Which is the correct way of reading the liquid level in a measuring cylinder

Which is the correct way to measure length using a ruler ?

While determining the density of a copper piece using a spring balance and a measuring cylinder, Seema carried out the following procedure : (i) noted the water level in the measuring cylinder without the copper piece. (ii) immersed the copper piece in the water. (iii) noted the water level in the measuring cylinder with the copper piece inside it. (iv) removed the copper piece from the water and immediately weighed it using a spring balance. The wrong step in the proceedure is :

Which is the proper way to heat a liquid in a test tube?

Choose the correct one : Volume is measured with scale/tape/measuring cylinder

Which option shows the correct net of a cylinder? a.

How do you measure density of a liquid using a graduated measuring cylinder?