This is layer of atmospheric gas that absorbs harmful ultraviolet rays from Sun:
- Ozone Layer
- Troposphere
- Stratosphere
- Mesosphere
Ozone Layer restricts which one of the following:
- Infrared Rays
- Ultraviolet Rays
- X-Rays
- Gamma Rays
Which gas is emitted by incomplete combustion of fuel:
- Carbon Dioxide
- Carbon Monoxide
- Nitrogen Oxide
- Sulfur Dioxide
The poisonous gas which is the main byproduct of motor vehicle with irritating smell is:
- Carbon Dioxide
- Carbon Monoxide
- Nitrogen Oxide
- Sulfur Dioxide
The animal included in the endangered species is:
- Lions
- Giant pandas
- Elephants
- Kangaroos
The step which can save the earth and natural resources:
- Burning of fossil fuels
- Cut down more trees
- Waste more water
- Use recycled and reusable material
The permanent destruction of forests to make the land available for other uses is called:
- Deforestation
- Afforestation
- Reforestation
- Desertification
Which of the following equations represents a addition reaction:
- AB → A+B
- A → AB
- A+B → AB
- AB → A+C
A single compound breaks down to form two or more simpler substances are called:
- Combination Reaction
- Decomposition Reaction
- Neutralization Reaction
- Addition Reaction
The term acid comes from the Latin word:
- Acere
- Acidos
- Acare
- Acre