Which one of the following wavelengths of light is most effective in photosynthesis?

Related Mcqs:

1. Very High Frequency (VHF) have __________ wavelengths?

   A. shorter B. shortest C. longer D. longest...

2. Which of the following gases do plants and trees give out during photosynthesis?

   A. Hydrogen B. Nitrogen C. Oxygen D. Carbon dioxide Submitted by: ABDUL HAYEE...

3. The source of oxygen in photosynthesis is

   A. water B. salts C. minerals D. glucose...

4. In night, when photosynthesis is stopped, plants__________?

   A. take in Carbon Dioxide B. give off Oxygen C. give off Carbon Dioxide D. None of these...

5. In which part of the Plant does photosynthesis take place?

   A. Flowers B. Roots C. Stem D. Leaves Submitted by: ABDUL HAYEE...

6. Which of the following is mainly used for light patrol engines ?

   A. Kerosene oil B. Paraffin oil C. Heavy Fuel oil D. Gasoline Submitted by: Faheem Zaman Dhaunroo...

7. Which of the following phenomena of light are involved in the formation of a rainbow?

   A. Refraction B. Dispersion C. Total internal reflection D. All of the above Submitted by: Safdar Abbas...

8. Water is a highly effective coolant for a car engine because _________?

   A. Water is good conductor of heat B. Water has very high specific heat capacity C. Water boils at a comparatively high temperature D. Evaporation of water produces lot of cooling...

9. 1 light year = ?

   A. 9.5×106 km B. 9.5×109 km C. 9.5×1012 km D. 9.5×1018 km...

10. The light of distant stars is affected by __________ ?

    A. The earth’s atmosphere B. Interstellar dust C. both A and B D. None of these Submitted by: Rashid Mehmood...