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The brightest planet in the Solar System is

A. Jupiter

B. Mercury

C. Venus

D. Sirius

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  1. Acoustics' la a branch or study dealing with
  2. Water kept in an earthen pot is less cool on rainy days than in summer because during the rainy days
  3. The unit of power in SI is
  4. When the resistance of a circuit increases the current will
  5. Out of the following which element has the longest half-life period?
  6. The spectrum of white light can be studied by
  7. The source of electric energy in an artificial satellite is
  8. In the visible spectrum which colour has the shortest wavelength?
  9. The stars that shine brightly then dimly and then brightly are known as
  10. When sound waves travel from one medium to another, the quantity which remains unchanged is its
  11. Isotones are species of atoms containing
  12. Velocity of sound in high altitudes is low because at such a height
  13. Less dew is formed on cloudy nights because
  14. The cover of a solar cooker is made of glass because
  15. For an electron orbiting in a hydrogen atom, the necessary centripetal force keeping it in orbit is…
  16. When a particle in motion is acted upon by a force in a direction perpendicular to the direction of…
  17. Air escaping rapidly from a narrow orifice in an inflated tyre feels cool because
  18. On the Kelvin scale, the melting point of ice is
  19. A star contains
  20. While crossing a suspension bridge, the soldiers are ordered to break steps because
  21. The instrument used to measure atmospheric pressure is
  22. The image formed by a plane mirror is
  23. The brightest star visible to the naked eye is
  24. Which of the following rays has the highest penetrative power?
  25. The barometer was invented by
  26. The maximum range of most TV signals is from 121 to 240 km only because
  27. The plants in a greenhouse are enclosed in a glass enclosure because
  28. Warm air will hold more water vapour than cold air because
  29. A piece of ice is Boating In water kept in a beaker. When all the ice melts the level of water will
  30. The orbit of Venus lies between those of