Home
Class 9
CHEMISTRY
a) During rainy season slaked lime is sp...

a) During rainy season slaked lime is sprinkeld over agricultural fields. Why is this done?
b) What is the reason behind this?
c) There are instance of increased alkali in soil. What type of substances are added in such situations?

Text Solution

Verified by Experts

a) To reduce the acidity of the soil.
b) Neutralisation reaction Acid and alkali react with each other and mutually nullify their individual properties.
c) Acid substances are added.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL BONDING

    V PUBLICATION|Exercise QUESTION BANK|60 Videos

Similar Questions

Explore conceptually related problems

a. A comb run through one's dry hair attracts small bits of paper. Why? What happens if the hair is wet or if it is a rainy day? (Remember, a paper doesn't conduct electricity.) b. Ordinary rubber is an insulator. But special rubber tyres of aircraft are made slightly conducting. Why is this necessary? c. Vehicles carrying inflammable materials usually have metallic ropes touching the ground during motion. Why? d. A bird perches on a bare high power line, and nothing happens to the bird. A man standing on the ground touches the same line and gets a fatal shock. Why?

Take 25ml water in a beaker and pass electricity through it. The add little sulphuric acid in it. a) Why electricity didnot pass through pure water? b) What is your observation when H_2 SO_4 is added in water? c) Which type of ion formed more, when sulphuric acid is added in water.

Diborane is an important hydride of Boron a. During a class room discussion, a student argues that there is a covalent bond between boron atoms in diborane. What is your opinion. Give justification. b. Boron halides can act as Lewis acids. Give reason. c. Arrange the following Lewis acids in the increasing order of acidic strength. Substantiate your answer? 'BF_3 BCl_3, BBr_3'

V PUBLICATION-ACIDS BASES AND SALTS-QUESTION BANK
  1. Given below are few ions [NH4^+, Ca^(2+), SO4^(2-)] a)Write down t...

    Text Solution

    |

  2. Given below is the equation of the reaction between calcium oxide and ...

    Text Solution

    |

  3. a) During rainy season slaked lime is sprinkeld over agricultural fiel...

    Text Solution

    |

  4. Two solutions A and B have pH values of 3 and 8. a) Find the acid an...

    Text Solution

    |

  5. A person showing symptoms of acidity approached a doctor. The medicine...

    Text Solution

    |

  6. HCl, KCl, NaCl, KOH, NaOH Observe the chemical formula given above. ...

    Text Solution

    |

  7. Given below are the equations of the reaction taking place when hydroc...

    Text Solution

    |

  8. Soda water is made by dissolving carbon dioxide in water under high pr...

    Text Solution

    |

  9. Write down the molecular formula of the acid formed when the oxide get...

    Text Solution

    |

  10. Complete the table given below.

    Text Solution

    |

  11. HCl, KOH, Ca(OH)3, H2SO4, ZnCl2 Given are the chemical formula of ce...

    Text Solution

    |

  12. Procedure of an experiment is given below. Take some calcium carbonate...

    Text Solution

    |

  13. pH value of some substances are given in the table given below: Answer...

    Text Solution

    |

  14. Given below is the equation of a chemical reaction between an acid and...

    Text Solution

    |

  15. The medicines used to reduce acidity are known as …........... (Acid...

    Text Solution

    |

  16. Which one of the following compound is not used as chemical fertiliser...

    Text Solution

    |

  17. Which is the cation present in MgCl2 solution?

    Text Solution

    |

  18. Which among the following can be the pH of lime juice? ( 1,4,7,10)

    Text Solution

    |

  19. Number of hydroxide ions increased on dissolving a substance X in wate...

    Text Solution

    |

  20. When an acid reacts with alkali, the products obtained are magnesium s...

    Text Solution

    |