Correct option is A
Correct Answer: A (Sulphuric acid)
Explanation:
The thick white and yellowish clouds on Venus are primarily composed of droplets of sulphuric acid (H₂SO₄). These clouds are formed due to the interaction of sulfur dioxide (SO₂) and water in the planet's atmosphere, catalyzed by sunlight.
- Venus's atmosphere is composed predominantly of carbon dioxide (96.5%), with traces of nitrogen and sulfur dioxide.
- The sulfuric acid clouds are highly reflective and contribute to Venus's high albedo (brightness).
- These clouds are so dense and thick that they completely cover the planet, preventing direct observation of its surface from space.
- Sulphuric acid clouds are responsible for Venus's extreme greenhouse effect, which causes surface temperatures to reach about 475°C (900°F).
Information Booster:
- Venus's atmosphere is 90 times denser than Earth's atmosphere.
- The sulphuric acid clouds contribute to a runaway greenhouse effect, trapping immense heat.
- Sulfuric acid droplets in the clouds reflect sunlight, giving Venus its bright appearance in the night sky.
- Venus experiences acid rain, but the droplets evaporate before reaching the surface due to extreme heat.
- Despite its inhospitable conditions, Venus is considered a "sister planet" to Earth due to its similar size and mass.