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

Related Mcqs:

1. Optic fibers are mainly used for which of the following:

   A. Communication
   B. Weaving
   C. Food indudtry
   D. None of these

   Submitted by: Fahad Mehsud

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

   A. Blue
   B. Green
   C. Orange
   D. Yellow

   Submitted by: Malik Asghar Hussain

3. 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

4. Acid rain is mainly caused by emissions of __________ in the atmosphere?

   A. Sulfur Dioxide and Potassium Nitrate
   B. Sulfur and Charcoal
   C. Nitrogen Oxide and Potassium Nitrate
   D. Sulfur Dioxide and Nitrogen Oxide

5. The atmospheric greenhouse effect is produced mainly by the __________________?

   A. Absorption and re-emission of visible light by the atmosphere
   B. Absorption and re-emission of ultraviolet radiation by the atmosphere
   C. Absorption and re-emission of infrared radiation by the atmosphere
   D. Absorption and re-emission of visible light by clouds
   E. Absorption and re-emission of visible light by the ground

   Submitted by: Mansoor Ul Haque

6. The blueness of the sky is mainly due to _____________?

   A. The scattering of sunlight by air molecules
   B. The presence of water vapor
   C. Absorption of blue light by the air
   D. Emission of blue light by the atmosphere

   Submitted by: Mansoor Ul Haque

7. The temperature at which water boils depends mainly on ____________?

   A. Air temperature
   B. Relative humidity
   C. Air pressure
   D. Air density
   E. The specific heat of air

   Submitted by: Mansoor Ul Haque

8. what are stars mainly made of ?

   A. Balls of gass
   B. Rock
   C. Ice
   D. Light

   Submitted by: Farjan Ahmed Soomro

9. LPG consists of mainly:___________?

   A. Methane, Ethane and Hexane
   B. Ethane, Hexane and Nonane
   C. Methane, Hexane and Nonane
   D. Methane, Butane and Propane

   Submitted by: Muhammad Ali Kunbhar

10. LPG consists mainly of : ___________?

    A. Methane,Ethane & Hexane
    B. Ethane,Hexane &Nonane
    C. Methane,Butane & Propane
    D. All of these

    Submitted by: Fahad Mehsud