Home
Class 11
CHEMISTRY
This question has Statement I and Statem...

This question has Statement I and Statement II. Of the four choice given after the Statement, choice the one that best describes the two Statements.
Statement - I : ionosphere contains gases in the ionised form which form the bases for wireless communication.
Statement - II : The ions reflect back the radio waves tp the earth

A

Statement - I is true, statement -II is true,Statement - II is a correct explanation of Statement - I

B

Statement - I is true, Statement - II is true, Statement - II is not a correct explanation of Statement - I.

C

Statements - I is true, Statement - II is false.

D

Statement - I is false, Statement - II is true.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

    PATHFINDER|Exercise QUESTION BANK|242 Videos
  • EQUILIBRIUM

    PATHFINDER|Exercise QUESTION BANK|660 Videos

Similar Questions

Explore conceptually related problems

This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement - I: BeCl_2 fumes in moist air. Statement - II: BeCl_2 reacts with moisture to form HCl gas.

This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement - I: Helium shows positive deviation from ideal behaviour Statement - II: Helium is a noble gas.

This question has statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement-I: All arrhenius acids are also Bronsted acids. Statement-II: All Bronsted bases are also Lewis bases.

This question has Statement I and Statement II. Of the four choice given after the Statement, choice the one that best describes the two Statement. Statement - I : The temperature in the thermosphere increases with attitude Statement - II : Ozone present in stratosphere absorbs ultraviolet radiation

This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement - I : Solutions of alkali metals in liquid ammonia are good reducing agents. Statement - II: They contain free or solvated electrons

This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement- I: Caesium is used in photoelectric cells. Statement - II : Caesium is most electropositive element.

This question has Statement I and Statement II. Of the four choice given after the Statement, choice the one that best describes the two Statements. Statement - I : Now a days surface of the earth gets heated up Statement - II : CO_2 and water vapour partly reflects IR radiation back to earth's surface

This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement - I : The twist boat form of cyclohexane is more stable than boat form. Statement - II : There is no dipple-dipple interactions in the twist boat form.

PATHFINDER-ENVIRONMENTAL CHEMISTRY-QUESTION BANK
  1. Regarding BOD5, which statements are incorrect ?

    Text Solution

    |

  2. This question has Statement I and Statement II. Of the four choice giv...

    Text Solution

    |

  3. This question has Statement I and Statement II. Of the four choice giv...

    Text Solution

    |

  4. This question has Statement I and Statement II. Of the four choice giv...

    Text Solution

    |

  5. This question has Statement I and Statement II. Of the four choice giv...

    Text Solution

    |

  6. This question has Statement I and Statement II. Of the four choice giv...

    Text Solution

    |

  7. This question has Statement I and Statement II. Of the four choice giv...

    Text Solution

    |

  8. This question has Statement I and Statement II. Of the four choice giv...

    Text Solution

    |

  9. This question has Statement I and Statement II. Of the four choice giv...

    Text Solution

    |

  10. This question has Statement I and Statement II. Of the four choice giv...

    Text Solution

    |

  11. Which of the following phenomenon are the outcome of ozone hole ?

    Text Solution

    |

  12. The ozone layer is present in

    Text Solution

    |

  13. Match Column -I with Column -II

    Text Solution

    |

  14. Match Column -I with Column -II

    Text Solution

    |

  15. A mixture of CO and O2 when exposed to haemoglobin,it is CO and not O2...

    Text Solution

    |

  16. How does carbon monoxide link to haemoglobin ?

    Text Solution

    |

  17. Differentiate pesticide and herbicides.Explain with example.

    Text Solution

    |

  18. What is meant by green chemistry ? How does it help in decreasing envi...

    Text Solution

    |

  19. Metal ion responsible for the Minamata disease is

    Text Solution

    |

  20. Among the following, the one which is not a ''greenhouse gas'', is

    Text Solution

    |