1. The sky appears blue due to: Scattering of light 2. Oxygen in our blood is transported by a protein named:haemoglobin 3. The working principle of a washing machine is:Centrifugation 4. Carbon dating is used for what :To estimate the age of organic materials 5. What is the name given to the green pigment in plants:Chlorophyll 6. The science dealing with cultivation of flowers, fruits, vegetables and ornamental plants is known as:Horticulture 7. Who invented the mobile phone :Dr. Martin Cooper 8. In SONAR, we use ultrasonic waves 9. Sodium metal is kept under kerosene 10. Saponification is the process that makes what common product Soap
Posted on: Wed, 10 Jul 2013 11:25:29 +0000
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