General Knowledge Science Questions with Answers Practice Mock Test Free. GK science questions with answers test preparation.
1.What is the approxiate mean distance that separates the sun from the earth?
Ans 1480,00,000 kms
2. The outer surface of the sun is called ?
Ans Photosphere
3. Which planet has the maximum number of satellites?
Ans Jupiter
4. What is a light year?
Ans The distance travelled by light in 01 year.
5. What are Red Giants?
Ans Stars which appear red because of their consuming a portion of their hydrogen.
6. What are asteriods?
Ans Very small planet revolving around the sun
7. What is the temperature at the centre of the sun?
Ans 20 million k
8. The phase of moon are partially the result of the ?
Ans Revolution of the moon about the earth
9. Constellations referred to as Zodiac are ?
Ans Imaginary region that encompass the path of the planets
10. The height of a geo-stationary satellite from the surface of the earth is about ?
Ans 3600 km
Ans 1480,00,000 kms
2. The outer surface of the sun is called ?
Ans Photosphere
3. Which planet has the maximum number of satellites?
Ans Jupiter
4. What is a light year?
Ans The distance travelled by light in 01 year.
5. What are Red Giants?
Ans Stars which appear red because of their consuming a portion of their hydrogen.
6. What are asteriods?
Ans Very small planet revolving around the sun
7. What is the temperature at the centre of the sun?
Ans 20 million k
8. The phase of moon are partially the result of the ?
Ans Revolution of the moon about the earth
9. Constellations referred to as Zodiac are ?
Ans Imaginary region that encompass the path of the planets
10. The height of a geo-stationary satellite from the surface of the earth is about ?
Ans 3600 km
11. Which of the following explain the reasons why there is no total eclipse of the sun?
Ans Area of the sun covered by the moon
12. The instrument used to measure the specific gravity of milk is?
Ans Lactometer
13. The internal antenna of transistor set is made of ?
Ans Ferror Chrome
14. Gerontology is the study of ?
Ans Process of ageing
15. Helium is used for respiration in deep water instead of nitrogen because
Ans It is heavier than nitrogen
16. In a fluorescent tube which of the following components are found?
Ans Mercury vapour
17. The common ore of aluminium is ?
Ans Chromite
18. When one enters a dark room, he is not able to see anything but, after sometime vision improves. This is because ?
Ans The pupil ofthe eye dilates
19. Radio carbon dating is used to find the age of ?
Ans Fossils
20. What is periscope used for ?
Ans To survey the ships on the surface of the sea when the submarine is under water
Ans Area of the sun covered by the moon
12. The instrument used to measure the specific gravity of milk is?
Ans Lactometer
13. The internal antenna of transistor set is made of ?
Ans Ferror Chrome
14. Gerontology is the study of ?
Ans Process of ageing
15. Helium is used for respiration in deep water instead of nitrogen because
Ans It is heavier than nitrogen
16. In a fluorescent tube which of the following components are found?
Ans Mercury vapour
17. The common ore of aluminium is ?
Ans Chromite
18. When one enters a dark room, he is not able to see anything but, after sometime vision improves. This is because ?
Ans The pupil ofthe eye dilates
19. Radio carbon dating is used to find the age of ?
Ans Fossils
20. What is periscope used for ?
Ans To survey the ships on the surface of the sea when the submarine is under water
21. Seismology is the science of ?
Ans Earthquakes
22. The source of solar energy is ?
Ans Nuclear energy
23. If an object is placed midway between two parallel plane mirrors facing each other, then the number of images that appear in mirrors is
Ans Infinite
24. In vacuum , What will be common among X rays visible light , radiowaves
Ans Amplitude
25. Barometer is used to measure
Ans Atmospheric pressure
26. If u use a microscope to watch smoke particles in still air, u ll see them moving about all the time. This phenomenon is called ?
Ans Brownian movement
27. The mass of a neutron is approximately
Ans Equal to the mass of proton
28. The spherical shape of rain drops is due to
Ans Atmospheric friction of air
29. Galvanometer is an instrument
Ans For measuring currents of small magnitude
30. Which of the following has highest frequency?
Ans Gamma rays
Ans Earthquakes
22. The source of solar energy is ?
Ans Nuclear energy
23. If an object is placed midway between two parallel plane mirrors facing each other, then the number of images that appear in mirrors is
Ans Infinite
24. In vacuum , What will be common among X rays visible light , radiowaves
Ans Amplitude
25. Barometer is used to measure
Ans Atmospheric pressure
26. If u use a microscope to watch smoke particles in still air, u ll see them moving about all the time. This phenomenon is called ?
Ans Brownian movement
27. The mass of a neutron is approximately
Ans Equal to the mass of proton
28. The spherical shape of rain drops is due to
Ans Atmospheric friction of air
29. Galvanometer is an instrument
Ans For measuring currents of small magnitude
30. Which of the following has highest frequency?
Ans Gamma rays
41. Most important effect of moon on earth is that
Ans Gives light
42. The term " Meteor" is applied to an interplanetary body,
Ans After it enters the earth`s atmosphere
43. Newton`s rings are
Ans Coloured rings observed around the point of contact of a convex lense
44. The heat recieved by earth from the sun is known as
Ans Solar radiation
45. Constellation is
Ans Configuration of fixed stars resembling a figure
46. Which of the following part of the atmosphere is nearest to the earth
Ans Troposphere
47. To an astronaut in space sky looks
Ans Black
48. Why does the sun looks oval when it is at the horizon ?
Ans When the sun is at the horizon rays from the longer edge are refracted more coz it passes through greater thickness of air so vertical diameter is shortened to give an oval shape
49. The moon has period of rotation which is equal to period of revolution . It is
Ans 29 days, 7 hours , 43 min , 1147 sec
50. The composition of the sun is
Ans hydrogen 90% , Helium 8% , Heavy elements 2%
Ans Gives light
42. The term " Meteor" is applied to an interplanetary body,
Ans After it enters the earth`s atmosphere
43. Newton`s rings are
Ans Coloured rings observed around the point of contact of a convex lense
44. The heat recieved by earth from the sun is known as
Ans Solar radiation
45. Constellation is
Ans Configuration of fixed stars resembling a figure
46. Which of the following part of the atmosphere is nearest to the earth
Ans Troposphere
47. To an astronaut in space sky looks
Ans Black
48. Why does the sun looks oval when it is at the horizon ?
Ans When the sun is at the horizon rays from the longer edge are refracted more coz it passes through greater thickness of air so vertical diameter is shortened to give an oval shape
49. The moon has period of rotation which is equal to period of revolution . It is
Ans 29 days, 7 hours , 43 min , 1147 sec
50. The composition of the sun is
Ans hydrogen 90% , Helium 8% , Heavy elements 2%