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Science Quiz 21

Welcome to your Science Quiz 21

1. 
Diffusion of light in the atmosphere takes place due to: [2003]

2. 
Which one of the following statements is not correct? [2003]

3. 
Regarding the atom of a chemical element, the magnetic quantum number refers to: [2003]

4. 
Assertion (A): The weight of a body decreases with the increase of latitude on earth: [2003] Reason (R): The earth is not perfect sphere

Choose the correct option.

5. 
Consider the following natural phenomena: [2002]

  1. Terrestrial heating 
  2. Reflection of light 
  3. Refraction of light 
  4. Diffraction of light 

Due to which of these phenomena is mirage formed?

6. 
Sun’s halo is produced by the refraction of light in: [2002]

7. 
Consider the following statements: [2002]

  1. Light of longer wavelength is scattered much more than the light of shorter wavelength. 
  2. The speed of visible light in water is 0.95 times and speed in vacuum. 
  3. Radio waves are produced by rapidly oscillating electrical currents. 
  4. To detect the over speeding vehicles, police use the Doppler effect of reflected short radio waves 

Which of these statements are correct?

8. 
Assertion (A): With the increase of temperature, the viscosity of glycerine increases: [2002] Reason (R): Rise of temperature increases kinetic energy of molecules.

Choose the correct option.

9. 
Assertion (A): An iron ball floats on mercury but gets immersed in water: [2002] Reason (R): The specific gravity of iron is more than that of mercury.

Choose the correct option.

10. 
An oil tanker is partially filled with oil and moves forward on a level road with uniform acceleration. The free surface of oil then: [2003]

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