- Silicon Dioxide
- Stannous Oxide
- Aluminium Oxide
- None
Author: Zabeehullah
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- Neon
- Spirit
- Freon/Am monia
- Methane
- North pole
- South pole
- middle of the earth
- Equator
- The hair barging against the charged comb
- Small electric sparks
- The rubbing of the comb with the hair
- None of the above
- 0.225 kg/m3
- 1.025 kg/m3
- 1.225 kg/m3
- 1.425 kg/m3
- 1 g/cm3
- 1.5 g/cm3
- 2 g/cm3
- none of these
- Reflection of light
- Refraction of light
- Diffraction of light
- Dispersion of light
- The scattering of sunlight by air molecules
- The presence of water vapor
- Absorption of blue light by the air
- Emission of blue light by the atmosphere
- 1200 – 1300 gm
- 1600 – 2000 gm
- 500 – 800 gm
- 100 – 200 gm
- Venus
- Pluto
- Jupiter
- None
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