m...

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  16. Differentiate between the pairs based on the information given in the ...

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  17. Differentiate between the pairs based on the information given in the ...

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  18. Differentiate between the pairs based on the information given in the ...

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  19. Draw the structures of isomers of pentane.

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  20. Hydrogen chloride gas is prepared in the laboratory using concentrated...

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