How many pairs of letters in the word POSITIVE has the

Which of the following correctly describes the nature of electric field lines? 

What is the name of the process by which a liquid changes into gas at all temperatures?  

Which law explains the relation between pressure and volume of a gas at constant temperature?  

Which physical quantity is conserved in a collision (in the absence of external forces)?  

In an electric motor, energy is transformed from:

Which of the following is an example of a non-renewable source of energy?  

What is the speed of sound in air at room temperature (approx)?  

Which of the following is not a characteristic of simple harmonic motion (SHM)?

A capacitor filled with dielectric constant K is connected to a battery. If dielectric is removed, how much charge flows back?

Two bodies of masses m and 4m are separated by a distance d. Where will the gravitational field be zero along the line joining them?