Question : Which of the followinf is FALSE with respect to rain water harvesting ?

Option 1: It is a device of water conservation

Option 2: It helps in raising water table

Option 3: It helps in meeting rising water demands

Option 4: It increases run off losses

Question : Water is used in a hot water bag because:

Option 1: it is easily available

Option 2: it has high specific gravity

Option 3: it has high specific heat

Option 4: it is a liquid substance

Question : Select the option that expresses the given sentence in passive voice.

The sewage water smells foul.

Option 1: Foul is smelt by the sewage water.

Option 2: The sewage water is foul when it is smelt.

Option 3: The sewage water has a foul smell.

Option 4: Passive construction is not possible.

Question : Water is not effective in extinguish a fire cause by petrol because

Option 1: The flame is too hot for water to cool it down

Option 2: Water and petrol react chemically

Option 3: Water and petrol are miscible with each other

Option 4: Water and petrol are immiscible with each other and petrol which forms the upper layer  continues to burn

Question : Camel is a desert animal, that can live without water for many days, because:

Option 1: it  needs less water

Option 2: water is formed in the body due to oxidation of fat

Option 3: it has the water sac in the walls of the lumen of stomach

Option 4: All of the above