- Which lamp has the highest energy efficiency? (LED lamp)
- Yellow light is a combination of ------ primary colours? (Red,Green)
- Diverging lens produces ---- type of images?(Small virtual images)
- The process used to produce Ammonia is? (Haber process)
- The non metal which exists in liquid state at room temperature is? (Bromine)
- 2007 chemistry Nobel prize winner?(Gerhard Ertl)
- The fifth state of matter? (Bose-Einstein Condensate)
- Speed of blue colour light in vacuum?(3x10^8 m/s)
- Which fuel has the highest calorific value? (Hydrogen)
- In which direction does rainbow appear in the morning? (West)
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