the layer of atmosphere which blocks ultraviolet radiation from sun is___________________?

Related Mcqs:

1. The heating of atmosphere by gases that are transparent to sun light but opaque to radiated heat is called________________?

   A. Green house effect
   B. Pollution
   C. Warming
   D. Solar radiation

2. Solar energy emitted by sun reaches the earth surface absorbed and returned back in the form of___________________?

   A. Infra blue radiation
   B. Infra red radiation
   C. X rays
   D. None of the above

3. Hot with a cool winter is___________________?

   A. Temperature
   B. Arid
   C. Subtropical
   D. None of the above

4. AZR1 is___________________?

   A. Arid zone research institute
   B. Agriculture zonal research institute
   C. Attock Zonal research institute
   D. None of the above

5. The CO, content of air is___________________?

   A. 1%
   B. 10.3%
   C. 0.03%
   D. 0.002%

6. Genus of cotton is___________________?

   A. Hirsutum
   B. Triticum
   C. Gassypium
   D. Hordeunt

7. Total cropped area of Sindh is___________________?

   A. 2.8 million hac
   B. 3.75 million hac
   C. 4.00 million hac
   D. 4.5 million hac

8. Cotton plant has a mode of germination______________?

   A. Hypogeal germination
   B. Epigeal germination
   C. Both of the above
   D. non of these

9. Root rot of cotton is a_________________?

   A. Bacterial disease
   B. Viral disease
   C. Fungal disease

10. Main reason behind the shedding of flower in cotton is__________________?

    A. Low temperature
    B. High temperature
    C. Humidity
    D. Cloudy day