How will you test in a simple way whether the transistor is spoiled or in working order?

A fraction is given How will you decide,by just looking at it,whether the fraction is less than 1?

A fraction is given How will you decide,by just looking at it,whether the fraction is equal to 1?

How will you show whether a given -OH group is alcoholic or phenolic ?

How would you test the presence of starch in leaves?

If you get a 4 cm piece of woody flowering plant, how will you decide anatomically whether it is root or stem? Give two reasons.

How would you set up a circuit to obtain NOT gate using a transistor?