Home
Class 11
CHEMISTRY
Use of chlorofluoro carbons is not encou...

Use of chlorofluoro carbons is not encouraged because (1)They are harmful to the eyes of people that use this. (2)They damage the refrigerators and air conditioners. (3)They eat away the ozone in the atmosphere. (4)They destroy the oxygen layer.

A

they are harmful to the eyes of people that use 16

B

they damage the refrigerators and air conditioners.

C

they eat away the ozone in the atmosphere.

D

they destroy the oxygen layer.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

    V PUBLICATION|Exercise QUESTION BANK|124 Videos

  • EQUILIBRIUM

    V PUBLICATION|Exercise QUESTION BANK|87 Videos

Similar Questions

Explore conceptually related problems

Green chemistry means such reactions which (1)Produce colour during reactions. (2)Reduce the use and production of hazardous chemicals. (3)Are related to the depletion of ozone layer (4)Study the reactions in plant

Construct a reaction between carboxy haemoglobin with oxygen from the following equations. Haemoglobin +O_2 (aq) rarr Oxyhaemoglobin, Delta H_(l)=-23.1 kJ / mol rarr(1) Haemoglobin +CO (aq) rarr Carboxyhaemoglobin, Delta H_(2)=,-32.4 kJ / mol rarr(2) a. Using the value of Delta from your equation, account for the extreme toxicity of carbon monoxide. b. What are the sources of carbon monoxide in the atmosphere. How can you rectify the adverse éffects of C O in atmosphere?

In which part of atmosphere, ozone layer is present? (1)Stratosphere (2)Troposphere (3)Mesosphere (4)Thermosphere

Which of the following statement is incorrect in case of anhydrous aluminium chloride (1) Fumes in moistt air due to formation of HCl gas (2) Prepared by passing dry chlorine over heated mixture of alumina and carbon (3) Being electron deficient, act as Lewis base (4) Used as catalyst in Friedel-Craft's reaction

Dumas method is used for the estimation of (1)Carbon (2)Nitrogen (3)Sulphur (4)Halogens

The allotropic form of carbon which is used for making lead of pencil is,(1)Lamp black (2)Charcoal (3)Graphite (4)Gascarbon

V PUBLICATION-ENVIRONMENTAL CHEMISTRY-QUESTION BANK
  1. When rain is accompanied by a thunderstorm, the collected rain water w...

    Text Solution

    |

  2. .Name two compounds that can cause depletion of the ozone layer in the...

    Text Solution

    |

  3. The brown haze of photochemical smog is largely attributable to NO NO...

    Text Solution

    |

  4. Which of the following is not a greenhouse gas?

    Text Solution

    |

  5. Use of chlorofluoro carbons is not encouraged because (1)They are harm...

    Text Solution

    |

  6. Match the Column I and Column II and pick the correct matching from th...

    Text Solution

    |

  7. Ozone in stratosphere is depleted by

    Text Solution

    |

  8. Which of the following statements is false? (1)Photochemical smog caus...

    Text Solution

    |

  9. An important product in the ozone depletion by chlorofluoro carbons is...

    Text Solution

    |

  10. Which one of the following statement is not true? Oxides of sulphur, ...

    Text Solution

    |

  11. Excess of nitrate ions in drinking water causes.

    Text Solution

    |

  12. The water pollutants mainly responsible for eutrophication are

    Text Solution

    |

  13. The hardness of water is estimated by

    Text Solution

    |

  14. Surface water contains

    Text Solution

    |

  15. The reagent commonly used to determine hardness of water titrimetrical...

    Text Solution

    |

  16. Water softening by clarke's process uses

    Text Solution

    |

  17. What is the reagent used for testing fluoride ion in water? Alizarin-...

    Text Solution

    |

  18. The chemical formula of zeolite is : K2 Al2 Si2 O8 . xH2 O, CaAl2 Si...

    Text Solution

    |

  19. Which of the following organisation is engaged in the promotion and co...

    Text Solution

    |

  20. Which of the following waste materials can be used for producing bio-g...

    Text Solution

    |