Trial 3: Volume of liquid (mL)

Explanation:

When reading a scale. you should always see it from a perpendicular angle and read the lower miniscus( the base of the curve)

it is 10 mL, 9.9mL if you want this to be precise

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock