Ans: (c)
395. The brightest star visible to the naked eye is
   (a) Sirius
   (b) Vega
   (c) Rigel
   (d) Proxima Centauri
Ans: (a)
396. A star contains
   (a) about 75% of hydrogen
   (b) 22% helium
   (c) traces of most other elements including oxygen, neon, carbon and
   (d) All the above
Ans: (d)
397. The orbit of Venus lies between those of
   (a) Mercury and Earth
   (b) Earth and Mars
   (c) Mars and Saturn
   (d) Mars and Jupiter
Ans: (a)
398. The brightest planet in the Solar System is
   (a) Jupiter
   (b) Mercury
   (c) Venus
   (d) Sirius
Ans: (c)
399. The planet with the reddish tinge is
   (a) Jupiter
   (b) Mars
   (c) Mercury
   (d) Saturn
Ans: (b)