what are stars mainly made of ?

Related Mcqs:

1. Twinkling of stars is caused by ?

   A. Reflection of light
   B. Polarization of light
   C. refraction of light
   D. Interference of light
   E. None of these

2. In a typical H-R diagram, stars are graphed by these two characteristics:

   A. Temperature and luminosity
   B. Luminosity and distance
   C. Distance and temperature
   D. Size and distance

   Submitted by: Mansoor Ul Haque

3. Particle clouds from where stars are formed are known as____________?

   A. Stellar nurseries
   B. Star clouds
   C. Event horizons
   D. Singularities

   Submitted by: Mansoor Ul Haque

4. What are the names of the two stars in the Big Dipper used to locate Polaris?

   A. The North Seekers
   B. The Pointer Stars
   C. The Pointer Sisters
   D. None of these

   Submitted by: Mansoor Ul Haque

5. 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

6. Stars in the sky appear to twinkle due to _________?

   A. a series of refractions
   B. a series of reflections
   C. a surface tension phenomenon
   D. multiple diminishing brightness

   Submitted by: Abid Hussain

7. 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

8. 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

9. The ‘Solar Corona’ mainly consists of?

   A. Gases
   B. Ice
   C. Molten lava
   D. Cosmic rays

   Submitted by: Saqlain hydar

10. Titan, a moon of __________ , and Triton, a moon of _________ , have atmospheres mainly of _________.

    A. Saturn, Jupiter, Hydrogen
    B. Uranus, Neptune, Nitrogen
    C. Saturn, Neptune, Nitrogen
    D. Mars, Venus, Hydrogen

    Submitted by: Muhammad Abdullah