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The first Indian Satellite launched from a Russian Cosmodrome on April 16, 1975 was named

A. Bhaskara

B. Insat I-A

C. Aryabhatta

D. SLV-l

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  2. The electrical domestic tube light gives white fiourescent light because of
  3. The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because
  4. The transistor was invented by
  5. Changing of one element into another element is known as
  6. The completely dark portion of a shadow of an object is known as
  7. An astronomical unit of distance is
  8. Which of the following sets of elementary particles have nearly equal masses?
  9. The power of a lens is
  10. Under similar conditions of temperature and pressure, the velocity of sound is maximum in
  11. The nuclear model of atom was first visualised by
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  13. One finds it more difficult to walk on ice than on a concrete road because
  14. The orbit of Venus lies between those of
  15. The frequency of an ultrasonic wave is
  16. Pieces of camphor placed on water move about rapidly. This is because of
  17. Stars twinkle because of
  18. Who discovered that the Cree Call acceleration Is the same for any object at a given place?
  19. The pressure of air at high altitude is less than the atmospheric pressure at the sea level. Hence the…
  20. The image of an object formed on the retina of the eye is
  21. Bats flying in the dark avoid obstacles because
  22. Alpha particles are
  23. The heating element often used in an electric iron is
  24. Which of the following pairs is not correct?
  25. X-rays are
  26. The scientist who first sent electromagnetic waves to distant places was
  27. In a concert hall reverberation is controlled by
  28. The theory that the earth constituted the centre of the universe around which the sun and the planets…
  29. A person cups his hand around the mouth when shouting. Why?
  30. The evaporation rate depends on