Home
Class 9
CHEMISTRY
We write symbol of water as H2O. State w...

We write symbol of water as `H_2O`. State why should not we write it `HO2' .

Promotional Banner

Topper's Solved these Questions

  • ATOMS AND MOLECULES

    VGS PUBLICATION-BRILLIANT|Exercise OBJECTIVE TYPE QUESTION|1 Videos

Similar Questions

Explore conceptually related problems

Why should not we cut the forests?

Why should we eat food?

Why should we recyle paper?

Why we should not talk while eating ?

Why don't we drink sea water

Molecules in water is H_2O then molecules in the Hydrogen is

Why should we avoid Junk foods ?

Why is the chemical formula for water H_2O and for sodium chloride NaCl, why not HO_2 and NaCl_2 ?

Write equation of state. Why so it so called ?

Can we convert water into ice?explain what should we do

VGS PUBLICATION-BRILLIANT-ATOMS ,MOLECULES AND CHEMICAL REACTIONS-EXERCISE
  1. How many molecules are there in 18 grams of water?

    Text Solution

    |

  2. How many molecules are there in 18 grams of water?

    Text Solution

    |

  3. We write symbol of water as H2O. State why should not we write it HO2'...

    Text Solution

    |

  4. A shiny brown coloured element 'X' on heating in air becomes black in ...

    Text Solution

    |

  5. A student was given the following substances and was asked to show typ...

    Text Solution

    |

  6. Why does respiration considered as an exothermic reaction ? Explain.

    Text Solution

    |

  7. Is 'Na' an element or compond? Why

    Text Solution

    |

  8. Is O2 an element or compound? Why

    Text Solution

    |

  9. ''Freshly cut apple turning brown, the iron articles shiny when new, b...

    Text Solution

    |

  10. Take two beakers and prepare lead nitrate aqueous solution and potassi...

    Text Solution

    |

  11. Latha take some quantity of powder of a substance in a test tube. Heat...

    Text Solution

    |

  12. A light-yellow colour substance (some quantity) on a watch glass light...

    Text Solution

    |

  13. What is the unit of atomic mass?

    Text Solution

    |

  14. On the basis of molecular weights of NaOH and H2O, which is heavier?

    Text Solution

    |

  15. Collect the symbols of various elements.

    Text Solution

    |

  16. Give examples to different net charged ions ?

    Text Solution

    |

  17. Prepare formulae for compounds by using Criss- Cross methods.

    Text Solution

    |

  18. Make a chart showing the concept of mole.

    Text Solution

    |

  19. Draw the diagram of arrangement of appartmentus in the activity of he...

    Text Solution

    |

  20. Draw the diagram of “ Electrolysis of water”.

    Text Solution

    |