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Electrovalent compounds have ..............

Electrovalent compounds have .................. (high/low) melting points.

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Fill in the blanks from the choices given below: Electrovalent compounds have a..................... (low/high) boiling point.

Fill in the blanks from the choice given: Electrovalent compoun have ____ [high/low] melting points.

Fill in the blanks with the correct words from the brackets. Melting and boiling points of covalent compounds are generally ................ (low / high).

Zn, Cd and.......have.....melting points.

Organic compounds have .........melting and boiling points.

[i] Incovalent compounds, the bond is formed due to __ [sharing/ transfer] of electrons. [ii] Electrovalent compounds have a__ [low/ high] boiling point. [iii] A milecule of __ contains a triple bond. [hydrogen, ammonia, nitrogen].

Explain the following: lonic compounds have high melting point and boiling point while covalent compounds have low melting and boiling points.

Give a reason for each of the following: Ionic compounds have a high melting point.

Covalent compounds have low m.p. because :

Explain the following: Covalent compounds usually have low melting and boiling points.

ICSE-SAMPLE PAPER 2016-SECTION-II
  1. Electrovalent compounds have .................. (high/low) melting poi...

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  2. Use the letters only written in the Periodic Table given below to ans...

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  3. Use the letters only written in the Periodic Table given below to ans...

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  4. Use the letters only written in the Periodic Table given below to ans...

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  5. Use the letters only written in the Periodic Table given below to ans...

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  6. If an element has a low ionization energy then it is likely to be ["m...

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  7. If an element has seven electrons in its outermost shell then it is li...

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  8. The following table shows the electronic configuration of the elements...

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  9. The following table shows the electronic configuration of the elements...

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  10. Write a balanced chemical equation for the following: Burning of hex...

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  11. Write a balanced chemical equation for the following: Action of wate...

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  12. Write balanced chemical equations for the Heating of ethanol at 170^@C...

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  13. Give the structural formulae of the following: 2-methyl propane

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  14. Give the structural formula of the following: ethanoic acid

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  15. Give the structural formulae of the following: Butan-2-ol

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  16. Equation for the reaction when compound A is bubbled through bromine d...

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  17. Equation for the reaction when compound A is bubbled through bromine d...

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  18. Fill in the blanks using the appropriate words given below: (Sulphur...

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  19. Fill in the blanks using the appropriate words given below: (Sulphur...

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  20. State your observations when : Dilute hydrochloric acid reacts with ...

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  21. State your observations when : Dilute hydrochloric acid reacts with ...

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