Question : Which acid makes the atmosphere of Venus have thick white and yellowish clouds?

Option 1: Sulphuric acid

Option 2: Nitric acid

Option 3: Acetic acid

Option 4: Hydrochloric acid

Question : Supersonic jets cause thinning of which layer?

Option 1: O₂ layer

Option 2: O₃ layer

Option 3: CO₂ layer

Option 4: SO₂ layer

Question : The narrow zone of contact between the lithosphere, hydrosphere and atmosphere where natural vegetation and wildlife exist is called the:

Option 1: Geosphere

Option 2: Biosphere

Option 3: Troposphere

Option 4: Exosphere

Question : Which of the following is the outer layer of the Earth that is made of plates which fit together like a jigsaw puzzle?

Option 1: Mesosphere

Option 2: Asthenosphere

Option 3: Biosphere

Option 4: Lithosphere

Question : The wire of flashbulbs is made up of

Option 1: Magnesium

Option 2: Barium

Option 3: Copper

Option 4: Silver