A 'black hole' is a body in space which does not allow any radiation to come out. This property is due to its

A. Very small size

B. Very large size

C. Very high density

D. Very low density

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  1. The atmospheric· pressure on the surface of Venus is more than__ times the atmospheric pressure of the…
  2. When does the Vernal Equinox occur?
  3. A swarm of small bodies in between the two Planets of Solar System is called 'asteroids' which are those…
  4. What is the difference between a lake and a tank?
  5. What does perigee mean?
  6. When the Sun is vertically overhead along the Tropic of Capricorn at mid-day
  7. Shoemaker-Levy 9 is a
  8. Which star has the largest percentage In the universe
  9. The date on which the Sun is vertical over the 'Tropic of Cancer' is
  10. Which of the following is the largest ocean?
  11. The tail of a comet is directed away from the Sun because
  12. Which of the following statements are true?1. Inner Planets are alternatively called Terrestrial Planets.2.…
  13. Planet nearest to the earth is _____.
  14. What is the most accurate description of the shape of the earth?
  15. How much Is the average distance of the Sun from the Earth?
  16. On which date is the Earth in 'perihelion'?
  17. Equatorial diameter of the Earth is __.
  18. What is the name of 'brightest Planet'?
  19. Presently the farthest planet from the Sun is _____.
  20. What is significant about the town of Greenwich?
  21. How much time does earth take in making one rotation on its axis with respect to a fixed star at infinite…
  22. Which planet does experience a day almost of the same duration as the Earth?
  23. Largest satellite in Solar System is ____.
  24. The rate of rotation of the Earth on its axis is the highest on which of the following date?
  25. The permanent tilt of the Earth's axis and the revolution of the Earth in its orbit together cause
  26. The time period elapsing between one New Moon and the next is approximately
  27. What is the position of the moon called when it la farthest from the earth?
  28. The Sun experiences magnetic storms and this Interferes with the magnetic field oC the Earth and produces…
  29. Consider the following statements regarding asteroids:1. Asteroids are rocky debris of varying sizes…
  30. The name of our galaxy is _______