Who proved that blends of polyblend (plastic waste) and bitumen, when used to lay roads, enhanced the bitumen's water repellant properties and helped to increase road life? 

• Amrita Devi

• Ramdeo Misra

• W.H. Pearsall

• Ramesh Chandra Dagan

• Ramesh Chandra Dagan

The figure below is the diagrammatic representation relative contribution of various greenhouse gases to total global warming. What do (a), (b), (c) and (d) represent respectively?

• A - Carbon dioxide; B - Methane; C - CFCs; D - N₂O

• A - Carbon dioxide; B - CFClC; C - Methane; D - N₂O

• A - Carbon dioxide; B - N₂O ; C - CFClC; D - Methane

• A - Carbon dioxide; B - Methane; C - N₂O ; D - CFCs

• A - Carbon dioxide; B - Methane; C - N₂O ; D - CFCs

The Montreal Protocol (1987) refers to

• Presistent organic pollutants

• Global warming and climatic changes

• Biosafety of genetically modified organisms

• Controlling the emission of ozone depleting substances

• Controlling the emission of ozone depleting substances

Which of the following pairs of gases is mainly responsible for green house effect?

• Oxygen and nitrogen

• Nitrogen and Sulphur dioxide

• Carbon dioxide and Methane

• Ozone and Ammonia

Which of the following protocols did aim for reducing emission of chlorofluorocarbons into the atmosphere?

• Kyoto Protocol

• Gothenburg Protocol

• Geneva Protocol

• Montreal Protocol