A pair of stars that revolve round each other is

A. a neutron star

B. a binary star

C. a dwarf star

D. a polar star

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  1. If a body weight 12N on the surface of the earth, how much will it weigh on the surface of the moon…
  2. A star contains
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  5. Stars twinkle because of
  6. Increase in pressure
  7. Sound travels fastest in
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  17. A stationary elevated object has
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  20. Mica is used in an electric iron because it is a
  21. Isotones are species of atoms containing
  22. The stars that shine brightly then dimly and then brightly are known as
  23. Drinks kept in a vacuum flask remain hot or cold as the case may be for a long time because
  24. A device used to measure heights above sea level is known as
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  28. Resistance is measured in
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  30. Which of the following revolves round the nucleus in an atom?