Which of the following compounds will make an electrolytic solution?
SO2
С2Н5ОН
KBr
CCI4

will make an electrolytic solution

Explanation:

Electrolyte is a substance which dissociates into ions when dissolved in water and thus is able to conduct electric current through them.

Compounds in solid form does not conduct electricity due to the absence of free ions.

a) is a covalent compound and thus not an electrolyte.

b)  is a covalent compound and thus do not dissolve in water and thus is not an electrolyte.

c)  is an ionic compound and thus dissolve in water and give ions which help to conduct electricity.

d)  is a covalent compound and thus do not dissolve in water and thus is not an electrolyte.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.