Atif Pedia

 1. What is the approximate mean distance that separates the sun from the earth?
(a) 1600,90,000 kms
(b) 1480,00,000 kms
(c) 1500,00,000 kms
(d) 1890,70,000 kms

2. The outer surface of the sun is called?
(a) Thermosphere
(b) Lithosphere
(c) Ionosphere
(d) Photosphere 

3. Which planet has the maximum number of satellites?
(a) Mars
(b) Mercury 
(c) Venus
(d) Jupiter

4. What is a light year?
(a) The year marked by extraordinary amount of radiation of sleight
(b) The year marked by the extraordinary less amount of radiation of sunlight reaching the earth due to protracted cloudy weather on earth making that year lighter than the normal
(c) The year in which the sun radiates more light making one complete extra day in February
(d) The distance travelled by light in 01 year. 

5. What are Red Giants?
(a) Stars which appear red because of their consuming a portion of their hydrogen. 
(b) The cluster of giant sized stars visible near mars
(c) Stars which consume some of their oxygen and thus appear red due to lack of O2
(d) Powerful communist countries.

6. What are asteroids?
(a) Piece of falling stares
(b) Satellite of other planets
(c) Very small planet revolving around the sun
(d) Rocks found on the moon

7. What is the temperature at the centre of the sun?
(a) 6 million k
(b) 10 million k
(c) 12 million k
(d) 20 million k (Correct)

8. The phase of moon are partially the result of the?
(a) Changes in the shape of the moon
(b) Revolution of the moon about the earth (Correct)
(c) Variation in the moon’s gravitation
(d) Variation in the speed of rotation of the moon

9. Constellations referred to as Zodiac are?
(a) Imaginary region that encompass the path of the planets (Correct)
(b) Signs of Roman god
(c) A group of stars
(d) None of these

10. The height of a geo-stationary satellite from the surface of the earth is about?
(a) 360 km
(b) 3600 km (Correct)
(c) 23000 km
(d) 360,000 km

1. Which of the following explain the reasons why there is no total eclipse of the sun?
(a) Area of the sun covered by the moon (Correct)
(b) Direction rotation around the sun
(c) Orbit of moon around the sun
(d) Size of earth in relation to that of moon

2. The instrument used to measure the specific gravity of milk is?
(a) Barometer
(b) Hygrometer
(c) Lactometer (Correct)
(d) None of these

3. The internal antenna of transistor set is made of?
(a) Iron
(b) Ferror Chrome (Correct)
(c) Copper
(d) Alnico

4. Gerontology is the study of?
(a) Process of ageing (Correct)
(b) Growth of cells
(c) Birds
(d) Vegetables

5. Helium is used for respiration in deep water instead of nitrogen because
(a) It is heavier than nitrogen (Correct)
(b) It is higher than nitrogen
(c) It mixes less in blood than nitrogen
(d) It helps oxygen to burn more quickly

6. In a fluorescent tube which of the following components are found?
(a) Mercury vapour (Correct)
(b) Argon and carbon dioxide
(c) Helium and oxygen
(d) Argon and neon

7. The common ore of aluminium is?
(a) Chromite` (Correct)
(b) Cryolite
(c) Bauxite
(d) Monazite

8. When one enters a dark room, he is not able to see anything but, after sometime vision
improves. This is because?
(a) The retina of the eye comes forward
(b) The retina of the eye moves backward
(c) The pupil of the eye contracts
(d) The pupil of the eye dilates (Correct)

9. Radio carbon dating is used to find the age of?
(a) Fossils (Correct)
(b) Building
(c) Rocks
(d) Babies

10. What is periscope used for?
(a) To survey the ships on the surface of the sea when the submarine is under water (Correct) (Correct)
(b) To extinguish fire
(c) To measure purity of milk
(d) None of the above