Question

Make a lactometer with ball point refill.what would you do to make the refill stand vertically straight?

Answer 1

Lactometer is an instrument which is utilized to test the milk
Guideline : Takes a look at Archimedes Rule 
TO make a lactometer with ball point refill, take after the given advances : 
1.Take a vacant ball pen refill. 
2. Refill ought to have a metal point at the base. 
3.Take a bubbling tube and fill it with water. 
4.Put the refill in the water with metallic point. 
5.To influence the refill to remain in water, embed a little eraser piece in the refill at the inside. 
6.Mark the point with marker up to which the refill is over the water. 
7. Presently, exhaust the bubbling tube with water and fill it with drain. 
8.Again put the refill in drain and stamp the point which demonstrates the part which is over the surface of drain. 
9.Further we can include , drain water blend in the bubbling tube and rehash a similar stage 8. 
10. we would now be able to look at and test whether water is added to drain or not. 
All the best for your work

Answer 2

Lactometer is an instrument which is used to test the purity of milk.

Principle : Works on Archimedes Principle

TO make a lactometer with ball point refill, follow the given steps :

1.Take an empty ball pen refill.

2. Refill should have a metal point at the bottom.

3.Take  a boiling tube and fill it with water.

4.Put the refill in the water with metallic point.

5.To make the refill stand in water, insert a small eraser piece in the refill at the centre.

6.Mark the point  with marker up to which the refill is above the water.

7. Now, empty the boiling tube with water and fill it with milk.

8.Again put the refill in milk and mark the point which shows the part which is above the surface of milk.

9.Further we can add , milk water mixture in the boiling tube and repeat the same step 8. 

10. we can now compare and test whether water is added to milk or not.

All the best for the Improvised Lactometer you are going to do.