Question : It is difficult to fix a nail on a free-suspended wooden frame. Which law supports this statement?

Option 1: Law of inertia

Option 2: Newton's second law

Option 3: Newton's third law

Option 4: Pascal's law

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 : 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 : Ports of the Baltic Sea remain open for trade even during winter because 

Option 1: It lies in the tropical belt.

Option 2: North Atlantic Drift, a warm ocean current flows in the region.

Option 3: Local winds keep it warm.

Option 4: Western disturbances cause abrupt rise in the temperature.

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