As a result of which treaty, ozone hole in Antarctica is slowly healing?

Related Mcqs:

1. There is a hole in the Ozone Layer at__________?

   A. South Pole
   B. North Pole
   C. Both A and B
   D. None of These

   Submitted by: Munwar Ali Sohu

2. Lead ball falls through water more slowly than through air because __________?

   A. The value of ‘g’ is less in water
   B. Density of air is less than that of water
   C. Of the viscous force in water
   D. Of The surface tension of water

3. The gradual physiological adjustment to slowly changing new environmental conditions is known as _____________________?

   A. Selection
   B. Introduction
   C. Acclimatization
   D. Quarantine

   Submitted by: Mansoor Ul Haque

4. The Planet which revolves slowly around the Sun is__________?

   A. Mercury
   B. Mars
   C. Earth
   D. Neptune

   Submitted by: Noor Ahmed

5. If steel is heated to a temperature well below red heat and is then cooled slowly, the process is called_________?

   A. Annealing
   B. Quenching
   C. Tempering
   D. Nitriding

   Submitted by: Muhammad Ali Kunbhar

6. The Continent Antarctica lies at the__________?

   A. North pole
   B. South pole
   C. middle of the earth
   D. Equator
   E. None of these

7. Ozone layer prevents ______________ radiation from entering the atmosphere?

   A. Infra-red
   B. Ultraviolet
   C. X-rays
   D. Gamma rays
   E. None of these

8. Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere?

   A. Carbon dioxide
   B. Chlorofluorocarbons
   C. Nitrogen oxides
   D. Methane

9. Most of the ozone in the atmosphere is concentrated in the____________?

   A. Mesosphere
   B. Troposphere
   C. Stratosphere
   D. Ionosphere

   Submitted by: Ashfaque Ali Khoso

10. Ozone layer thickness is measured in____________?

    A. Metre
    B. Joule
    C. Pounds
    D. Dobson

    Submitted by: Muhammad Husnain Naseer