SCIENCE INTELLEGENCE QUESTIONS FOR 38. Low frequency means high pitch.
LOWER TOPA AND PAF SARGHODA
39. Refractive index of water is 1.333.
1. Critical angle of water is 49
2. Critical angle of glass is 42 40. Refractive index of glass is 1.5.
3. Critical angle of air is 45 41. Refractive index of air is 1.0003.
4. __ play vital role in digestion of food.
5. If I am facing towards south and walk 42. Reflection occurs when angle of incidence is greater than
6. Speed of light in air critical angle and light travels from denser to rarer
7. A solution that contains less amount of solute___ medium.
8. Atomic number of fluorine
43. Optical fibres are used in telecommunication.
9. Atomic number= no of _
10. ____ shell is closest to nucleus 44. Red colour refracts the least light while violet refracts the
11. ___ does not cause pollution A) fertilizer B) most.
sewage C) chemical D) contamination
12. Why atom is neutral 45. A simple periscope has two angles of 45° each.
13. Formula to find no of electrons in a shell: 2n²
46. When refracted angle is 90°, it is called critical angle.
14. Dispersion of light from prism is called_____
15. We can see coin from water glass by ____ 47. Colours that can be mixed and form new colours are
16. Heat travel in ______ called primary colours.
17. Sound wave is an example of _____ wave
18. Wave transfer _____ 48. Scientific name of frog is Anura / Rana Tigrina.
19. Isotope is an atom having same atomic number but 49. Chemical formula of oxygen is O₂.
different mass number.
50. Soft water gives more lather.
20. Waves in motion transfer energy.
51. Hard water gives less lather.
21. Formula of calcium nitrate is Ca(NO₃)₂.
52. Chemical formula of sodium hydroxide is NaOH.
22. Digestion is completed in small intestine.
53. Chemical formula of potassium chlorate is KClO₃.
23. Gastric juice helps in digestion of food in stomach.
54. Chemical formula of ozone is O₃.
24. Soap is made of sodium hydroxide/caustic soda/fatty
acid. 55. We see the colour that an object reflects.
25. Formula of carbon monoxide is CO. 56. Natural gas is methane (CH₄).
26. Formula of carbon dioxide is CO₂. 57. King of elements is hydrochloric acid (HCl).
27. Dry ice is formed by carbon dioxide (CO₂). 58. Primary colours are red, blue, and green.
28. Tidal breezes are maximum at full moon. 59. Transfer of heat in a room through heater is an example
29. Mercury (a planet) takes 88 days to revolve around Sun. of convection.
30. Mercury revolves around its own axis in 59 days. 60. Neutron is the heaviest subatomic particle.
31. Mirror fixed in a telescope is at 45°. 61. Thermosphere starts 90 km above the Earth’s surface.
32. Critical angle of glass is 42°. 62. DNA stands for Deoxyribonucleic Acid.
33. There are 3 ways of heat transfer: conduction, 63. Speed of light in air is 2.9 × 10⁸ m/s.
convection, radiation.
64. Air contains 78% nitrogen and 21% oxygen.
34. Isotopes have different number of neutrons.
65. Percentage of carbon dioxide in air is 0.04%.
35. We can conserve water by reducing the use, recycling
objects, and reusing them (all of these). 66. X-rays are electromagnetic waves.
36. Optical fibres work on the principle of total internal
reflection.
37. A low frequency wave takes more time.
LOWER TOPA AND PAF SARGHODA
39. Refractive index of water is 1.333.
1. Critical angle of water is 49
2. Critical angle of glass is 42 40. Refractive index of glass is 1.5.
3. Critical angle of air is 45 41. Refractive index of air is 1.0003.
4. __ play vital role in digestion of food.
5. If I am facing towards south and walk 42. Reflection occurs when angle of incidence is greater than
6. Speed of light in air critical angle and light travels from denser to rarer
7. A solution that contains less amount of solute___ medium.
8. Atomic number of fluorine
43. Optical fibres are used in telecommunication.
9. Atomic number= no of _
10. ____ shell is closest to nucleus 44. Red colour refracts the least light while violet refracts the
11. ___ does not cause pollution A) fertilizer B) most.
sewage C) chemical D) contamination
12. Why atom is neutral 45. A simple periscope has two angles of 45° each.
13. Formula to find no of electrons in a shell: 2n²
46. When refracted angle is 90°, it is called critical angle.
14. Dispersion of light from prism is called_____
15. We can see coin from water glass by ____ 47. Colours that can be mixed and form new colours are
16. Heat travel in ______ called primary colours.
17. Sound wave is an example of _____ wave
18. Wave transfer _____ 48. Scientific name of frog is Anura / Rana Tigrina.
19. Isotope is an atom having same atomic number but 49. Chemical formula of oxygen is O₂.
different mass number.
50. Soft water gives more lather.
20. Waves in motion transfer energy.
51. Hard water gives less lather.
21. Formula of calcium nitrate is Ca(NO₃)₂.
52. Chemical formula of sodium hydroxide is NaOH.
22. Digestion is completed in small intestine.
53. Chemical formula of potassium chlorate is KClO₃.
23. Gastric juice helps in digestion of food in stomach.
54. Chemical formula of ozone is O₃.
24. Soap is made of sodium hydroxide/caustic soda/fatty
acid. 55. We see the colour that an object reflects.
25. Formula of carbon monoxide is CO. 56. Natural gas is methane (CH₄).
26. Formula of carbon dioxide is CO₂. 57. King of elements is hydrochloric acid (HCl).
27. Dry ice is formed by carbon dioxide (CO₂). 58. Primary colours are red, blue, and green.
28. Tidal breezes are maximum at full moon. 59. Transfer of heat in a room through heater is an example
29. Mercury (a planet) takes 88 days to revolve around Sun. of convection.
30. Mercury revolves around its own axis in 59 days. 60. Neutron is the heaviest subatomic particle.
31. Mirror fixed in a telescope is at 45°. 61. Thermosphere starts 90 km above the Earth’s surface.
32. Critical angle of glass is 42°. 62. DNA stands for Deoxyribonucleic Acid.
33. There are 3 ways of heat transfer: conduction, 63. Speed of light in air is 2.9 × 10⁸ m/s.
convection, radiation.
64. Air contains 78% nitrogen and 21% oxygen.
34. Isotopes have different number of neutrons.
65. Percentage of carbon dioxide in air is 0.04%.
35. We can conserve water by reducing the use, recycling
objects, and reusing them (all of these). 66. X-rays are electromagnetic waves.
36. Optical fibres work on the principle of total internal
reflection.
37. A low frequency wave takes more time.
