Fresh water flows freely on some areas of the earth crust is called as ________________ .
Pond
Lake
Artesian well
Streams
The energy derived directly from the sun is called as
Thermal energy
Solar energy
Hot energy
Electric energy
Stagnant water is seen in
Ponds
Lakes
Both
Sea
Which is an example for Non - renewable source ?
Hydrogen
Wind
Coal
Which one is an exmaple for liquid biofuel ?
Bio alcohol
Bio ethers
Bio diesel
All of above
Which type of water is used for flushing toilets after recycling ?
Black water
Grey water
River water
Water from pond
Name the equipment used to evaluate the energy efficiency of house?
Thermometer
Generator
Blower doors and infra red cameras
Solar heater
Name the liquid bio fuel made from vegetable oil and animal fat ?
Bioethanol
Biodiesel
Biogas
Green diesel
_______ are absent in areas with water scarcity.
Tall trees
Bushy plants
Herbs
Shrubs
Which is called as the largest water resource ?
River
Ocean