21. Sunlight is composed of:
(A) 6 colours
(B) 7 colours
(C) 8 colours
(D) 9 colours
22. The rarest gas in air is:
(A) Neon
(B) Carbon Dioxide
(C) Helium
(D) Oxygen
23. Minor objects in irregular shapes orbiting the sun are called:
(A) Vessel
(B) Asteroid
(C) Meteors
(D) Comet
24. The lowest zone of atmosphere containing about seventy five per cent of total mass of atmosphere and ninety per cent of its water vapour is called:
(A) Troposphere
(B) Lonosphere
(C) Aerosphere
(D) Stratosphere
25. The theory about the beginning of the Universe by a huge explosion is called:
(A) Binary
(B) Black Hole
(C) Big Bang
(D) Steady State
26. Constellation is:
(A) Classification of stars satellites
(B) Classification of stars
(C) Patterns or groups of stars in the sky
(D) Patterns or groups of satellites in the sky
27. The sun takes years to travel around the galaxy
(A) One hundred years
(B) One millions years
(C) 225 million years
(D) 225 years
28. Days and nights are equal throughout the year at:
(A) North America
(B) South Africa
(C) Equator
(D) North Pole
29. Celestial body that affects tides of oceans is:
(A) Sun
(B) Moon
(C) Galaxy
(D) Meteorite
30. Huge cloud of gas and dust in universe is called:
(A) Constellation
(B) Satellite
(C) Meteorite
(D) Nebula
31. Outer surface of the sun is called:
(A) Chromosphere
(B) Photosphere
(C) Corona
(D) Ionosphere
32. Sun’s diameter is:
(A) 3 million Km
(B) 2.5 million Km
(C) 1.4 million Km
(D) 1 million Km
33. The largest planet is:
(A) Venus
(C) Mercury
(B) Jupiter
(D) Mars
34. The continuous movement of continents is called Continental:
(A) Shakes
(B) Drift
(C) Motion
(D) Move
35. The layer of atmosphere in which we live is called:
(A) Troposphere
(B) Photosphere
(C) Lithosphere
(D) Ionosphere
36. Study of fingerprints is called:
(A) Genetics
(B) Dactylography
(C) Haemotology
(D) Histology
37. Which rocks make the earth’s surface or crust:
(A) Sedimentary
(B) Igneous
(C) Metomorphic
(D) All of these
38. Area in a desert where there is sufficient water for plants is called:
(A) Island
(B) Oasis
(C) Green desert
(D) Greenland
39. Plate tectonics theory explains movements of:
(A) Rockets
(C) Oceans
(B) Rivers
(D) Continents
40. Silicon is also called:
(A) Stone Maker
(B) Ocean Maker
(C) Earth Maker
(D) Mountain Maker