General Knowledge -4

Q1. Which star is nearest to the sun?
(a)Alpha Centauri or proxima Centauri
(b)Bernard's star
(c)Wolf 359
(d)Sirius

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Q2. The sunspot cycle is:
(a)3 Years
(b)11 Years
(c)26 Years
(d)49 Years

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Q3. Which star is cooler and many times brighest than Earth's Sun?
(a)Barnard's star
(b)Betelgeuse
(c)Rigel
(d)Sirius

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Q4. Which Planet are never visible at midnight?
(a)Mercury and Venus
(b)Earth and Venus
(c)Mercury and Mars
(d)None of the above

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Q5. A first magnitude star is how many times brighter than a second magnitude star?
(a)2.5
(b)7.3
(c)10.0
(d)12.0

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Q6. What is the sideral period of the moon?
(a)27 and 1/3 days
(b)20 and 2/3 days
(c)30 and 1/3 days 
(d)27 days

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Q7. What is the approximately age of the sun?
(a) 1 billion years 
(b) 2 billion years 
(c) 5 billion years
(d) 20 billion years

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Q8. How many planets are their in our solar system?
(a)8
(b)9
(c)10
(d)12

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Q9. The no. of neutrons containing in ₉₂ U^{238 is:}
(a) 92
(b) 146
(c) 238
(d) 330

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Q10. Which of the following has shortest wavelengths?
(a)Ultra-violet rays
(b)Infrared rays 
(c)visible light 
(d)Nothing can be decide

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